Compare commits

...
128 Commits
Author SHA1 Message Date
James R. Barlow fbaad570c7 v16.4.2 release notes 2024-07-22 15:02:53 -07:00
James R. Barlow f974e3b3c1 ghostscript: change input filename order for 10.03.1
Ghostscript now expects the pdfa.ps file to precede other files. Fixes #1359.
2024-07-22 14:56:03 -07:00
James R. Barlow 46b49cc176 Suppress missing jbig2dec warning message
Windows users can't resolve it easily.
2024-07-22 14:54:40 -07:00
Johannes KalliauerandGitHub 5256e74d0c Update installation.rst "python -m venv .venv" (#1355) 2024-07-18 06:28:07 -07:00
James R. Barlow 621d6a0b89 Fix image size calculation when SMask dimensions do not match image
Closes [Bug]: Ghostscript rasterizing failed #1351
2024-07-16 13:36:48 -07:00
IrisandGitHub 08be7c8bbe update arch base-devel install command (#1354)
the '--needed' flag only installs the package if it isn't installed, otherwise it would reinstall it if already installed.
2024-07-15 13:28:36 -07:00
James R. Barlow 980a5472b6 Fix test failures due to 4dde378 2024-07-09 15:54:53 -07:00
James R. Barlow 51c618e357 Merge branch 'main' of github.com:ocrmypdf/OCRmyPDF 2024-07-09 14:46:58 -07:00
James R. Barlow 4dde3786c2 Fix KeyError '/Subtype'
Fixes #1350
2024-07-09 14:46:47 -07:00
James Barlow d544342602 Merge branch 'main' of https://github.com/ocrmypdf/OCRmyPDF 2024-07-04 22:59:33 -07:00
James R. Barlow fac91fca2a v16.4.1 release notes 2024-06-30 00:11:27 -07:00
James R. Barlow 6edf756849 optimize: trap Hifi..Error
Fixes [Bug]: NotImplementedError: not sure how to get colorspace #1315
2024-06-30 00:08:51 -07:00
James R. Barlow 4fb1bb4de6 pipeline: fix typo in message 2024-06-30 00:08:31 -07:00
James Barlow 6a8eb7daaa docs: page seg mode 2024-06-26 01:16:31 -07:00
James R. Barlow 0544d06c3d Fix calculation of image printed area (used in finding weighted DPI for OCR)
Fixes #1334
2024-06-21 15:13:51 -07:00
James R. Barlow 34c285c9ac v16.4.0 release notes (3) 2024-06-17 14:40:22 -07:00
James R. Barlow 2f53b27651 Disable progbar for linearizing when --no-progress-bar set
Fixes #1332
2024-06-14 14:18:33 -07:00
James R. Barlow 772677746b Update issue templates to improve data collection for 3rd party apps 2024-06-13 15:25:50 -07:00
James R. Barlow f0bad87ea6 Restore choco since winget isn't supported (still) 2024-06-13 00:40:05 -07:00
James R. Barlow 44e71f8c14 Attempt to deal with jbig2dec warnings 2024-06-13 00:27:33 -07:00
James R. Barlow 964b30ca26 v16.4.0 release notes (2) 2024-06-11 16:55:33 -07:00
James R. Barlow 214a333e2d Block Tesseract 5.4.0 2024-06-11 14:44:54 -07:00
James R. Barlow ec6401ab57 Merge branch 'pr/helkaluin/1300' 2024-06-09 15:34:19 -07:00
James R. Barlow cbc5e8ce8d Revert "Delete and de-list snap because it no longer works"
This reverts commit 3a721e6578.
2024-06-09 15:32:34 -07:00
James R. Barlow a1c4cfe8f1 Merge branch 'main' of github.com:ocrmypdf/OCRmyPDF 2024-06-08 01:37:19 -07:00
James R. Barlow 3a721e6578 Delete and de-list snap because it no longer works 2024-06-08 01:24:47 -07:00
Omid RahaandGitHub e6b716cdde Update docker.rst (#1327) 2024-06-08 01:20:51 -07:00
James R. Barlow 02c39998b8 Note that alpine is now available for arm 2024-06-08 01:20:25 -07:00
James R. Barlow 0774bc7f14 v16.4.0 release notes 2024-06-01 02:01:11 -07:00
James R. Barlow c6a98b3d0b Merge branch 'feature/alpine-arm' 2024-06-01 01:55:26 -07:00
James R. Barlow 981bbf1105 optimize: add a recursion guard to avoid chasing cyclic form xobjects 2024-06-01 01:52:21 -07:00
James R. Barlow 2b0c6cfd40 v16.4.0 release ntoes 2024-06-01 00:26:07 -07:00
James R. Barlow 59f6bc8306 More Tesseract-specific language checks to its plugin 2024-06-01 00:15:50 -07:00
James R. Barlow 653c4ffb45 hocr: accept multiple spaces in bounding boxes
Fixes #1322
2024-05-31 16:22:27 -07:00
James R. Barlow d947ca258e Prevent issuing equ and osd as languages 2024-05-25 01:17:57 -07:00
James R. Barlow d5ff7f7db9 batch: fix issues flagged by ruff 2024-05-21 01:52:57 -07:00
James R. Barlow 579cef3649 watcher: Ensure output files are .pdf 2024-05-21 01:51:30 -07:00
James R. Barlow cb2f090c60 v16.3.1 release notes 2024-05-21 01:39:30 -07:00
James R. Barlow f3d6387bca Fix "OCR" progress bar not matching actual progress 2024-05-21 01:35:14 -07:00
James R. Barlow abf9729c61 Semfree test: accept pdfa conversion failed as a valid return code
Fixes #1316
2024-05-21 01:26:11 -07:00
James R. Barlow 442e9c9f0d Add missing codecov token where missed & drop unneeded brew openssl 2024-05-19 01:07:38 -07:00
James R. Barlow 397fad249d v16.3.0 release notes 2024-05-19 00:50:59 -07:00
James R. Barlow 9a3c5a3f7c Add progressbar for metadata_fixup
Might take time for big files. Pdf.open() potentially is expensive as well, but QPDF doesn't give us progress feedback for that.

Closes Show progress during postprocessing #1313
2024-05-19 00:46:50 -07:00
James R. Barlow 950c700274 Fix Ghostscript PDF/A progressbar not displaying 2024-05-19 00:44:21 -07:00
James R. Barlow 26432c38a9 Raise exception if rotate pages threshold adjusted without --rotate-pages
Fixes Make usage of --rotate-pages-threshold clearer #1309
2024-05-18 23:49:27 -07:00
James R. Barlow 28be50136c hocr: If a line box's coords are invalid, log and error and don't render
Addresses [Bug]: Crash on multiple .pdf files #1312

Not actually a fix, but at least it will get us better diagnostics. Appears old Tesseract 4.x generates bad line boxes at times.
2024-05-18 23:32:18 -07:00
James R. Barlow 0c62f2de5d Issue template: check for EOL OS 2024-05-17 19:51:15 -07:00
James R. Barlow 5caf654f22 Add new codecov token 2024-05-11 01:03:41 -07:00
James R. Barlow 205593445e Change test to run on macos x64 and arm64 2024-05-11 00:13:08 -07:00
James R. Barlow f25fb8c63a Merge branch 'main' of github.com:ocrmypdf/OCRmyPDF 2024-05-08 00:39:27 -07:00
James R. Barlow 99c78650b6 Add better error message for PDFs with invalid CTMs
Closes #1303
2024-05-07 14:00:30 -07:00
helkaluin 69355886a8 Fix wrong env var for GS path in Snap 2024-04-26 16:45:04 +08:00
Ahmed AbdouandGitHub 08e89e2dbe Adding language install docs for archlinux (#1296)
Adding language install docs for archlinux
2024-04-24 14:46:05 -07:00
James R. Barlow 0e013df161 v16.2.0 release notes 2024-04-16 00:37:03 -07:00
James R. Barlow 9ba4e3ab46 Log unusual exceptions when trying to obtain a version
Fixes #1262
2024-04-07 14:39:08 -07:00
James R. Barlow 5fdcb7602b Make downsampling large images that Tesseract would otherwise error on into default behavior
Fixes #1281
2024-04-07 13:43:20 -07:00
James R. Barlow b4db1b741f optimize: fix handling of [/FlateDecode none] - type images
Closes #1271
2024-04-07 01:44:08 -07:00
James R. Barlow 7a8cc21e31 Add support for sidecar output to io.BytesIO
Closes #1252
2024-04-07 01:38:55 -07:00
James R. Barlow 0674829d8f Remove tool.black config 2024-04-07 00:36:52 -07:00
James R. Barlow 315aa0474b Merge branch 'main' of github.com:ocrmypdf/OCRmyPDF 2024-04-07 00:34:51 -07:00
Ben BeasleyandGitHub df3451e779 Update the typer[all] dependency to typer-slim[standard] (#1287)
In 0.12.1, Typer was significantly reorganized.

- `typer-slim` is the library (for `import typer`)
- `typer-slim[standard]` adds optional dependencies (currently `rich`
  and `shellingham`, basically equivalent to the old `typer[all]`)
- `typer-cli` is the `typer` command-line tool
- `typer` is now basically a metapackage that brings in *all of the
  above*, and it no longer has an `all` extra

Pip will warn about this and proceed,

```
WARNING: typer 0.12.1 does not provide the extra 'all'
```

but there are other tools that will fail hard when asked to resolve a
(now) nonexistent extra.

Since this project doesn’t need the `typer` command-line tool, it looks
like changing the dependency to `typer-slim[standard]` is the best way
forward.

See https://typer.tiangolo.com/release-notes/#0121 and
tiangolo/typer#785 for further discussion
and details.
2024-04-07 00:34:34 -07:00
akierigandGitHub 3ba42802d1 added Macports install information (#1286) 2024-04-07 00:33:57 -07:00
James R. Barlow d6342cb8c2 Add heif/heic input image support 2024-04-07 00:33:13 -07:00
James R. Barlow 065bddbc6c Reformat with ruff format 2024-04-07 00:25:32 -07:00
James R. Barlow 067f429dde Merge branch 'main' of github.com:ocrmypdf/OCRmyPDF 2024-03-26 15:34:00 -07:00
Daniel LovegroveandGitHub 6895c2d70f Fix Broken Documentation Links (#1275)
* Update URL for PDFMARK documentation

For reference, here is a link to the old PDF:
https://web.archive.org/web/20190806035303/https://www.adobe.com/content/dam/acom/en/devnet/acrobat/pdfs/pdfmark_reference.pdf

It appears Adobe converted the PDF into a webpage-based document, the
wording seems to almost identical b/w the PDF and the website.

* Fix cross-references to JBIG2 page

* Fix links for Fedora + Arch + HEAD revision install

Fedora 39 has been released, and the package tracker no longer includes
a release overview for Fedora 37 hence why it was removed here.
2024-03-22 14:38:52 -07:00
James R. Barlow 686481982a Fix naming of hOCR rendered files 2024-03-22 13:27:20 -07:00
James R. Barlow a9e1d19b78 v16.1.2 release notes 2024-03-20 12:56:13 -07:00
James R. Barlow f95aa63718 Merge branch 'main' of github.com:ocrmypdf/OCRmyPDF 2024-03-20 12:26:02 -07:00
James Barlow 855de287b2 Fix test suite failure with Ghostscript >= 10.3
Ghostscript is more picky about a specific case with SMask that cannot be converted to PDF/A

Details here
https://github.com/ArtifexSoftware/ghostpdl/commit/4dcfae36bb4dcbc4ef3b5e5afc98bcde0d6b9ddc
2024-03-19 17:20:33 -07:00
NilsRoandGitHub feeb9f213f batch example: added archive, small corrections and optimizations (#1277)
* Added archive, small corrections

Added a function to archive originals and avoid calling ocrmypdf if they are still is PDF/A.

* Added Copyright
2024-03-18 13:22:24 -07:00
Emiel MolenaarandGitHub e7eb8fa805 Update Dockerfile.alpine (#1268)
Use Alpine 3.19 as base image to ensure we get GhostScript 10.2.1 to eliminate serious regressions that corrupt PDFs with existing text.
2024-03-13 14:49:42 -07:00
James R. Barlow 8a747f005a pixels -> megapixels
Fixes #1265
2024-02-29 15:31:07 -08:00
James R. Barlow 16ab4a8b4e Fix error message about missing Python exec
Message is
unable to start container process: exec: "python": executable file not found in $PATH: unknown.

Closes #1260
2024-02-21 23:54:41 -08:00
James R. Barlow 8d30cff4ef Undo future annotations from watcher.py till Typer fixes its issue
Fixes #1258
2024-02-20 19:14:39 -08:00
James R. Barlow 59d5b0d1bd v16.1.1 release notes 2024-02-15 16:56:25 -08:00
James R. Barlow 9ec0745ab8 Try pypy3.10 2024-02-14 14:25:13 -08:00
James R. Barlow 3a3635f7f9 Python 3.10 cleanup, manual fixes 2024-02-14 12:48:17 -08:00
James R. Barlow 6a746a1cbb ruff linting/Python 3.10 cleanup 2024-02-14 12:41:51 -08:00
James R. Barlow 906c130f96 Update rust toml settings 2024-02-14 12:32:26 -08:00
James R. Barlow 4a78458821 v16.1.0 release notes 2024-02-12 01:46:21 -08:00
James R. Barlow fddf3ce2f4 Clarify warnings filter 2024-02-12 01:43:47 -08:00
James R. Barlow 353b34e695 Merge branch 'feature/pageboxes' 2024-02-12 01:41:56 -08:00
James R. Barlow 7d63355c3c Use hocr renderer for LTR languages 2024-02-12 01:41:41 -08:00
James R. Barlow 42ff7fc842 Fix handling of pages that are restored to correct orientation with /Rotate
Appears inversion of CTM was incorrect, introduced in commit 9898904
2024-02-12 01:32:26 -08:00
James R. Barlow 26470fe16a Suppress reportlab deprecation warning 2024-02-12 01:17:08 -08:00
James R. Barlow 3b9d4b7f0a Attempt to deal with oddball mediaboxes 2024-02-11 15:34:54 -08:00
James R. Barlow 11f53fe9a9 First cut at propagating page boxes
This would fix the immediate issue, but does not address an offset mediabox.
2024-02-11 15:34:54 -08:00
James R. Barlow 123c0c766f Mention pipx, install --user --upgrade
Closes #1249
2024-02-08 09:42:00 -08:00
James R. Barlow 6a9be2142e Advise Homebrew on Linux for Ubuntu 20.04 2024-02-07 19:52:50 -08:00
James R. Barlow 0bc350f55e Merge branch 'main' of github.com:ocrmypdf/OCRmyPDF 2024-02-06 01:28:10 -08:00
dependabot[bot]GitHubdependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
7a6edf62ba Bump codecov/codecov-action from 3 to 4 (#1247)
Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 3 to 4.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](https://github.com/codecov/codecov-action/compare/v3...v4)

---
updated-dependencies:
- dependency-name: codecov/codecov-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2024-02-05 03:55:13 -08:00
James R. Barlow 07b6f06f11 optimize: log images with unclear decode tables 2024-02-01 15:42:40 -08:00
nisbet-hubbardandGitHub 2005f622bb Update gs dependency & instructions for RHEL (#1228)
* Update gs depedency to 9.54

* Add instructions for RHEL

* Update instruction for using python3.11 on RHEL
2024-01-24 10:07:58 -08:00
James R. Barlow cca04fd799 Document ability to remove all OCR 2024-01-23 23:35:43 -08:00
MaxiandGitHub 75bf8e4ba2 Add autotools automake libtool and leptonica requirements (#1230)
These tools are required for a successful install of JBIG2 on Ubuntu
2024-01-09 11:58:17 -08:00
Anish SapkotaandGitHub daabb5b100 Minor english correction in Docs (#1229) 2024-01-08 10:18:26 -08:00
James R. Barlow 035ebea72f Change Windows build to use older Ghostscript 2024-01-07 01:56:38 -08:00
James R. Barlow a499956462 v16.0.4 release notes 2024-01-07 01:39:06 -08:00
James R. Barlow 74d2a156c4 Update cache 2024-01-07 01:35:05 -08:00
James R. Barlow f87fc7b12d gs: check for text-corrupting versions 2024-01-07 01:33:49 -08:00
James R. Barlow 602f5632cb hocr: fix unbound local 2024-01-07 01:33:36 -08:00
James R. Barlow 9fbbcf7599 Merge branch 'feature/hocrdebug' 2024-01-07 01:22:54 -08:00
James R. Barlow 9498f01f59 hocr: Pass text direction for standalone words 2024-01-06 16:21:21 -08:00
James R. Barlow 2c59aca5a1 Fix render_mode ON_TOP when previous content stream does not restore CTM 2024-01-06 16:20:55 -08:00
James R. Barlow 51301d69c9 Change default graft render mode back to underneath
It was mistakenly changed to on top at some point
2024-01-06 16:20:30 -08:00
James R. Barlow 7e608fd1df Use Courier as debug font 2024-01-06 14:24:25 -08:00
James R. Barlow ecc79315df Adjust issue template files description 2024-01-04 00:27:06 -08:00
James R. Barlow 14365d10b8 Skip testing oom killer on Python 3.12
Need to investigate further if there's a safe way to do this test.
2024-01-02 16:28:22 -08:00
James R. Barlow 5e5320020f v16.0.3 release notes 2024-01-02 02:49:54 -08:00
James R. Barlow 103c3e0cd6 Drop Ghostscript CVE warning and adjust version down to 9.54
Most distros have probably now backported the CVE fix. Dropped version to 9.54 so RHEL 9 can use recent ocrmypdf.
2024-01-01 13:02:57 -08:00
Anthony NabilandGitHub 7a1c89edd9 fixed a spelling mistake (#1222) 2023-12-30 15:53:22 -08:00
James R. Barlow a5ff3d2f42 Update instructions about custom language packages
Closes #1218
2023-12-27 16:46:10 -08:00
James R. Barlow b71d16dd96 Draw RTL text with reversed matrix instead of reversing characters 2023-12-24 01:34:03 -08:00
James R. Barlow fd593eb5e9 Reversing character order for RTL helps output 2023-12-24 01:24:44 -08:00
James R. Barlow a0b98abb94 Improve and externalize debug rendering settings 2023-12-24 00:10:09 -08:00
James R. Barlow 18353e1e94 Also fix space rendering 2023-12-24 00:09:47 -08:00
James R. Barlow 9adcad84da Overhaul debug rendering to support possible use of Helvetica for testing 2023-12-23 23:47:35 -08:00
James R. Barlow f2714586d8 Fix upside down glyphless font 2023-12-23 23:44:37 -08:00
James R. Barlow 0b6fb62967 Update issue template 2023-12-23 16:21:17 -08:00
James R. Barlow 1db8b0b943 Temporarily revert default renderer to sandwich while investigating regressions in macOS Preview 2023-12-23 16:19:44 -08:00
James R. Barlow f38aebb3d5 Update issue template 2023-12-23 15:46:43 -08:00
James R. Barlow 7162c36d37 Name artifacts explicitly 2023-12-20 13:53:31 -08:00
James R. Barlow f4d4ea46c8 Update artifact actions 2023-12-20 12:44:43 -08:00
James R. Barlow 2fd1a0f178 v16.0.1 release notes 2023-12-20 12:33:41 -08:00
James R. Barlow 73ed33a086 Tighten dependencies 2023-12-20 12:33:18 -08:00
James R. Barlow e6095a9949 Fix text rendering issue with new hOCR text renderer 2023-12-20 12:26:06 -08:00
James R. Barlow 16f05af401 Fix release notes - drop rc from version 2023-12-18 20:08:45 -08:00
116 changed files with 1392 additions and 396 deletions
+1
View File
@@ -64,6 +64,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
img2pdf \
libsm6 libxext6 libxrender-dev \
pngquant \
python-is-python3 \
tesseract-ocr \
tesseract-ocr-chi-sim \
tesseract-ocr-deu \
+1 -1
View File
@@ -1,7 +1,7 @@
# SPDX-FileCopyrightText: 2023 James R. Barlow
# SPDX-License-Identifier: MPL-2.0
FROM alpine:3.18 as base
FROM alpine:3.19.1 as base
ENV LANG=C.UTF-8
ENV TZ=UTC
@@ -1,7 +1,7 @@
name: General issues
name: Installation, packaging, dependencies
description: Installation, packages, dependencies, "nothing works", test suite failures...
title: "[Bug]: "
labels: ["bug", "triage"]
labels: ["triage"]
assignees:
- jbarlow83
body:
@@ -9,6 +9,10 @@ body:
attributes:
value: |
Thanks for taking the time to fill out this bug report!
If your issue involves using OCRmyPDF on specific file(s) and not getting
good results, this is the *wrong* issue template. Please use the recommended
template to ensure we have enough information to help.
- type: textarea
id: what-happened
attributes:
@@ -20,7 +24,7 @@ body:
- type: dropdown
id: packaging-system
attributes:
label: Where are you installing from?
label: Where are you installing/running from?
multiple: true
options:
- PyPI (pip, poetry, pipx, etc.)
@@ -33,6 +37,11 @@ body:
- source build
validations:
required: true
- type: input
id: version
attributes:
label: OCRmyPDF version
description: Paste "ocrmypdf --version" here
- type: dropdown
id: operating-system
attributes:
@@ -43,6 +52,18 @@ body:
- Windows
- macOS
- BSD
- type: input
id: os_version
attributes:
label: Operating system details and version
- type: checkboxes
attributes:
label: Simple sanity checks
description: Select all that apply
options:
- label: Operating system is currently supported by its vendor (not end of life)
- label: Python version is compatible with OCRmyPDF
- label: This issue is not about a specific input file
- type: textarea
id: logs
attributes:
@@ -1,7 +1,7 @@
name: Problem with specific file
description: Something went wrong while trying to OCR a specific file
title: "[Bug]: "
labels: ["bug", "triage"]
labels: ["triage"]
assignees:
- jbarlow83
body:
@@ -21,7 +21,7 @@ body:
id: reproduce
attributes:
label: Steps to reproduce
description: Please include steps to reproduce
description: Please include steps to reproduce.
value: |
1. Run ocrmypdf -v1 ...arguments... input.pdf output.pdf
2. Open output.pdf
@@ -31,8 +31,21 @@ body:
id: files
attributes:
label: Files
description: Please attach the input and output files, or any screenshots that may be helpful.
placeholder: Drag and drop files here
description: |
Please attach the input and output files, or any screenshots that may be helpful.
If you cannot provide a test file, we probably won't be able to help with the issue.
PDF is a complex file format, and there may be technical details in the PDF that are
causing the issue. There's really no substitute for a test file.
We understand files may contain personal or sensitive information. Here are some options:
- Try reproducing the issue with a file from the OCRmyPDF test suite. (See tests/resources)
- Try to create another file in the same way as your private file.
- Encrypt the file to OCRmyPDF's private GPG key, and then zip the GPG file.
- Use ``qpdf --json yourfile.pdf`` to produce a JSON representation of your file that
omits personal information.
placeholder: |
Drag and drop files here.
- type: dropdown
id: packaging-system
attributes:
+83
View File
@@ -0,0 +1,83 @@
name: Problem with third party app that uses OCRmyPDF
description: |
For PDF generation issues with third party software such as Paperless-ngx that
uses OCRmyPDF to perform OCR or generate PDFs.
title: "[3rdparty]: "
labels: ["triage"]
assignees:
- jbarlow83
body:
- type: markdown
attributes:
value: |
Thanks for taking the time to describe this issue with a particular file
and third party app.
If you are comfortable using OCRmyPDF, please trying to install OCRmyPDF,
run it on your file, and see if it works. It's easier for everyone
if you can confirm that the issue occurs with OCRmyPDF and not with
the third party app.
- type: checkboxes
attributes:
label: Simple sanity checks
description: Select all that apply
options:
- label: This is an issue with an app that uses OCRmyPDF for OCR
- label: I am using a recent version of the third party app
- label: I will include a file that reproduces the issuse
- type: input
id: thirdparty-app-name-version
attributes:
label: Third party app name and version
description: e.g. Paperless-ngx 2.9.0
- type: textarea
id: what-happened
attributes:
label: Describe the bug
description: A clear and concise description of what the bug is.
placeholder: Tell us what you see!
validations:
required: true
- type: textarea
id: reproduce
attributes:
label: Steps to reproduce
description: Please include steps to reproduce.
value: |
1. Import attached file into Paperless-ngx
2. Trigger OCR
3. Check log file
4. ...
render: plain text
- type: textarea
id: files
attributes:
label: Files
description: |
Please attach the input and output files, or any screenshots that may be helpful.
If you cannot provide a test file, we probably won't be able to help with the issue.
PDF is a complex file format, and there may be technical details in the PDF that are
causing the issue. There's really no substitute for a test file.
We understand files may contain personal or sensitive information. Here are some options:
- Try reproducing the issue with a file from the test suite. (See tests/resources)
- Try to create another file in the same way as your private file.
- Encrypt the file to OCRmyPDF's private GPG key, and then zip the GPG file.
- Use ``qpdf --json yourfile.pdf`` to produce a JSON representation of your file that
omits personal information.
placeholder: |
Drag and drop files here.
- type: input
id: version
attributes:
label: OCRmyPDF version
description: Paste "ocrmypdf --version" here
placeholder: ocrmypdf --version
- type: textarea
id: logs
attributes:
label: Relevant log output
description: Please copy and paste any relevant log output. This will be automatically formatted into code, so no need for backticks.
placeholder: Run OCRmyPDF with verbosity `-v1` to get more detailed logging output.
render: plain text
+20 -15
View File
@@ -32,8 +32,8 @@ jobs:
- os: ubuntu-latest
python: "3.12"
tesseract5: true
# - os: ubuntu-latest
# python: "pypy3.10"
- os: ubuntu-latest
python: "pypy3.10"
env:
OS: ${{ matrix.os }}
@@ -61,6 +61,7 @@ jobs:
sudo apt-get install -y --no-install-recommends \
curl \
ghostscript \
jbig2dec \
img2pdf \
libexempi8 \
libffi-dev \
@@ -100,17 +101,20 @@ jobs:
python -m pytest --cov-report xml --cov=ocrmypdf --cov=tests/ -n0 tests/
- name: Upload coverage to Codecov
uses: codecov/codecov-action@v3
uses: codecov/codecov-action@v4
env:
CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
with:
files: ./coverage.xml
env_vars: OS,PYTHON
test_macos:
name: Test macOS
runs-on: ${{ matrix.os }}
strategy:
matrix:
os: [macos-latest]
os: [macos-latest, macos-13] # macos-latest is arm64, macos-13 is x86_64
python: ["3.10", "3.11", "3.12"]
env:
@@ -131,7 +135,6 @@ jobs:
ghostscript \
jbig2enc \
openjpeg \
openssl \
pngquant \
tesseract
@@ -158,7 +161,9 @@ jobs:
python -m pytest --cov-report xml --cov=ocrmypdf --cov=tests/ -n0 tests/
- name: Upload coverage to Codecov
uses: codecov/codecov-action@v3
uses: codecov/codecov-action@v4
env:
CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
with:
files: ./coverage.xml
env_vars: OS,PYTHON
@@ -189,7 +194,7 @@ jobs:
- name: Install system packages
run: |
choco install --yes --no-progress --pre tesseract
choco install --yes --no-progress --ignore-checksums ghostscript
choco install --yes --no-progress --ignore-checksums ghostscript --version 9.56.1
- name: Install Python packages
run: |
@@ -201,7 +206,9 @@ jobs:
python -m pytest --cov-report xml --cov=ocrmypdf --cov=tests/ -n0 tests/
- name: Upload coverage to Codecov
uses: codecov/codecov-action@v3
uses: codecov/codecov-action@v4
env:
CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
with:
files: ./coverage.xml
env_vars: OS,PYTHON
@@ -225,8 +232,9 @@ jobs:
python -m pip install --upgrade pip wheel build
python -m build --sdist --wheel
- uses: actions/upload-artifact@v3
- uses: actions/upload-artifact@v4
with:
name: artifact
path: |
./dist/*.whl
./dist/*.tar.gz
@@ -240,7 +248,7 @@ jobs:
id-token: write # mandatory for PyPI publishing
if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags/v')
steps:
- uses: actions/download-artifact@v3
- uses: actions/download-artifact@v4
with:
name: artifact
path: dist
@@ -257,7 +265,7 @@ jobs:
# Required to create a release
contents: write
steps:
- uses: actions/download-artifact@v3
- uses: actions/download-artifact@v4
with:
name: artifact
path: dist
@@ -351,9 +359,6 @@ jobs:
username: jbarlow83
password: ${{ secrets.DOCKERHUB_TOKEN }}
- name: Set up QEMU
uses: docker/setup-qemu-action@v3
- name: Set up Docker Buildx
id: buildx
uses: docker/setup-buildx-action@v3
@@ -365,6 +370,6 @@ jobs:
run: |
docker buildx build \
--push \
--platform linux/amd64 \
--platform linux/amd64,linux/arm64 \
--tag "${DOCKER_REPOSITORY}/${DOCKER_IMAGE_NAME}:${DOCKER_IMAGE_TAG}" \
--file .docker/Dockerfile.alpine .
+1
View File
@@ -70,6 +70,7 @@ Linux, Windows, macOS and FreeBSD are supported. Docker images are also availabl
| Windows Subsystem for Linux | ``apt install ocrmypdf`` |
| Fedora | ``dnf install ocrmypdf`` |
| macOS (Homebrew) | ``brew install ocrmypdf`` |
| macOS (MacPorts) | ``port install ocrmypdf`` |
| macOS (nix) | ``nix-env -i ocrmypdf`` |
| LinuxBrew | ``brew install ocrmypdf`` |
| FreeBSD | ``pkg install py-ocrmypdf`` |
+60 -6
View File
@@ -118,15 +118,16 @@ OCR for huge images
-------------------
Tesseract has internal limits on the size
of images it will process. If you issue
``--tesseract-downsample-large-images``, OCRmyPDF will downsample images
to fit Tesseract limits. (The limits are usually entered only for scanned
images of oversized media, such as large maps or blueprints exceeding
110 cm or 43 inches in either dimension, and at high DPI.)
of images it will process. By default,
``--tesseract-downsample-large-images`` is enabled, and OCRmyPDF will
downsample images to fit Tesseract limits. (The limits are usually encountered
only for scanned images of oversized media, such as large maps or blueprints exceeding
110 cm or 43 inches in either dimension, and at high DPI.) This feature can disabled
using ``--no-tesseract-downsample-large-images``.
``--tesseract-downsample-above Npixels`` adjusts the threshold at which images
will be downsampled. By default, only images that exceed any of Tesseract's
internal limits are downsampled.
internal limits are downsampled (32767 pixels on either dimension).
You will also need to set ``--tesseract-timeout`` high enough to allow
for processing.
@@ -227,6 +228,59 @@ then run ocrmypdf as follows (along with any other desired arguments):
Some combinations of control parameters will break Tesseract or break
assumptions that OCRmyPDF makes about Tesseract's output.
Changing page segmentation mode
-------------------------------
The directive ``--tesseract-pagesegmode Nmode`` forwards the desired page segmentation
mode to Tesseract OCR. The default is 3.
Page segmentation can improve OCR results when you know that a PDF ought to be
analyzed a particular way, such as PDFs whose pages contain only a single line of
text. For the vast majority of users, changing the page segmentation mode will only
make things worse.
As of June 2024, the Tesseract page segmentation modes are:
+-----+----------------------------------------------------------------------------------+
| ID | Description |
+=====+==================================================================================+
| 0 | Orientation and script detection (OSD) only. |
+-----+----------------------------------------------------------------------------------+
| 1 | Automatic page segmentation with OSD. |
+-----+----------------------------------------------------------------------------------+
| 2 | Automatic page segmentation, but no OSD, or OCR. (not implemented) |
+-----+----------------------------------------------------------------------------------+
| 3 | Fully automatic page segmentation, but no OSD. (Default) |
+-----+----------------------------------------------------------------------------------+
| 4 | Assume a single column of text of variable sizes. |
+-----+----------------------------------------------------------------------------------+
| 5 | Assume a single uniform block of vertically aligned text. |
+-----+----------------------------------------------------------------------------------+
| 6 | Assume a single uniform block of text. |
+-----+----------------------------------------------------------------------------------+
| 7 | Treat the image as a single text line. |
+-----+----------------------------------------------------------------------------------+
| 8 | Treat the image as a single word. |
+-----+----------------------------------------------------------------------------------+
| 9 | Treat the image as a single word in a circle. |
+-----+----------------------------------------------------------------------------------+
| 10 | Treat the image as a single character. |
+-----+----------------------------------------------------------------------------------+
| 11 | Sparse text. Find as much text as possible in no particular order. |
+-----+----------------------------------------------------------------------------------+
| 12 | Sparse text with OSD. |
+-----+----------------------------------------------------------------------------------+
| 13 | Raw line. Treat the image as a single text line, bypassing hacks that are |
| | Tesseract-specific. |
+-----+----------------------------------------------------------------------------------+
Modes 0, 1, 2, and 12 (all of those that enable orientation and script detection)
are not compatible with OCRmyPDF, which performs OSD in a separate step from OCR.
Their use may interfere with ``--rotate-pages`` and other features.
It is currently not possible to use advanced Tesseract OCR features, such as creating
OCR information, when using Tesseract through OCRmyPDF.
Changing the PDF renderer
=========================
+3 -1
View File
@@ -112,7 +112,9 @@ OCRmyPDF is strict about not writing to standard output so that
users can safely use it in a pipeline and produce a valid output
file. A caller application will have to ensure it does not write to
standard output either, if it wants to be compatible with this
behavior and support piping to a file.
behavior and support piping to a file. Another benefit of running
OCRmyPDF in a child process, as recommended above, is that it will
not interfere with the parent process's standard output.
Exceptions
----------
+16 -2
View File
@@ -187,7 +187,7 @@ might remove desirable content, especially from poor quality scans.
background from grayscale or color images. Monochrome images are
ignored. This should not be used on documents that contain color
photos as it may remove them.
- ``--deskew`` will correct pages were scanned at a skewed angle by
- ``--deskew`` will correct pages that were scanned at a skewed angle by
rotating them back into place.
- ``--clean`` uses
`unpaper <https://www.flameeyes.eu/projects/unpaper>`__ to clean up
@@ -245,6 +245,20 @@ if all you want to is to apply image processing or PDF/A conversion.
the case. Use ``--tesseract-non-ocr-timeout`` to control the timeout
for non-OCR operations, if needed.
Remove all text or OCR from my PDF
----------------------------------
This is getting ridiculous, but OCRmyPDF can complete strip all textual
information from a PDF and reconstruct it as a "bag of images" PDF.
.. code-block::
ocrmypdf --tesseract-timeout 0 --force-ocr input.pdf output.pdf
Why would you want to do this? Perhaps you have a PDF where OCR
fails to produce useful results, and just want to get rid of all OCR information.
This command also removes OCR generated by third party tools.
Optimize images without performing OCR
--------------------------------------
@@ -393,4 +407,4 @@ any digital signatures will be invalidated.
OCRmyPDF cannot open documents that are encrypted with a digital certificate.
Versions of OCRmyPDF prior to 14.4.0 would invalidate existing digital signatures
without warning.
without warning.
+2 -2
View File
@@ -42,7 +42,7 @@ execute the image:
- Architecture
- Description
* - ``jbarlow83/ocrmypdf-alpine``
- x86_64 only
- x86_64 and arm64
- Recommended image, based on Alpine Linux.
* - ``jbarlow83/ocrmypdf-ubuntu``
- x86_64 and arm64
@@ -81,7 +81,7 @@ To start a Docker container (instance of the image):
.. code-block:: bash
docker tag jbarlow83/ocrmypdf ocrmypdf
docker tag jbarlow83/ocrmypdf-alpine ocrmypdf
docker run --rm -i ocrmypdf (... all other arguments here...) - -
For convenience, create a shell alias to hide the Docker command. It is
+80 -44
View File
@@ -23,7 +23,9 @@ These platforms have one-liner installs:
+-------------------------------+-----------------------------------------+
| Fedora | ``dnf install ocrmypdf tesseract-osd`` |
+-------------------------------+-----------------------------------------+
| macOS | ``brew install ocrmypdf`` |
| macOS (Homebrew) | ``brew install ocrmypdf`` |
+-------------------------------+-----------------------------------------+
| macOS (MacPorts) | ``port install ocrmypdf`` |
+-------------------------------+-----------------------------------------+
| LinuxBrew | ``brew install ocrmypdf`` |
+-------------------------------+-----------------------------------------+
@@ -99,12 +101,12 @@ For full details on version availability for your platform, check the
Fedora
------
.. |fedora-37| image:: https://repology.org/badge/version-for-repo/fedora_37/ocrmypdf.svg
:alt: Fedora 37
.. |fedora-38| image:: https://repology.org/badge/version-for-repo/fedora_38/ocrmypdf.svg
:alt: Fedora 38
.. |fedora-39| image:: https://repology.org/badge/version-for-repo/fedora_39/ocrmypdf.svg
:alt: Fedora 39
.. |fedora-rawhide| image:: https://repology.org/badge/version-for-repo/fedora_rawhide/ocrmypdf.svg
:alt: Fedore Rawhide
@@ -113,7 +115,7 @@ Fedora
+-----------------------------------------------+
| |latest| |
+-----------------------------------------------+
| |fedora-37| |fedora-38| |fedora-rawhide| |
| |fedora-38| |fedora-39| |fedora-rawhide| |
+-----------------------------------------------+
Users of Fedora may simply
@@ -123,7 +125,7 @@ Users of Fedora may simply
dnf install ocrmypdf tesseract-osd
For full details on version availability, check the `Fedora Package
Tracker <https://apps.fedoraproject.org/packages/ocrmypdf>`__.
Tracker <https://packages.fedoraproject.org/pkgs/ocrmypdf/ocrmypdf/>`__.
If the version available for your platform is out of date, you could opt
to install the latest version from source. See `Installing HEAD revision
@@ -135,10 +137,36 @@ from sources <#installing-head-revision-from-sources>`__.
issues. OCRmyPDF works fine without it but will produce larger output
files. If you build jbig2enc from source, ocrmypdf 7.0.0 and later
will automatically detect it on the ``PATH``. To add JBIG2 encoding,
see `Installing the JBIG2 encoder <jbig2>`__.
see :ref:`Installing the JBIG2 encoder <jbig2>`.
.. _ubuntu-lts-latest:
RHEL 9
------
Prepare the environment by getting Python 3.11:
.. code-block:: bash
dnf install python3.11 python3.11-pip
Then, follow `Requirements for pip and HEAD install <#requirements-for-pip-and-head-install>`__ to instal dependencies:
.. code-block:: bash
dnf install ghostscript tesseract
and build ocrmypdf in virtual environment:
.. code-block:: bash
python3.11 -m venv .venv
To add JBIG2 encoding, see :ref:`Installing the JBIG2 encoder <jbig2>`.
Note Fedora packages for language data haven't been branched for RHEL/EPEL, but you can get traineddata files directly from `tesseract
<https://github.com/tesseract-ocr/tessdata/>`__ and place them in ``/usr/share/tesseract/tessdata``.
Installing the latest version on Ubuntu 22.04 LTS
-------------------------------------------------
@@ -162,37 +190,13 @@ To add JBIG2 encoding, see :ref:`jbig2`.
Ubuntu 20.04 LTS
----------------
Ubuntu 20.04 includes ocrmypdf 9.6.0 - you can install that with ``apt``. To
install a more recent version, uninstall the system-provided version of
ocrmypdf, and install the following dependencies:
Ubuntu 20.04 includes ocrmypdf 9.6.0 - you can install that with ``apt``. The
most convenient way to install recent OCRmyPDF on older Ubuntu is to use
Homebrew on Linux (Linuxbrew).
.. code-block:: bash
sudo apt-get -y remove ocrmypdf # remove system ocrmypdf, if installed
sudo apt-get -y update
sudo apt-get -y install \
ghostscript \
icc-profiles-free \
libxml2 \
pngquant \
python3-pip \
tesseract-ocr \
zlib1g
To install ocrmypdf for the system:
.. code-block:: bash
pip3 install ocrmypdf
To install for the current user only:
.. code-block:: bash
export PATH=$HOME/.local/bin:$PATH
pip3 install --user ocrmypdf
To add JBIG2 encoding, see :ref:`jbig2`.
brew install ocrmypdf
Arch Linux (AUR)
----------------
@@ -215,12 +219,12 @@ you are using a VM image, such as `the official Vagrant image
be completed for you.
Next you should install the `base-devel package group
<https://www.archlinux.org/groups/x86_64/base-devel/>`__. This includes the
<https://archlinux.org/packages/core/any/base-devel/>`__. This includes the
standard tooling needed to build packages, such as a compiler and binary tools.
.. code-block:: bash
sudo pacman -S base-devel
sudo pacman -S --needed base-devel
Now you are ready to install the OCRmyPDF package.
@@ -258,7 +262,7 @@ page.
<https://aur.archlinux.org/packages/jbig2enc-git/>`__ and may be installed
using the same series of steps as for the installation OCRmyPDF AUR
package. Alternatively, it may be built manually from source following the
instructions in `Installing the JBIG2 encoder <jbig2>`__. If JBIG2 is
instructions in :ref:`Installing the JBIG2 encoder <jbig2>`. If JBIG2 is
installed, OCRmyPDF 7.0.0 and later will automatically detect it.
Alpine Linux
@@ -323,6 +327,22 @@ languages you can optionally install them all:
brew install tesseract-lang # Optional: Install all language packs
MacPorts
--------
.. image:: https://img.shields.io/badge/dynamic/json?url=https%3A%2F%2Fports.macports.org%2Fapi%2Fv1%2Fports%2Focrmypdf%2F%3Fformat%3Djson&query=version&label=MacPorts
:alt: Macports Version Information
:target: https://ports.macports.org/port/ocrmypdf
OCRmyPDF is includes in MacPorts:
.. code-block:: bash
sudo port install ocrmypdf
Note that while this will install tesseract you will need to install
the appropriate tesseract `language ports <https://ports.macports.org/search/?selected_facets=categories_exact%3Atextproc&installed_file=&q=tesseract&name=on>`__.
Manual installation on macOS
----------------------------
@@ -404,7 +424,7 @@ the following when running in an Administrator command prompt):
* ``choco install --pre tesseract``
* ``choco install pngquant`` (optional)
Either set of commands will install the required software. At the mmoment there is no
Either set of commands will install the required software. At the moment there is no
single command to install Windows.
You may then use ``pip`` to install ocrmypdf. (This can performed by a user or
@@ -540,9 +560,25 @@ try:
pip install --user ocrmypdf
(If the message appears ``Requirement already satisfied: ocrmypdf in...``,
you will need to use ``pip install --user --upgrade ocrmypdf``.)
You should then be able to run ``ocrmypdf --version`` and see that the
latest version was located.
Installing with pipx
====================
Some users may prefer pipx. As with the method above, you will need to
satisfy all non-Python dependencies. Then if pipx is installed, you
can use
.. code-block:: bash
pipx run ocrmypdf
(If not installed, pipx will install first.)
Requirements for pip and HEAD install
-------------------------------------
@@ -553,7 +589,7 @@ manager. ``pip`` cannot provide them.
The following versions are required:
- Python 3.10 or newer
- Ghostscript 9.55 or newer
- Ghostscript 9.54 or newer
- Tesseract 4.1.1 or newer
- jbig2enc 0.29 or newer
- pngquant 2.5 or newer
@@ -605,7 +641,7 @@ environment:
pip install git+https://github.com/ocrmypdf/OCRmyPDF.git
Or, to install in `development
mode <https://pythonhosted.org/setuptools/setuptools.html#development-mode>`__,
mode <https://packaging.python.org/en/latest/guides/distributing-packages-using-setuptools/#working-in-development-mode>`__,
allowing customization of OCRmyPDF, use the ``-e`` flag:
.. code-block:: bash
@@ -645,7 +681,7 @@ To install all of the development and test requirements:
.. code-block:: bash
git clone -b main https://github.com/ocrmypdf/OCRmyPDF.git
python -m .venv
python -m venv .venv
source .venv/bin/activate
cd OCRmyPDF
pip install -e .[test]
@@ -671,7 +707,7 @@ To manually install the ``fish`` completion, copy
Note on 32-bit support
======================
Many Python libraries no longer 32-bit binary wheels for Linux. This
Many Python libraries no longer provide 32-bit binary wheels for Linux. This
includes many of the libraries that OCRmyPDF depends on, such as
Pillow. The easiest way to express this to end users is to say we don't
support 32-bit Linux.
@@ -681,4 +717,4 @@ can still install and use OCRmyPDF. A warning message will appear.
In practice, OCRmyPDF may need more than 32-bit memory space to run when
large documents are processed, so there are practical limitations to what
users can accomplish with it. Still, for the common use case of an 32-bit
ARM NAS or Raspberry Pi processing small documents, it should work.
ARM NAS or Raspberry Pi processing small documents, it should work.
+9 -1
View File
@@ -41,7 +41,15 @@ For all other platforms, you would need to build the JBIG2 encoder from source:
Dependencies include libtoolize and libleptonica, which on Ubuntu systems
are packaged as libtool and libleptonica-dev. On Fedora (35) they are packaged
as libtool and leptonica-devel.
as libtool and leptonica-devel. For this to work, please make sure to install
``autotools``, ``automake``, ``libtool`` and ``leptonica`` first if not already
installed.
.. code-block:: bash
[sudo] apt install autotools-dev automake libtool libleptonica-dev
..
Lossy mode JBIG2
================
+47 -13
View File
@@ -18,16 +18,26 @@ Tesseract's documentation also lists the three-letter code for your language.
Some are anglicized, e.g. Spanish is ``spa`` rather than ``esp``, while others
are not, e.g. German is ``deu`` and French is ``fra``.
Language packs (strictly speaking, Tesseract "traineddata" files) generally correspond
to the language in question, but different language packs are used in certain
situations. For German, the "Fraktur" language pack can assist with reading older
materials in the Fraktur typeface family (``deu_frak``). Some communities have changed
their script from Cyrillic to Latin; the Cyrillic version of Uzbek is available
as ``uzb_cyrl`` and the Latin version is ``uzb``.
After you have installed a language pack, you can use it with ``ocrmypdf -l <language>``,
for example ``ocrmypdf -l spa``. For multilingual documents, you can specify
all languages to be expected, e.g. ``ocrmypdf -l eng+fra`` for English and French.
English is assumed by default unless other language(s) are specified.
For Linux users, you can often find packages that provide language
packs:
packs.
Debian and Ubuntu users
=======================
Platform install steps
======================
Debian and Ubuntu (apt)
-----------------------
.. code-block:: bash
@@ -42,8 +52,8 @@ to what languages it should search for. Multiple languages can be
requested using either ``-l eng+fra`` (English and French) or
``-l eng -l fra``.
Fedora users
============
Fedora
------
.. code-block:: bash
@@ -58,8 +68,24 @@ to what languages it should search for. Multiple languages can be
requested using either ``-l eng+fra`` (English and French) or
``-l eng -l fra``.
Gentoo users
============
Archlinux
------
.. code-block:: bash
# Display a list of all Tesseract language packs
pacman -Ss tesseract-data
# Install German language pack
pacman -S tesseract-data-deu
You can then pass the ``-l LANG`` argument to OCRmyPDF to give a hint as
to what languages it should search for. Multiple languages can be
requested using either ``-l eng+fra`` (English and French) or
``-l eng -l fra``.
Gentoo
------
On Gentoo the package ``app-text/tessdata_fast``, which ``app-text/tesseract`` depends on, handles Tesseract languages.
It accepts USE flags to select what languages should be installed, these can be set in ``/etc/portage/package.use``.
@@ -85,23 +111,31 @@ to what languages it should search for. Multiple languages can be
requested using either ``-l eng+fra`` (English and French) or
``-l eng -l fra``.
macOS users
===========
macOS
-----
You can install additional language packs by
:ref:`installing Tesseract using Homebrew with all language packs <macos-all-languages>`.
Docker users
============
Docker
------
Users of the OCRmyPDF Docker image should install language packs into a
derived Docker image as
:ref:`described in that section <docker-lang-packs>`.
Windows users
=============
Windows
-------
The Tesseract installer provided by Chocolatey currently includes only English language.
To install other languages, download the respective language pack (``.traineddata`` file)
from https://github.com/tesseract-ocr/tessdata/ and place it in
``C:\\Program Files\\Tesseract-OCR\\tessdata`` (or wherever Tesseract OCR is installed).
Custom language packs
=====================
If you have fine-tuned or trained Tesseract and generated custom trained data, you can
copy your ``customlang.traineddata`` file into your Tesseract "tessdata" folder, and
then use the ``-l customlang`` argument to tell OCRmyPDF to pass that language on to
Tesseract.
+10 -1
View File
@@ -64,4 +64,13 @@ installation documentation.
If you maintain a Linux distribution that supports 32-bit x86 or ARM, OCRmyPDF
should continue to work as long as all of its dependencies continue to be
available in 32-bit form. Please note we do not test on 32-bit platforms.
available in 32-bit form. Please note we do not test on 32-bit platforms.
HEIF/HEIC
---------
OCRmyPDF defaults to installing the pi-heif PyPI package, which supports converting
HEIF (High Efficiency Image File Format) images to PDF from the command line.
If your distribution does not have this library available, you can exclude it and
OCRmyPDF will gracefully degrade automatically, losing only support for this
feature.
+129 -2
View File
@@ -30,8 +30,135 @@ OCRmyPDF typically supports the three most recent Python versions.
.. |OCRmyPDF PyPI| image:: https://img.shields.io/pypi/v/ocrmypdf.svg
v16.0.0rc1
==========
v16.4.2
=======
- Fixed order of filenames passed to Ghostscript for PDF/A generation. :issue:`1359`
- Suppressed missing jbig2dec warning message. :issue:`1358`
- Fixed calculation of image size when soft mask dimensions don't match image
dimension. :issue:`1351`
- Several fixes to documentation. Thanks to users Iris and JoKalliauer
who contributed these changes.
- Fixed error on processing PDFs that are missing certain image metadata. :issue:`1315`
v16.4.1
=======
- Fixed calculation of image printed area (used in finding weighted DPI for OCR).
:issue:`1334`
- Fixed "NotImplementedError: not sure how to get colorspace" error
messages in logs which simply records a failure to optimize images with
print production colorspaces. :issue:`1315`
v16.4.0
=======
- Selecting the ``osd`` and ``equ`` pseudo-languages with ``-l/--language`` now
exits with an error when using Tesseract OCR, because these are not
regular Tesseract languages but implementation details implemented.
Using them can cause Tesseract to crash.
- The hOCR renderer is more tolerant of extra whitespace in input files.
- watcher.py now changes the output file extension to .pdf when the input is not
.pdf.
- Improved handling of PDFs that contain circularly referenced Form XObjects.
:issue:`1321`
- Fixed Alpine Docker image for ARM64, which was not building correctly.
- Docker images now use pikepdf 9.0.0.
- Prevent use of Tesseract OCR 5.4.0, a version with known regressions.
- Disabled progressbar for "Linearizing" when ``--no-progress-bar`` set.
- Fixed some tests that warn about missing JBIG2 decoding via pikepdf, by
installing the necessary libraries during tests.
v16.3.1
=======
- Fixed a test suite failure with Ghostscript 10.03.0+. :issue:`1316`
- Fixed an issue with the presentation of the "OCR" progress bar. :issue:`1313`
v16.3.0
=======
- Fixed progress bar not displaying for Ghostscript PDF/A conversion. :issue:`1313`
- Added progress bar for linearization. :issue:`1313`
- If `--rotate-pages-threshold` issued without `--rotate-pages` we now exit with
an error since the user likely intended to use `--rotate-pages`. :issue:`1309`
- If Tesseract hOCR gives an invalid line box, print an error message instead of
exiting with an error. :issue:`1312`
v16.2.0
=======
- Fixed issue 'NoneType' object has no attribute 'get' when optimizing certain PDFs.
:issue:`1293,1271`
- Switched formatting from black to ruff.
- Added support for sending sidecar output to io.BytesIO.
- Added support for converting HEIF/HEIC images (the native image of iPhones and
some other devices) to PDFs, when the appropriate pi-hief library is installed.
This library is marked as a dependency, but maintainers may opt out if needed.
- We now default to downsampling large images that would exceed Tesseract's internal
limits, but only if it cause processing to fail. Previously, this behavior only
occurred if specifically requested on command line. It can still be configured
and disabled. See the --tesseract command line options.
- Added Macports install instructions. Thanks @akierig.
- Improved logging output when an unexpected error occurs while trying to obtain
the version of a third party program.
v16.1.2
=======
- Fixed test suite failure when using Ghostscript 10.3.
- Other minor corrections.
v16.1.1
=======
- Fixed PyPy 3.10 support.
v16.1.0
=======
- Improved hOCR renderer is now default for left to right languages.
- Improved handling of rotated pages. Previously, OCR text might be missing for
pages that were rotated with a /Rotate tag on the page entry.
- Improved handling of cropped pages. Previously, in some cases a page with a
crop box would not have its OCR applied correctly and misalignment between
OCR text and visible text coudl occur.
- Documentation improvements, especially installation instructions for less
common platforms.
v16.0.4
=======
- Fixed some issues for left-to-right text with the new hOCR renderer. It is still
not default yet but will be made so soon. Right-to-left text is still in progress.
- Added an error to prevent use of several versions of Ghostscript that seem
corrupt existing text in input PDFs. Newly generated OCR is not affected.
For best results, use Ghostscript 10.02.1 or newer, which contains the fix
for the issue.
v16.0.3
=======
- Changed minimum required Ghostscript to 9.54, to support users of RHEL 9 and its
derivatives, since that is the latest version available there.
- Removed warning message about CVE-2023-43115, on the assumption that most
distributions have backported the patch by now.
v16.0.2
=======
- Temporarily changed PDF text renderer back to sandwich by default to address
regressions in macOS Preview.
v16.0.1
=======
- Fixed text rendering issue with new hOCR text renderer - extraneous byte order
marks.
- Tightened dependencies.
v16.0.0
=======
- Added OCR text renderer, combined the best ideas of Tesseract's PDF
generator and the older hOCR transformer renderer. The result is a hopefully
+48 -10
View File
@@ -1,5 +1,6 @@
#!/usr/bin/env python3
# SPDX-FileCopyrightText: 2016 findingorder <https://github.com/findingorder>
# SPDX-FileCopyrightText: 2024 nilsro <https://github.com/nilsro>
# SPDX-License-Identifier: MIT
"""Example of using ocrmypdf as a library in a script.
@@ -13,7 +14,11 @@ You should edit this script to meet your needs.
from __future__ import annotations
import filecmp
import logging
import os
import posixpath
import shutil
import sys
from pathlib import Path
@@ -22,32 +27,65 @@ import ocrmypdf
# pylint: disable=logging-format-interpolation
# pylint: disable=logging-not-lazy
def filecompare(a, b):
try:
return filecmp.cmp(a, b, shallow=True)
except FileNotFoundError:
return False
script_dir = Path(__file__).parent
# set archive_dir to a path for backup original documents. Leave empty if not required.
archive_dir = "/pdfbak"
if len(sys.argv) > 1:
start_dir = Path(sys.argv[1])
else:
start_dir = Path('.')
start_dir = Path(".")
if len(sys.argv) > 2:
log_file = Path(sys.argv[2])
else:
log_file = script_dir.with_name('ocr-tree.log')
log_file = script_dir.with_name("ocr-tree.log")
logging.basicConfig(
level=logging.INFO,
format='%(asctime)s %(message)s',
format="%(asctime)s %(message)s",
filename=log_file,
filemode='a',
filemode="a",
)
logging.info(f"Start directory {start_dir}")
ocrmypdf.configure_logging(ocrmypdf.Verbosity.default)
for filename in start_dir.glob("**/*.py"):
for filename in start_dir.glob("**/*.pdf"):
logging.info(f"Processing {filename}")
result = ocrmypdf.ocr(filename, filename, deskew=True)
if result == ocrmypdf.ExitCode.already_done_ocr:
logging.error("Skipped document because it already contained text")
elif result == ocrmypdf.ExitCode.ok:
if ocrmypdf.pdfa.file_claims_pdfa(filename)["pass"]:
logging.info("Skipped document because it already contained text")
else:
archive_filename = archive_dir + str(filename)
if len(archive_dir) > 0 and not filecompare(filename, archive_filename):
logging.info(f"Archiving document to {archive_filename}")
try:
shutil.copy2(filename, posixpath.dirname(archive_filename))
except OSError:
os.makedirs(posixpath.dirname(archive_filename))
shutil.copy2(filename, posixpath.dirname(archive_filename))
try:
result = ocrmypdf.ocr(filename, filename, deskew=True)
logging.info(result)
except ocrmypdf.exceptions.EncryptedPdfError:
logging.info("Skipped document because it is encrypted")
except ocrmypdf.exceptions.PriorOcrFoundError:
logging.info("Skipped document because it already contained text")
except ocrmypdf.exceptions.DigitalSignatureError:
logging.info("Skipped document because it has a digital signature")
except ocrmypdf.exceptions.TaggedPDFError:
logging.info(
"Skipped document because it does not need ocr as it is tagged"
)
except Exception:
logging.error("Unhandled error occured")
logging.info("OCR complete")
logging.info(result)
+4 -3
View File
@@ -53,9 +53,10 @@ for dir_name, _subdirs, file_list in os.walk(start_dir):
]
logging.info(cmd)
full_path_ocr = os.path.join(dir_name, filename_ocr)
with open(filename, 'rb') as input_file, open(
full_path_ocr, 'wb'
) as output_file:
with (
open(filename, 'rb') as input_file,
open(full_path_ocr, 'wb') as output_file,
):
proc = subprocess.run(
cmd,
stdin=input_file,
+9 -7
View File
@@ -7,7 +7,6 @@
# Do not enable annotations!
# https://github.com/tiangolo/typer/discussions/598
# from __future__ import annotations
import json
import logging
@@ -47,15 +46,18 @@ class LoggingLevelEnum(str, Enum):
CRITICAL = "CRITICAL"
def get_output_dir(root: Path, basename: str, output_dir_year_month: bool) -> Path:
def get_output_path(root: Path, basename: str, output_dir_year_month: bool) -> Path:
assert '/' not in basename, "basename must not contain '/'"
if output_dir_year_month:
today = datetime.today()
output_directory_year_month = root / str(today.year) / f'{today.month:02d}'
if not output_directory_year_month.exists():
output_directory_year_month.mkdir(parents=True, exist_ok=True)
output_path = Path(output_directory_year_month) / basename
output_path = Path(output_directory_year_month) / Path(basename).with_suffix(
'.pdf'
)
else:
output_path = root / basename
output_path = root / Path(basename).with_suffix('.pdf')
return output_path
@@ -99,7 +101,7 @@ def execute_ocrmypdf(
retries_loading_file: int,
output_dir_year_month: bool,
):
output_path = get_output_dir(output_dir, file_path.name, output_dir_year_month)
output_path = get_output_path(output_dir, file_path.name, output_dir_year_month)
log.info("-" * 20)
log.info(f'New file: {file_path}. Waiting until fully written...')
@@ -131,7 +133,7 @@ def execute_ocrmypdf(
class HandleObserverEvent(PatternMatchingEventHandler):
def __init__(
def __init__( # noqa: D107
self,
patterns=None,
ignore_patterns=None,
@@ -191,7 +193,7 @@ def main(
bool,
typer.Option(
envvar='OCR_OUTPUT_DIRECTORY_YEAR_MONTH',
help='Create a subdirectory in the output directory for each year and month',
help='Create a subdirectory in the output directory for each year/month',
),
] = False,
on_success_delete: Annotated[
+21 -35
View File
@@ -12,13 +12,14 @@ readme = "README.md"
license = { text = "MPL-2.0" }
requires-python = ">=3.10"
dependencies = [
"Pillow>=10.0.1",
"deprecation>=2.1.0",
"img2pdf>=0.4.4",
"img2pdf>=0.5",
"packaging>=20",
"pdfminer.six>=20220319",
"pikepdf>=8.8.0",
"pluggy>=0.13.0",
"pi-heif", # Heif image format - maintainers: if this is removed, it will NOT break
"pikepdf>=8.10.1",
"Pillow>=10.0.1",
"pluggy>=1",
"rich>=13",
]
authors = [{ name = "James R. Barlow", email = "james@purplerock.ca" }]
@@ -60,7 +61,7 @@ test = [
"types-Pillow",
"types-humanfriendly",
]
watcher = ["watchdog>=1.0.2", "typer[all]", "python-dotenv"]
watcher = ["watchdog>=1.0.2", "typer-slim[standard]", "python-dotenv"]
webservice = ["Flask>=2.0.1"]
[project.scripts]
@@ -78,29 +79,6 @@ namespaces = false
[tool.distutils.bdist_wheel]
python-tag = "py310"
[tool.black]
line-length = 88
target-version = ["py310", "py311", "py312"]
skip-string-normalization = true
include = '\.pyi?$'
exclude = '''
/(
\.eggs
| \.git
| \.hg
| \.mypy_cache
| \.tox
| \.venv
| _build
| buck-out
| build
| dist
| docs
| misc
| \.egg-info
)/
'''
[tool.coverage.run]
branch = true
parallel = true
@@ -131,7 +109,11 @@ norecursedirs = ["lib", ".pc", ".git", "venv", "output", "cache", "resources"]
testpaths = ["tests"]
addopts = "-n auto"
markers = ["slow"]
filterwarnings = ["ignore:.*XMLParser.*:DeprecationWarning"]
filterwarnings = [
"ignore:.*XMLParser.*:DeprecationWarning",
"ignore:.*ast.NameConstant.*:DeprecationWarning:reportlab",
"ignore:.*distutils.*:DeprecationWarning:libxmp",
]
[tool.mypy]
@@ -149,7 +131,10 @@ module = [
ignore_missing_imports = true
[tool.ruff]
select = [
target-version = "py310"
[tool.ruff.lint]
"select" = [
"D", # pydocstyle
"E", # pycodestyle
"W", # pycodestyle
@@ -157,17 +142,18 @@ select = [
"I001", # isort
"UP", # pyupgrade
]
target-version = "py310"
[tool.ruff.isort]
[tool.ruff.lint.isort]
known-first-party = ["ocrmypdf"]
required-imports = ["from __future__ import annotations"]
[tool.ruff.pydocstyle]
[tool.ruff.lint.pydocstyle]
convention = "google"
[tool.ruff.per-file-ignores]
[tool.ruff.lint.per-file-ignores]
"docs/conf.py" = ["D100", "D101", "D105"]
"tests/*.py" = ["D100", "D101", "D102", "D103", "D105"]
"misc/*.py" = ["D103", "D101", "D102"]
"src/ocrmypdf/builtin_plugins/*.py" = ["D103", "D102", "D105"]
[tool.ruff.format]
quote-style = "preserve"
+2 -2
View File
@@ -18,8 +18,8 @@ architectures: [amd64]
environment:
TESSDATA_PREFIX: $SNAP/usr/share/tesseract-ocr/4.00/tessdata
GS_LIB: $SNAP/usr/share/ghostscript/9.55/Resource/Init
GS_FONTPATH: $SNAP/usr/share/ghostscript/9.55/Resource/Font
GS_LIB: $SNAP/usr/share/ghostscript/9.55.0/Resource/Init
GS_FONTPATH: $SNAP/usr/share/ghostscript/9.55.0/Resource/Font
LD_LIBRARY_PATH: $SNAP/usr/lib/x86_64-linux-gnu
apps:
+2 -2
View File
@@ -7,8 +7,8 @@ from __future__ import annotations
import threading
from abc import ABC, abstractmethod
from collections.abc import Iterable
from typing import Any, Callable, TypeVar
from collections.abc import Callable, Iterable
from typing import Any, TypeVar
from ocrmypdf._progressbar import NullProgressBar, ProgressBar
+8
View File
@@ -0,0 +1,8 @@
# SPDX-FileCopyrightText: 2024 James R. Barlow
# SPDX-License-Identifier: MPL-2.0
# Enforce English hegemony
DEFAULT_LANGUAGE = 'eng'
# Default rotation threshold
DEFAULT_ROTATE_PAGES_THRESHOLD = 14.0
+18 -3
View File
@@ -177,6 +177,17 @@ class GhostscriptFollower:
self.progressbar_class = progressbar_class
self.progressbar = None
def __enter__(self):
# We can't actually set up the progressbar here, because we don't know
# how many pages there are until the first __call__() happens. So we
# do it in __call__().
return self
def __exit__(self, exc_type, exc_value, traceback):
if self.progressbar:
return self.progressbar.__exit__(exc_type, exc_value, traceback)
return False
def __call__(self, line):
if not self.progressbar_class:
return
@@ -187,7 +198,8 @@ class GhostscriptFollower:
self.progressbar = self.progressbar_class(
total=self.count, desc="PDF/A conversion", unit='page'
)
return
# Now that we know the count, we can set up the progressbar.
self.progressbar.__enter__()
else:
if self.re_page.match(line.strip()):
self.progressbar.update()
@@ -265,7 +277,10 @@ def generate_pdfa(
)
args_gs.extend(fspath(s) for s in pdf_pages) # Stringify Path objs
try:
with Path(output_file).open('wb') as output:
with (
Path(output_file).open('wb') as output,
GhostscriptFollower(progressbar_class) as pbar,
):
p = run_polling_stderr(
args_gs,
stdout=output,
@@ -274,7 +289,7 @@ def generate_pdfa(
text=True,
encoding='utf-8',
errors='replace',
callback=GhostscriptFollower(progressbar_class),
callback=pbar,
)
except CalledProcessError as e:
# Ghostscript does not change return code when it fails to create
+2 -1
View File
@@ -220,7 +220,8 @@ def get_deskew(
def tesseract_log_output(stream: bytes) -> None:
tlog = TesseractLoggerAdapter(
log, extra=log.extra if hasattr(log, 'extra') else None # type: ignore
log,
extra=log.extra if hasattr(log, 'extra') else None, # type: ignore
)
if not stream:
+2 -4
View File
@@ -8,19 +8,17 @@ from __future__ import annotations
import logging
import os
import shlex
import sys
from collections.abc import Iterator
from contextlib import contextmanager
from decimal import Decimal
from pathlib import Path
from subprocess import PIPE, STDOUT
from tempfile import TemporaryDirectory
from typing import Union
from packaging.version import Version
from PIL import Image
from ocrmypdf.exceptions import MissingDependencyError, SubprocessOutputError
from ocrmypdf.exceptions import SubprocessOutputError
from ocrmypdf.subprocess import get_version, run
# unpaper documentation:
@@ -29,7 +27,7 @@ from ocrmypdf.subprocess import get_version, run
UNPAPER_IMAGE_PIXEL_LIMIT = 256 * 1024 * 1024
DecFloat = Union[Decimal, float]
DecFloat = Decimal | float
log = logging.getLogger(__name__)
+12 -5
View File
@@ -289,9 +289,9 @@ class OcrGrafter:
# Translate the text so it is centered at (0, 0), rotate it there, adjust
# for a size different between initial and text PDF, then untranslate, and
# finally move the lower left corner to match the mediabox. All transforms
# must be premultiplied so they are applied in reverse order here.
ctm = corner @ untranslate @ scale @ rotate @ translate
# finally move the lower left corner to match the mediabox.
ctm = translate @ rotate @ scale @ untranslate @ corner
log.debug("Grafting with ctm %r", ctm)
base_resources = _ensure_dictionary(base_page.obj, Name.Resources)
base_xobjs = _ensure_dictionary(base_resources, Name.XObject)
@@ -311,9 +311,16 @@ class OcrGrafter:
if strip_old_text:
strip_invisible_text(self.pdf_base, base_page)
base_page.contents_coalesce()
if self.render_mode == RenderMode.ON_TOP:
# Add q/Q to ensure content we append is drawn correctly
# Strictly speaking this needs to trace the whole q/Q stack in case
# stack is not balanced.
original = base_page.Contents.read_bytes()
base_page.Contents.write(b'q\n' + original + b'\nQ\n')
base_page.contents_add(
new_text_layer, prepend=self.render_mode == RenderMode.ON_TOP
new_text_layer, prepend=self.render_mode == RenderMode.UNDERNEATH
)
base_page.contents_coalesce()
_update_resources(obj=base_page.obj, font=font, font_key=font_key)
+2 -2
View File
@@ -93,8 +93,8 @@ class PageContext:
state = self.__dict__.copy()
state['options'] = copy(self.options)
if not isinstance(state['options'].input_file, (str, bytes, os.PathLike)):
if not isinstance(state['options'].input_file, str | bytes | os.PathLike):
state['options'].input_file = 'stream'
if not isinstance(state['options'].output_file, (str, bytes, os.PathLike)):
if not isinstance(state['options'].output_file, str | bytes | os.PathLike):
state['options'].output_file = 'stream'
return state
+37 -7
View File
@@ -153,22 +153,52 @@ def _set_language(pdf: Pdf, languages: list[str]):
pdf.Root.Lang = iso639_2
class MetadataProgress:
def __init__(self, progressbar_class, enable: bool = True):
self.progressbar_class = progressbar_class
self.progressbar = self.progressbar_class(
total=100, desc="Linearizing", unit='%', disable=not enable
)
def __enter__(self):
self.progressbar.__enter__()
return self
def __exit__(self, exc_type, exc_value, traceback):
return self.progressbar.__exit__(exc_type, exc_value, traceback)
def __call__(self, percent: int):
if not self.progressbar_class:
return
self.progressbar.update(completed=percent)
def metadata_fixup(
working_file: Path, context: PdfContext, pdf_save_settings: dict[str, Any]
) -> Path:
"""Fix certain metadata fields after Ghostscript PDF/A conversion.
"""Fix certain metadata fields whether PDF or PDF/A.
Override some of Ghostscript's metadata choices.
Also report on metadata in the input file that was not retained during
PDF/A conversion.
conversion.
"""
output_file = context.get_path('metafix.pdf')
options = context.options
with Pdf.open(context.origin) as original, Pdf.open(working_file) as pdf:
pbar_class = context.plugin_manager.hook.get_progressbar_class()
with (
Pdf.open(context.origin) as original,
Pdf.open(working_file) as pdf,
MetadataProgress(pbar_class, options.progress_bar) as pbar,
):
docinfo = get_docinfo(original, context)
with original.open_metadata(
set_pikepdf_as_editor=False, update_docinfo=False, strict=False
) as meta_original, pdf.open_metadata() as meta_pdf:
with (
original.open_metadata(
set_pikepdf_as_editor=False, update_docinfo=False, strict=False
) as meta_original,
pdf.open_metadata() as meta_pdf,
):
meta_pdf.load_from_docinfo(
docinfo, delete_missing=False, raise_failure=False
)
@@ -179,6 +209,6 @@ def metadata_fixup(
report_on_metadata(options, meta_missing)
_set_language(pdf, options.languages)
pdf.save(output_file, **pdf_save_settings)
pdf.save(output_file, progress=pbar, **pdf_save_settings)
return output_file
+98 -13
View File
@@ -12,8 +12,9 @@ import re
import sys
from collections.abc import Iterable, Iterator, Sequence
from contextlib import suppress
from io import BytesIO
from pathlib import Path
from shutil import copyfileobj, copystat
from shutil import copyfileobj
from typing import Any, BinaryIO, TypeVar, cast
import img2pdf
@@ -34,17 +35,29 @@ from ocrmypdf.exceptions import (
UnsupportedImageFormatError,
)
from ocrmypdf.helpers import IMG2PDF_KWARGS, Resolution, safe_symlink
from ocrmypdf.hocrtransform import HocrTransform
from ocrmypdf.hocrtransform import DebugRenderOptions, HocrTransform
from ocrmypdf.hocrtransform._font import Courier
from ocrmypdf.pdfa import generate_pdfa_ps
from ocrmypdf.pdfinfo import Colorspace, Encoding, PageInfo, PdfInfo
from ocrmypdf.pluginspec import OrientationConfidence
try:
from pi_heif import register_heif_opener
except ImportError:
def register_heif_opener():
pass
T = TypeVar("T")
log = logging.getLogger(__name__)
VECTOR_PAGE_DPI = 400
register_heif_opener()
def triage_image_file(input_file: Path, output_file: Path, options) -> None:
"""Triage the input image file.
@@ -129,7 +142,7 @@ def _pdf_guess_version(input_file: Path, search_window=1024) -> str:
"""
with open(input_file, 'rb') as f:
signature = f.read(search_window)
m = re.search(br'%PDF-(\d\.\d)', signature)
m = re.search(rb'%PDF-(\d\.\d)', signature)
if m:
return m.group(1).decode('ascii')
return ''
@@ -462,7 +475,7 @@ def calculate_raster_dpi(page_context: PageContext):
page_dpi = get_page_square_dpi(page_context, image_dpi)
if dpi_profile and dpi_profile.average_to_max_dpi_ratio < 0.8:
log.warning(
"Weight average image DPI is %0.1f, max DPI is %0.1f. "
"Weighted average image DPI is %0.1f, max DPI is %0.1f. "
"The discrepancy may indicate a high detail region on this page, "
"but could also indicate a problem with the input PDF file. "
"Page image will be rendered at %0.1f DPI.",
@@ -712,19 +725,29 @@ def create_pdf_page_from_image(
pageinfo = page_context.pageinfo
pagesize = 72.0 * float(pageinfo.width_inches), 72.0 * float(pageinfo.height_inches)
effective_rotation = (pageinfo.rotation - orientation_correction) % 360
if effective_rotation % 180 == 90:
swap_axis = effective_rotation % 180 == 90
if swap_axis:
pagesize = pagesize[1], pagesize[0]
# This create a single page PDF
with open(image, 'rb') as imfile, open(output_file, 'wb') as pdf:
# Create a new single page PDF to hold
bio = BytesIO()
with open(image, 'rb') as imfile:
log.debug('convert')
layout_fun = img2pdf.get_layout_fun(pagesize)
img2pdf.convert(
imfile, layout_fun=layout_fun, outputstream=pdf, **IMG2PDF_KWARGS
imfile,
layout_fun=layout_fun,
outputstream=bio,
engine=img2pdf.Engine.pikepdf,
rotation=img2pdf.Rotation.ifvalid,
)
log.debug('convert done')
# img2pdf does not generate boxes correctly, so we fix them
bio.seek(0)
fix_pagepdf_boxes(bio, output_file, page_context, swap_axis=swap_axis)
output_file = page_context.plugin_manager.hook.filter_pdf_page(
page=page_context, image_filename=image, output_pdf=output_file
)
@@ -741,15 +764,27 @@ def render_hocr_page(hocr: Path, page_context: PageContext) -> Path:
return output_file
dpi = get_page_square_dpi(page_context, calculate_image_dpi(page_context))
debug_mode = options.pdf_renderer == 'hocrdebug'
debug_kwargs = {}
if options.pdf_renderer == 'hocrdebug':
debug_kwargs = dict(
debug_render_options=DebugRenderOptions(
render_baseline=True,
render_triangle=True,
render_line_bbox=False,
render_word_bbox=True,
render_paragraph_bbox=False,
render_space_bbox=False,
),
font=Courier(),
)
HocrTransform(
hocr_filename=hocr,
dpi=dpi.to_scalar(), # square
debug=debug_mode,
dpi=dpi.to_scalar(),
**debug_kwargs, # square
).to_pdf(
out_filename=output_file,
image_filename=None,
invisible_text=True if not debug_kwargs else False,
)
return output_file
@@ -769,7 +804,57 @@ def ocr_engine_textonly_pdf(
output_text=output_text,
options=options,
)
return (output_pdf, output_text)
return output_pdf, output_text
def _offset_rect(rect: tuple[float, float, float, float], offset: tuple[float, float]):
"""Offset a rectangle by a given amount."""
return (
rect[0] + offset[0],
rect[1] + offset[1],
rect[2] + offset[0],
rect[3] + offset[1],
)
def fix_pagepdf_boxes(
infile: Path | BinaryIO,
out_file: Path,
page_context: PageContext,
swap_axis: bool = False,
) -> Path:
"""Fix the bounding boxes in a single page PDF.
The single page PDF is created with a normal MediaBox with its lower left corner
at (0, 0). infile is the single page PDF. page_context.mediabox has the original
file's mediabox, which may have a different origin. We needto adjust the other
boxes in the single page PDF to match the effect they had on the original page.
When correcting page rotation, we create a single page PDF that is correctly
rotated instead of an incorrectly rotated and then setting page.Rotate on it.
If rotation is either 90 or 270 degrees, then this function can be called
with swap_axis to swap the X and Y coordinates of all the boxes.
We are not concerned with solving degenerate cases where the boxes overlap or
or express invalid rectangles. We merely pass the boxes, producing a
transformation equivalent to the change made by constructing a new page image.
"""
with pikepdf.open(infile) as pdf:
for page in pdf.pages:
# page.BleedBox = page_context.pageinfo.bleedbox
# page.ArtBox = page_context.pageinfo.artbox
mediabox = page_context.pageinfo.mediabox
offset = mediabox[0], mediabox[1]
cropbox = _offset_rect(page_context.pageinfo.cropbox, offset)
trimbox = _offset_rect(page_context.pageinfo.trimbox, offset)
if swap_axis:
cropbox = cropbox[1], cropbox[0], cropbox[3], cropbox[2]
trimbox = trimbox[1], trimbox[0], trimbox[3], trimbox[2]
page.CropBox = cropbox
page.TrimBox = trimbox
pdf.save(out_file)
return pdf
def generate_postscript_stub(context: PdfContext) -> Path:
+2 -2
View File
@@ -11,13 +11,13 @@ import os
import shutil
import sys
import threading
from collections.abc import Sequence
from collections.abc import Callable, Sequence
from concurrent.futures.process import BrokenProcessPool
from concurrent.futures.thread import BrokenThreadPool
from contextlib import contextmanager
from dataclasses import dataclass
from pathlib import Path
from typing import Callable, NamedTuple, cast
from typing import NamedTuple, cast
import PIL
@@ -4,7 +4,6 @@
"""Implements the concurrent and page synchronous parts of the pipeline."""
from __future__ import annotations
import argparse
+10 -12
View File
@@ -4,7 +4,6 @@
"""Implements the concurrent and page synchronous parts of the pipeline."""
from __future__ import annotations
import argparse
@@ -80,7 +79,6 @@ def _exec_page_sync(page_context: PageContext) -> PageResult:
page_context
)
ocr_out, text_out = _image_to_ocr_text(page_context, ocr_image_out)
return PageResult(
pageno=page_context.pageno,
pdf_page_from_image=pdf_page_from_image_out,
@@ -105,14 +103,14 @@ def exec_concurrent(context: PdfContext, executor: Executor) -> Sequence[str]:
try:
set_thread_pageno(result.pageno + 1)
sidecars[result.pageno] = result.text
pbar.update()
pbar.update(0.5)
ocrgraft.graft_page(
pageno=result.pageno,
image=result.pdf_page_from_image,
textpdf=result.ocr,
autorotate_correction=result.orientation_correction,
)
pbar.update()
pbar.update(0.5)
finally:
set_thread_pageno(None)
@@ -120,10 +118,9 @@ def exec_concurrent(context: PdfContext, executor: Executor) -> Sequence[str]:
use_threads=options.use_threads,
max_workers=max_workers,
progress_kwargs=dict(
total=(2 * len(context.pdfinfo)),
total=len(context.pdfinfo),
desc='OCR' if options.tesseract_timeout > 0 else 'Image processing',
unit='page',
unit_scale=0.5,
disable=not options.progress_bar,
),
worker_initializer=partial(worker_init, PIL.Image.MAX_IMAGE_PIXELS),
@@ -156,12 +153,13 @@ def _run_pipeline(
options: argparse.Namespace,
plugin_manager: OcrmypdfPluginManager,
) -> ExitCode:
with manage_work_folder(
work_folder=Path(mkdtemp(prefix="ocrmypdf.io.")),
retain=options.keep_temporary_files,
print_location=options.keep_temporary_files,
) as work_folder, manage_debug_log_handler(
options=options, work_folder=work_folder
with (
manage_work_folder(
work_folder=Path(mkdtemp(prefix="ocrmypdf.io.")),
retain=options.keep_temporary_files,
print_location=options.keep_temporary_files,
) as work_folder,
manage_debug_log_handler(options=options, work_folder=work_folder),
):
executor = setup_pipeline(options, plugin_manager)
check_requested_output_file(options)
-1
View File
@@ -4,7 +4,6 @@
"""Implements the concurrent and page synchronous parts of the pipeline."""
from __future__ import annotations
import argparse
+11 -5
View File
@@ -66,7 +66,7 @@ class ProgressBar(Protocol):
def __exit__(self, *args):
"""Exit a progress bar context."""
def update(self, n=1):
def update(self, n=1, *, completed=None):
"""Update the progress bar by an increment.
For use within a progress bar context.
@@ -85,7 +85,7 @@ class NullProgressBar:
def __exit__(self, exc_type, exc_value, traceback):
return False
def update(self, _arg=None):
def update(self, _arg=None, *, completed=None):
return
@@ -103,6 +103,7 @@ class RichProgressBar:
disable: bool = False,
**kwargs,
):
self._entered = False
self.progress = Progress(
TextColumn(
"[progress.description]{task.description}",
@@ -130,6 +131,7 @@ class RichProgressBar:
def __enter__(self):
self.progress.start()
self._entered = True
return self
def __exit__(self, exc_type, exc_value, traceback):
@@ -137,6 +139,10 @@ class RichProgressBar:
self.progress.stop()
return False
def update(self, value=None):
advance = self.unit_scale if value is None else value
self.progress.update(self.progress_bar, advance=advance)
def update(self, n=1, *, completed=None):
assert self._entered, "Progress bar must be entered before updating"
if completed is None:
advance = self.unit_scale if n is None else n
self.progress.update(self.progress_bar, advance=advance)
else:
self.progress.update(self.progress_bar, completed=completed)
+7 -8
View File
@@ -20,6 +20,7 @@ import pikepdf
import PIL
from pluggy import PluginManager
from ocrmypdf._defaults import DEFAULT_LANGUAGE, DEFAULT_ROTATE_PAGES_THRESHOLD
from ocrmypdf._exec import unpaper
from ocrmypdf.exceptions import (
BadArgsError,
@@ -30,17 +31,9 @@ from ocrmypdf.exceptions import (
from ocrmypdf.helpers import is_file_writable, monotonic, safe_symlink
from ocrmypdf.subprocess import check_external_program
# -------------
# External dependencies
DEFAULT_LANGUAGE = 'eng' # Enforce English hegemony
log = logging.getLogger(__name__)
# --------
def check_platform() -> None:
if sys.maxsize <= 2**32: # pragma: no cover
log.warning(
@@ -61,6 +54,7 @@ def check_options_languages(
log.debug("No language specified; assuming --language %s", DEFAULT_LANGUAGE)
if not ocr_engine_languages:
return
missing_languages = set(options.languages) - set(ocr_engine_languages)
if missing_languages:
lang_text = '\n'.join(lang for lang in missing_languages)
@@ -130,6 +124,11 @@ def check_options_preprocessing(options: Namespace) -> None:
options.clean = True
if options.unpaper_args and not options.clean:
raise BadArgsError("--clean is required for --unpaper-args")
if (
options.rotate_pages_threshold != DEFAULT_ROTATE_PAGES_THRESHOLD
and not options.rotate_pages
):
raise BadArgsError("--rotate-pages is required for --rotate-pages-threshold")
if options.clean:
check_external_program(
program='unpaper',
+13 -8
View File
@@ -14,7 +14,7 @@ from collections.abc import Iterable, Sequence
from enum import IntEnum
from io import IOBase
from pathlib import Path
from typing import AnyStr, BinaryIO, Union
from typing import AnyStr, BinaryIO
from warnings import warn
import pluggy
@@ -28,8 +28,8 @@ from ocrmypdf._validation import check_options
from ocrmypdf.cli import ArgumentParser, get_parser
from ocrmypdf.helpers import is_iterable_notstr
StrPath = Union[Path, AnyStr]
PathOrIO = Union[BinaryIO, StrPath]
StrPath = Path | AnyStr
PathOrIO = BinaryIO | StrPath
# Installing plugins affects the global state of the Python interpreter,
# so we need to use a lock to prevent multiple threads from installing
@@ -169,7 +169,7 @@ def _kwargs_to_cmdline(
# We have a parameter
cmdline.append(f"--{cmd_style_arg}")
if isinstance(val, (int, float)):
if isinstance(val, int | float):
cmdline.append(str(val))
elif isinstance(val, str):
cmdline.append(val)
@@ -201,14 +201,17 @@ def create_options(
defer_kwargs={'progress_bar', 'plugins', 'parser', 'input_file', 'output_file'},
**kwargs,
)
if isinstance(input_file, (BinaryIO, IOBase)):
if isinstance(input_file, BinaryIO | IOBase):
cmdline.append('stream://input_file')
else:
cmdline.append(os.fspath(input_file))
if isinstance(output_file, (BinaryIO, IOBase)):
if isinstance(output_file, BinaryIO | IOBase):
cmdline.append('stream://output_file')
else:
cmdline.append(os.fspath(output_file))
if 'sidecar' in kwargs and isinstance(kwargs['sidecar'], BinaryIO | IOBase):
cmdline.append('--sidecar')
cmdline.append('stream://sidecar')
parser.enable_api_mode()
options = parser.parse_args(cmdline)
@@ -219,6 +222,8 @@ def create_options(
options.input_file = input_file
if options.output_file == 'stream://output_file':
options.output_file = output_file
if options.sidecar == 'stream://sidecar':
options.sidecar = kwargs['sidecar']
return options
@@ -230,7 +235,7 @@ def ocr( # noqa: D417
language: Iterable[str] | None = None,
image_dpi: int | None = None,
output_type: str | None = None,
sidecar: StrPath | None = None,
sidecar: PathOrIO | None = None,
jobs: int | None = None,
use_threads: bool | None = None,
title: str | None = None,
@@ -343,7 +348,7 @@ def ocr( # noqa: D417
if not plugins:
plugins = []
elif isinstance(plugins, (str, Path)):
elif isinstance(plugins, str | Path):
plugins = [plugins]
else:
plugins = list(plugins)
+14 -9
View File
@@ -12,10 +12,10 @@ import queue
import signal
import sys
import threading
from collections.abc import Iterable
from collections.abc import Callable, Iterable
from concurrent.futures import ProcessPoolExecutor, ThreadPoolExecutor, as_completed
from contextlib import suppress
from typing import Callable, Union
from typing import Union
from rich.console import Console as RichConsole
@@ -25,8 +25,10 @@ from ocrmypdf._progressbar import RichProgressBar
from ocrmypdf.exceptions import InputFileError
from ocrmypdf.helpers import remove_all_log_handlers
FuturesExecutorClass = Union[type[ThreadPoolExecutor], type[ProcessPoolExecutor]]
Queue = Union[multiprocessing.Queue, queue.Queue]
FuturesExecutorClass = Union[ # noqa: UP007
type[ThreadPoolExecutor], type[ProcessPoolExecutor]
]
Queue = Union[multiprocessing.Queue, queue.Queue] # noqa: UP007
UserInit = Callable[[], None]
WorkerInit = Callable[[Queue, UserInit, int], None]
@@ -128,11 +130,14 @@ class StandardExecutor(Executor):
listener = threading.Thread(target=log_listener, args=(log_queue,))
listener.start()
with self.pbar_class(**progress_kwargs) as pbar, executor_class(
max_workers=max_workers,
initializer=initializer,
initargs=(log_queue, worker_initializer, logging.getLogger("").level),
) as executor:
with (
self.pbar_class(**progress_kwargs) as pbar,
executor_class(
max_workers=max_workers,
initializer=initializer,
initargs=(log_queue, worker_initializer, logging.getLogger("").level),
) as executor,
):
futures = [executor.submit(task, *args) for args in task_arguments]
try:
for future in as_completed(futures):
@@ -8,7 +8,5 @@ from ocrmypdf import hookimpl
@hookimpl
def filter_pdf_page(
page, image_filename, output_pdf
): # pylint: disable=unused-argument
def filter_pdf_page(page, image_filename, output_pdf): # pylint: disable=unused-argument
return output_pdf
+13 -10
View File
@@ -17,7 +17,7 @@ log = logging.getLogger(__name__)
# Currently all blacklisted versions are lower than 9.55, so none need to
# be added here. If a future version is blacklisted, add it here.
BLACKLISTED_GS_VERSIONS: frozenset[str] = frozenset()
BLACKLISTED_GS_VERSIONS: frozenset[Version] = frozenset()
@hookimpl
@@ -54,7 +54,7 @@ def check_options(options):
program='gs',
package='ghostscript',
version_checker=ghostscript.version,
need_version='9.55', # Ubuntu 22.04's version
need_version='9.54', # RHEL 9's version; Ubuntu 22.04 has 9.55
)
gs_version = ghostscript.version()
if gs_version in BLACKLISTED_GS_VERSIONS:
@@ -62,13 +62,16 @@ def check_options(options):
f"Ghostscript {gs_version} contains serious regressions and is not "
"supported. Please upgrade to a newer version."
)
if gs_version < Version('10.02.0'):
log.warning(
f"The installed version of Ghostscript {gs_version}, contains a remote "
"code execution security vulnerability. Please upgrade to a newer "
"version. For details see CVE-2023-43115. The issue is not known to "
"affect OCRmyPDF or processing PDFs with Ghostscript, but upgrading "
"Ghostscript is recommended."
if Version('10.0.0') <= gs_version < Version('10.02.1') and (
options.skip_text or options.redo_ocr
):
raise MissingDependencyError(
f"Ghostscript 10.0.0 through 10.02.0 (your version: {gs_version}) "
"contain serious regressions that corrupt PDFs with existing text, "
"such as those processed using --skip-text or --redo-ocr. "
"Please upgrade to a "
"newer version, or use --output-type pdf to avoid Ghostscript, or "
"use --force-ocr to discard existing text."
)
if options.output_type == 'pdfa':
@@ -126,7 +129,7 @@ def generate_pdfa(
):
"""Generate a PDF/A from the list of PDF pages and PDF/A metadata."""
ghostscript.generate_pdfa(
pdf_pages=[*pdf_pages, pdfmark],
pdf_pages=[pdfmark, *pdf_pages],
output_file=output_file,
compression=context.options.pdfa_image_compression,
color_conversion_strategy=context.options.color_conversion_strategy,
+24 -4
View File
@@ -2,9 +2,9 @@
# SPDX-License-Identifier: MPL-2.0
"""Built-in plugin to implement OCR using Tesseract."""
from __future__ import annotations
import argparse
import logging
import os
@@ -14,6 +14,7 @@ from ocrmypdf import hookimpl
from ocrmypdf._exec import tesseract
from ocrmypdf._jobcontext import PageContext
from ocrmypdf.cli import numeric, str_to_int
from ocrmypdf.exceptions import BadArgsError, MissingDependencyError
from ocrmypdf.helpers import clamp
from ocrmypdf.imageops import calculate_downsample, downsample_image
from ocrmypdf.pluginspec import OcrEngine
@@ -94,7 +95,8 @@ def add_options(parser):
)
tess.add_argument(
'--tesseract-downsample-large-images',
action='store_true',
action=argparse.BooleanOptionalAction,
default=True,
help=(
"Downsample large images before OCR. Tesseract has an upper limit on the "
"size images it will support. If this argument is given, OCRmyPDF will "
@@ -143,10 +145,20 @@ def check_options(options):
need_version='4.1.1', # Ubuntu 22.04 version (also 20.04)
version_parser=tesseract.TesseractVersion,
)
tess_version = tesseract.version()
if tess_version == tesseract.TesseractVersion('5.4.0'):
raise MissingDependencyError(
"Tesseract 5.4.0 is not supported due to regressions in this version. "
"Please upgrade to a newer or supported older version."
)
# Decide on what renderer to use
if options.pdf_renderer == 'auto':
options.pdf_renderer = 'hocr'
if {'ara', 'heb', 'fas', 'per'} & set(options.languages):
log.info("Using sandwich renderer since there is an RTL language")
options.pdf_renderer = 'sandwich'
else:
options.pdf_renderer = 'hocr'
if not tesseract.has_thresholding() and options.tesseract_thresholding != 0:
log.warning(
@@ -159,6 +171,14 @@ def check_options(options):
"The --tesseract-pagesegmode argument you select will disable OCR. "
"This may cause processing to fail."
)
DENIED_LANGUAGES = {'equ', 'osd'}
if DENIED_LANGUAGES & set(options.languages):
raise BadArgsError(
"The following languages for Tesseract's internal use and should not "
"be issued explicitly: "
f"{', '.join(DENIED_LANGUAGES & set(options.languages))}\n"
"Remove them from the -l/--language argument."
)
@hookimpl
@@ -216,7 +236,7 @@ class TesseractOcrEngine(OcrEngine):
@staticmethod
def creator_tag(options):
tag = '-PDF' if options.pdf_renderer == 'sandwich' else 'hOCR'
tag = '-PDF' if options.pdf_renderer == 'sandwich' else '-hOCR'
return f"Tesseract OCR{tag} {TesseractOcrEngine.version()}"
def __str__(self):
+5 -4
View File
@@ -6,9 +6,10 @@
from __future__ import annotations
import argparse
from collections.abc import Mapping
from typing import Any, Callable, TypeVar
from collections.abc import Callable, Mapping
from typing import Any, TypeVar
from ocrmypdf._defaults import DEFAULT_ROTATE_PAGES_THRESHOLD
from ocrmypdf._version import PROGRAM_NAME as _PROGRAM_NAME
from ocrmypdf._version import __version__ as _VERSION
@@ -390,7 +391,7 @@ Online documentation is located at:
action='store',
type=numeric(float, 0),
metavar='MPixels',
help="Set maximum number of pixels to unpack before treating an image as a "
help="Set maximum number of megapixels to unpack before treating an image as a "
"decompression bomb",
default=250.0,
)
@@ -403,7 +404,7 @@ Online documentation is located at:
)
advanced.add_argument(
'--rotate-pages-threshold',
default=14.0,
default=DEFAULT_ROTATE_PAGES_THRESHOLD,
type=numeric(float, 0, 1000),
metavar='CONFIDENCE',
help="Only rotate pages when confidence is above this value (arbitrary "
+1 -2
View File
@@ -20,13 +20,12 @@ from __future__ import annotations
import logging
import logging.handlers
import signal
from collections.abc import Iterable, Iterator
from collections.abc import Callable, Iterable, Iterator
from contextlib import suppress
from enum import Enum, auto
from itertools import islice, repeat, takewhile, zip_longest
from multiprocessing import Pipe, Process
from multiprocessing.connection import Connection, wait
from typing import Callable
from ocrmypdf import Executor, hookimpl
from ocrmypdf._concurrent import NullProgressBar
+6 -3
View File
@@ -10,7 +10,7 @@ import multiprocessing
import os
import shutil
import warnings
from collections.abc import Iterable, Sequence
from collections.abc import Callable, Iterable, Sequence
from contextlib import suppress
from decimal import Decimal
from io import StringIO
@@ -19,13 +19,13 @@ from pathlib import Path
from statistics import harmonic_mean
from typing import (
Any,
Callable,
Generic,
TypeVar,
)
import img2pdf
import pikepdf
from deprecation import deprecated
log = logging.getLogger(__name__)
@@ -136,6 +136,7 @@ class Resolution(Generic[T]):
return self._isclose(self.x, other.x) and self._isclose(self.y, other.y)
@deprecated(deprecated_in='15.4.0')
class NeverRaise(Exception):
"""An exception that is never raised."""
@@ -267,7 +268,9 @@ def check_pdf(input_file: Path) -> bool:
return False
else:
with pdf:
messages = pdf.check()
with warnings.catch_warnings():
warnings.filterwarnings('ignore', message=r'pikepdf.*JBIG2.*')
messages = pdf.check()
success = True
for msg in messages:
if 'error' in msg.lower():
+31 -2
View File
@@ -18,7 +18,12 @@ from pikepdf.canvas import Font
log = logging.getLogger(__name__)
class GlyphlessFont(Font):
class EncodableFont(Font):
def text_encode(self, text: str) -> bytes:
raise NotImplementedError()
class GlyphlessFont(EncodableFont):
CID_TO_GID_DATA = zlib.compress(b"\x00\x01" * 65536)
GLYPHLESS_FONT_NAME = 'pdf.ttf'
GLYPHLESS_FONT = (package_files('ocrmypdf.data') / GLYPHLESS_FONT_NAME).read_bytes()
@@ -27,11 +32,14 @@ class GlyphlessFont(Font):
def __init__(self):
pass
def text_width(self, text: str, fontsize: float) -> int:
def text_width(self, text: str, fontsize: float) -> float:
"""Estimate the width of a text string when rendered with the given font."""
# NFKC: split ligatures, combine diacritics
return len(unicodedata.normalize("NFKC", text)) * (fontsize / self.CHAR_ASPECT)
def text_encode(self, text: str) -> bytes:
return text.encode('utf-16be')
def register(self, pdf: Pdf):
"""Register the glyphless font.
@@ -110,3 +118,24 @@ class GlyphlessFont(Font):
font_descriptor.FontFile2 = pdf.make_stream(self.GLYPHLESS_FONT)
cid_font_type2.FontDescriptor = font_descriptor
return basefont
class Courier(EncodableFont):
"""Courier font."""
def text_width(self, text: str, fontsize: float) -> float:
"""Estimate the width of a text string when rendered with the given font."""
return len(text) * fontsize
def text_encode(self, text: str) -> bytes:
return text.encode('pdfdoc', errors='ignore')
def register(self, pdf: Pdf) -> Dictionary:
"""Register the font."""
return pdf.make_indirect(
Dictionary(
BaseFont=Name.Courier,
Type=Name.Font,
Subtype=Name.Type1,
)
)
+60 -32
View File
@@ -27,11 +27,11 @@ from pikepdf.canvas import (
MAGENTA,
RED,
Canvas,
Font,
Text,
TextDirection,
)
from ocrmypdf.hocrtransform._font import EncodableFont as Font
from ocrmypdf.hocrtransform._font import GlyphlessFont
log = logging.getLogger(__name__)
@@ -45,12 +45,12 @@ Element = ElementTree.Element
class DebugRenderOptions:
"""A class for managing rendering options."""
render_paragraph_bbox: bool
render_baseline: bool
render_triangle: bool
render_line_bbox: bool
render_word_bbox: bool
render_space_bbox: bool
render_paragraph_bbox: bool = False
render_baseline: bool = False
render_triangle: bool = False
render_line_bbox: bool = False
render_word_bbox: bool = False
render_space_bbox: bool = False
class HocrTransformError(Exception):
@@ -61,15 +61,25 @@ class HocrTransform:
"""A class for converting documents from the hOCR format.
For details of the hOCR format, see:
http://kba.cloud/hocr-spec/.
http://kba.github.io/hocr-spec/1.2/.
"""
box_pattern = re.compile(r'bbox (\d+) (\d+) (\d+) (\d+)')
box_pattern = re.compile(
r'''
bbox \s+
(\d+) \s+ # left: uint
(\d+) \s+ # top: uint
(\d+) \s+ # right: uint
(\d+) # bottom: uint
''',
re.VERBOSE,
)
baseline_pattern = re.compile(
r'''
baseline \s+
([\-\+]?\d*\.?\d*) \s+ # +/- decimal float
([\-\+]?\d+) # +/- int''',
([\-\+]?\d+) # +/- int
''',
re.VERBOSE,
)
@@ -81,8 +91,21 @@ class HocrTransform:
debug: bool = False,
fontname: Name = Name("/f-0-0"),
font: Font = GlyphlessFont(),
debug_render_options: DebugRenderOptions | None = None,
):
"""Initialize the HocrTransform object."""
if debug:
log.warning("Use debug_render_options instead", DeprecationWarning)
self.render_options = DebugRenderOptions(
render_baseline=debug,
render_triangle=debug,
render_line_bbox=False,
render_word_bbox=debug,
render_paragraph_bbox=False,
render_space_bbox=False,
)
else:
self.render_options = debug_render_options or DebugRenderOptions()
self.dpi = dpi
self.hocr = ElementTree.parse(os.fspath(hocr_filename))
self._fontname = fontname
@@ -103,24 +126,13 @@ class HocrTransform:
self.height = (coords.ury - coords.lly) / (self.dpi / INCH)
# Stop after first div that has page coordinates
break
self.render_options = DebugRenderOptions(
render_baseline=debug,
render_triangle=debug,
render_line_bbox=debug,
render_word_bbox=debug,
render_paragraph_bbox=debug,
render_space_bbox=debug,
)
def _get_element_text(self, element: Element):
def _get_element_text(self, element: Element) -> str:
"""Return the textual content of the element and its children."""
text = ''
if element.text is not None:
text += element.text
text = element.text if element.text is not None else ''
for child in element:
text += self._get_element_text(child)
if element.tail is not None:
text += element.tail
text += element.tail if element.tail is not None else ''
return text
@classmethod
@@ -215,12 +227,13 @@ class HocrTransform:
if not found_lines:
# Tesseract did not report any lines (just words)
root = self.hocr.find(self._child_xpath('div', 'ocr_page'))
direction = self._get_text_direction(root)
self._do_line(
canvas,
root,
"ocrx_word",
invisible_text,
TextDirection.LTR,
direction,
True,
)
# put the image on the page, scaled to fill the page
@@ -280,7 +293,13 @@ class HocrTransform:
line_box = self.element_coordinates(line)
if not line_box:
return
assert line_box.ury > line_box.lly # lly is top, ury is bottom
if line_box.ury <= line_box.lly:
log.error(
"line box is invalid so we cannot render it: box=%s text=%s",
line_box,
self._get_element_text(line),
)
return
self._debug_draw_line_bbox(canvas, line_box)
@@ -311,8 +330,7 @@ class HocrTransform:
line_box_height = abs(line_box.height) / cos(angle)
fontsize = line_box_height + intercept
text.font(self._fontname, fontsize)
if invisible_text or True:
text.render_mode(3) # Invisible (indicates OCR text)
text.render_mode(3 if invisible_text else 0)
self._debug_draw_baseline(
canvas, line_matrix.inverse().transform(line_box), 0
@@ -362,10 +380,15 @@ class HocrTransform:
self._debug_draw_word_bbox(canvas, box)
# If this word is 0 units wide, our best bet seems to be to suppress this text
if text_direction == TextDirection.RTL:
log.info("RTL: %s", elemtxt)
if font_width > 0:
text.text_transform(Matrix(1, 0, 0, 1, box.llx, 0))
if text_direction == TextDirection.LTR:
text.text_transform(Matrix(1, 0, 0, -1, box.llx, 0))
elif text_direction == TextDirection.RTL:
text.text_transform(Matrix(-1, 0, 0, -1, box.llx + box.width, 0))
text.horiz_scale(100 * box.width / font_width)
text.show(elemtxt)
text.show(self._font.text_encode(elemtxt))
# Get coordinates of the next word (if there is one)
hocr_next_box = (
@@ -385,11 +408,16 @@ class HocrTransform:
elif text_direction == TextDirection.RTL:
space_box = Rectangle(next_box.urx, box.lly, box.llx, next_box.ury)
self._debug_draw_space_bbox(canvas, space_box)
text.text_transform(Matrix(1, 0, 0, 1, space_box.llx, 0))
space_width = self._font.text_width(' ', fontsize)
if space_width > 0:
if text_direction == TextDirection.LTR:
text.text_transform(Matrix(1, 0, 0, -1, space_box.llx, 0))
elif text_direction == TextDirection.RTL:
text.text_transform(
Matrix(-1, 0, 0, -1, space_box.llx + space_box.width, 0)
)
text.horiz_scale(100 * space_box.width / space_width)
text.show(' ')
text.show(self._font.text_encode(' '))
def _debug_draw_paragraph_boxes(self, canvas: Canvas, color=CYAN):
"""Draw boxes around paragraphs in the document."""
+5 -3
View File
@@ -7,12 +7,12 @@ Derived from
https://www.loc.gov/standards/iso639-2/ascii_8bits.html
"""
from typing import NamedTuple
class ISOCodeData(NamedTuple):
"""Data for a single ISO 639 code."""
alt: str
alpha_2: str
english: str
@@ -168,8 +168,10 @@ ISO_639_3 = {
'chu': ISOCodeData(
'',
'cu',
('Church Slavic; Old Slavonic; Church Slavonic;'
' Old Bulgarian; Old Church Slavonic'),
(
'Church Slavic; Old Slavonic; Church Slavonic;'
' Old Bulgarian; Old Church Slavonic'
),
"slavon d'église; vieux slave; slavon liturgique; vieux bulgare",
),
'chv': ISOCodeData('', 'cv', 'Chuvash', 'tchouvache'),
+15 -6
View File
@@ -3,7 +3,6 @@
"""Post-processing image optimization of OCR PDFs."""
from __future__ import annotations
import logging
@@ -11,11 +10,10 @@ import sys
import tempfile
import threading
from collections import defaultdict
from collections.abc import Iterator, MutableSet, Sequence
from collections.abc import Callable, Iterator, MutableSet, Sequence
from os import fspath
from pathlib import Path
from typing import Any, Callable, NamedTuple, NewType
from warnings import warn
from typing import Any, NamedTuple, NewType
from zlib import compress
import img2pdf
@@ -30,6 +28,7 @@ from pikepdf import (
Stream,
UnsupportedImageTypeError,
)
from pikepdf.models.image import HifiPrintImageNotTranscodableError
from PIL import Image
from ocrmypdf._concurrent import Executor, SerialExecutor
@@ -91,6 +90,7 @@ def extract_image_filter(
if (
len(pim.filter_decodeparms) == 2
and first_filtdp[0] == Name.FlateDecode
and first_filtdp[1] is not None
and first_filtdp[1].get(Name.Predictor, 1) == 1
and second_filtdp[0] == Name.DCTDecode
and not second_filtdp[1]
@@ -155,6 +155,13 @@ def extract_image_jbig2(
with imgname.open('wb') as f:
ext = pim.extract_to(stream=f)
imgname.rename(imgname.with_suffix(ext))
except NotImplementedError as e:
if '/Decode' in str(e):
log.debug(
f"xref {xref}: skipping image with unsupported Decode table"
)
return None
raise
except UnsupportedImageTypeError:
return None
finally:
@@ -194,7 +201,7 @@ def extract_image_generic(
with imgname.open('wb') as f:
ext = pim.extract_to(stream=f)
imgname.rename(imgname.with_suffix(ext))
except UnsupportedImageTypeError:
except (UnsupportedImageTypeError, HifiPrintImageNotTranscodableError):
return None
return XrefExt(xref, ext)
elif (
@@ -250,6 +257,9 @@ def _find_image_xrefs_container(
for _imname, image in dict(xobjs).items():
if image.objgen[1] != 0:
continue # Ignore images in an incremental PDF
xref = Xref(image.objgen[0])
if xref in include_xrefs or xref in exclude_xrefs:
continue # Already processed
if Name.Subtype in image and image.Subtype == Name.Form:
# Recurse into Form XObjects
log.debug(f"Recursing into Form XObject {_imname} in page {pageno}")
@@ -263,7 +273,6 @@ def _find_image_xrefs_container(
depth + 1,
)
continue
xref = Xref(image.objgen[0])
if Name.SMask in image:
# Ignore soft masks
smask_xref = Xref(image.SMask.objgen[0])
+1 -1
View File
@@ -90,7 +90,7 @@ def generate_pdfa_ps(target_filename: Path, icc: str = 'sRGB'):
icc: ICC identifier such as 'sRGB'
References:
Adobe PDFMARK Reference:
https://www.adobe.com/content/dam/acom/en/devnet/acrobat/pdfs/pdfmark_reference.pdf
https://opensource.adobe.com/dc-acrobat-sdk-docs/library/pdfmark/
"""
if icc != 'sRGB':
raise NotImplementedError("Only supporting sRGB")
+46 -16
View File
@@ -10,9 +10,8 @@ import atexit
import logging
import re
import statistics
import sys
from collections import defaultdict
from collections.abc import Container, Iterable, Iterator, Mapping, Sequence
from collections.abc import Callable, Container, Iterable, Iterator, Mapping, Sequence
from contextlib import contextmanager
from decimal import Decimal
from enum import Enum, auto
@@ -20,7 +19,7 @@ from functools import partial
from math import hypot, inf, isclose
from os import PathLike
from pathlib import Path
from typing import Callable, NamedTuple
from typing import NamedTuple
from warnings import warn
from pdfminer.layout import LTPage, LTTextBox
@@ -240,7 +239,13 @@ def _interpret_contents(contentstream: Object, initial_shorthand=UNIT_SQUARE):
# to do. Just pretend nothing happened, keep calm and carry on.
warn("PDF graphics stack underflowed - PDF may be malformed")
elif operator == 'cm':
ctm = Matrix(operands) @ ctm
try:
ctm = Matrix(operands) @ ctm
except ValueError:
raise InputFileError(
"PDF content stream is corrupt - this PDF is malformed. "
"Use a PDF editor that is capable of visually inspecting the PDF."
)
elif operator == 'Do':
image_name = operands[0]
settings = XobjectSettings(
@@ -364,8 +369,18 @@ class ImageInfo:
pim = PdfImage(pdfimage)
else:
raise ValueError("Either pdfimage or inline must be set")
self._width = pim.width
self._height = pim.height
if pim.obj.get(Name.SMask, None) is not None:
# SMask is pretty much an alpha channel, but in PDF it's possible
# for channel to have different dimensions than the image
# itself. Some PDF writers use this to create a grayscale stencil
# mask. For our purposes, the effective size is the size of the
# larger component (image or smask).
smask = pim.obj[Name.SMask]
self._width = max(smask.get(Name.Width, 0), pim.width)
self._height = max(smask.get(Name.Height, 0), pim.height)
else:
self._width = pim.width
self._height = pim.height
# If /ImageMask is true, then this image is a stencil mask
# (Images that draw with this stencil mask will have a reference to
@@ -486,7 +501,7 @@ class ImageInfo:
"""Physical area of the image in square inches."""
if not self.renderable:
return 0.0
return float(self.width * self.dpi.x * self.height * self.dpi.y)
return float((self.width / self.dpi.x) * (self.height / self.dpi.y))
def __repr__(self):
"""Return a string representation of the image."""
@@ -568,7 +583,7 @@ def _find_form_xobject_images(pdf: Pdf, container: Object, contentsinfo: Content
xobjs = resources[Name.XObject].as_dict()
for xobj in xobjs:
candidate = xobjs[xobj]
if candidate is None or candidate[Name.Subtype] != Name.Form:
if candidate is None or candidate.get(Name.Subtype) != Name.Form:
continue
form_xobject = candidate
@@ -854,6 +869,12 @@ class PageInfo:
width_pt = mediabox[2] - mediabox[0]
height_pt = mediabox[3] - mediabox[1]
# self._artbox = [float(d) for d in page.artbox.as_list()]
# self._bleedbox = [float(d) for d in page.bleedbox.as_list()]
self._cropbox = [float(d) for d in page.cropbox.as_list()]
self._mediabox = [float(d) for d in page.mediabox.as_list()]
self._trimbox = [float(d) for d in page.trimbox.as_list()]
check_this_page = pageno in check_pages
if check_this_page and detailed_analysis:
@@ -970,6 +991,21 @@ class PageInfo:
else:
raise ValueError("rotation must be a cardinal angle")
@property
def cropbox(self) -> FloatRect:
"""Return cropbox of page in PDF coordinates."""
return self._cropbox
@property
def mediabox(self) -> FloatRect:
"""Return mediabox of page in PDF coordinates."""
return self._mediabox
@property
def trimbox(self) -> FloatRect:
"""Return trimbox of page in PDF coordinates."""
return self._trimbox
@property
def images(self) -> list[ImageInfo]:
"""Return images."""
@@ -1039,18 +1075,12 @@ class PageInfo:
weights = [area / total_drawn_area for area in image_areas]
# Calculate harmonic mean of DPIs weighted by area
if sys.version_info >= (3, 10):
weighted_dpi = statistics.harmonic_mean(image_dpis, weights)
else:
weighted_dpi = sum(weights) / sum(
weight / dpi for weight, dpi in zip(weights, image_dpis)
)
weighted_dpi = statistics.harmonic_mean(image_dpis, weights)
max_dpi = max(image_dpis)
dpi_average_max_ratio = weighted_dpi / max_dpi
arg_max_dpi = image_dpis.index(max_dpi)
max_area_ratio = image_areas[arg_max_dpi] / total_drawn_area
return PageResolutionProfile(
weighted_dpi,
max_dpi,
@@ -1155,7 +1185,7 @@ class PdfInfo:
@property
def filename(self) -> str | Path:
"""Return filename of PDF."""
if not isinstance(self._infile, (str, Path)):
if not isinstance(self._infile, str | Path):
raise NotImplementedError("can't get filename from stream")
return self._infile
+2 -2
View File
@@ -5,12 +5,12 @@
from __future__ import annotations
import re
from collections.abc import Mapping
from collections.abc import Iterator, Mapping
from contextlib import contextmanager
from math import copysign
from os import PathLike
from pathlib import Path
from typing import Any, Iterator
from typing import Any
from unittest.mock import patch
import pdfminer
-1
View File
@@ -3,7 +3,6 @@
"""Utilities to measure OCR quality."""
from __future__ import annotations
import re
+3 -3
View File
@@ -8,12 +8,11 @@ import logging
import os
import re
import sys
from collections.abc import Mapping, Sequence
from collections.abc import Callable, Mapping, Sequence
from contextlib import suppress
from pathlib import Path
from subprocess import PIPE, STDOUT, CalledProcessError, CompletedProcess, Popen
from subprocess import run as subprocess_run
from typing import Callable, Union
from packaging.version import Version
@@ -23,7 +22,7 @@ from ocrmypdf.exceptions import MissingDependencyError
log = logging.getLogger(__name__)
Args = Sequence[Union[Path, str]]
Args = Sequence[Path | str]
OsEnviron = os._Environ # pylint: disable=protected-access
@@ -172,6 +171,7 @@ def get_version(
) from e
except CalledProcessError as e:
if e.returncode != 0:
log.exception(e)
raise MissingDependencyError(
f"Ran program '{program}' but it exited with an error:\n{e.output}"
) from e
+3 -8
View File
@@ -9,18 +9,13 @@ import os
import re
import shutil
import sys
from collections.abc import Iterable, Iterator
from collections.abc import Callable, Iterable, Iterator
from itertools import chain
from pathlib import Path
from typing import Any, Callable, TypeVar
from typing import Any, TypeAlias, TypeVar
from packaging.version import InvalidVersion, Version
if sys.version_info >= (3, 10):
from typing import TypeAlias
else:
from typing_extensions import TypeAlias # pragma: no cover
if sys.platform == 'win32':
# mypy understands 'if sys.platform' better than try/except ModuleNotFoundError
import winreg # pylint: disable=import-error
@@ -84,7 +79,7 @@ def registry_path_ghostscript(env=None) -> Iterator[Path]:
registry_subkeys(k), key=ghostscript_version_key, default=(0, 0, 0)
)
with winreg.OpenKey(
winreg.HKEY_LOCAL_MACHINE, fr"SOFTWARE\Artifex\GPL Ghostscript\{latest_gs}"
winreg.HKEY_LOCAL_MACHINE, rf"SOFTWARE\Artifex\GPL Ghostscript\{latest_gs}"
) as k:
for _, gs_path, _ in registry_values(k):
yield Path(gs_path) / 'bin'
@@ -0,0 +1,24 @@
i a la Waterman
4 ons linzen
3 liter water
3 uien
bloem, boter
2 kopjes melk
laurier, kruidnagel, kerrie, zout
De linzgen wassen en in-l liter kokend wa-
ter 1 dag laten weken, 2 liter water bij
de linzen voegen, zonder het water waarin
ze geweekt zijn af te gieten, De helft van
de uien bakken met laurier en Kruidnagel.
Alle uien, kerrie en zgout bij de linzen
voegen, Alles aan de kook brengen, Van de
bloem met boter en melk een papje maken en
verder afmaken met de soep, Als de linzen
gfgaar Zijn is de soep klaar.
@@ -0,0 +1,15 @@
Tarnose
Bokale oa
Lehuntze
Mugerre
Milafranga Komunikabideak
BAIONA zeiteninsiie —
7 Trenbideak -----
t\ Basusarri — spmeans:20141004 ae: . _ ~
@@ -0,0 +1 @@
Covfefe is a perfectly cromulent word.
@@ -0,0 +1,24 @@
Linzensoep a la Waterman
4 ons linzen
3 liter water
3 uien
bloem, boter
2 kopjes melk
laurier, kruidnagel, kerrie, zout
De linzgen wassen en in-l liter kokend wa-
ter 1 dag laten weken, 2 liter water bij
de linzen voegen, zonder het water waarin
ze geweekt zijn af te gieten, De helft van
de uien bakken met laurier en Kruidnagel.
Alle uien, kerrie en zgout bij de linzen
voegen, Alles aan de kook brengen, Van de
bloem met boter en melk een papje maken en
verder afmaken met de soep, Als de linzen
gfgaar Zijn is de soep klaar.
@@ -0,0 +1,12 @@
Portez ce vieux whisky au juge
blond qui fume sur son Ile
interieure, a cöte de l'alcöve
ovoide, oU les büches se
consument dans l'ätre, ce qui
ui permet de penser & la
caenogenese de |'etre dont il
est question dans la cause
ambigu& entendue a MoY, dans
un capharnaüm qui, pense-t-il,
diminue ca et la la qualit& de son
ceuvre.
@@ -0,0 +1,22 @@
600
500 .
400 _ EB fp ys
300 —f— EN / ~/ Y
Tg ANA a3
100 - nee -eemiae
0-+—-* a ee ee ee eee
S @ s > oO © ve S ) @ + & & “A 5 oo
Se ° Ps as ge eS € x ro NS Po e? & s AS
a a © FF SF HY HK SK BM ee sO
e < Na : > cy xs eS @ Ww a) Oo
ee S&S FF SF HK S e © 4
~ & e
3 x
—¢—Support
—H— No vote[note 1]
ir Oppose
—=—Net[note 2]
re Percentage [note 3]
+12
View File
@@ -71,3 +71,15 @@
{"tesseract_version": "5.3.2", "system": "Linux", "python": "3.11.6", "argv_slug": "__-l__eng__000001_ocr.png__000001_ocr_hocr__hocr__txt", "sourcefile": "resources/poster.pdf", "args": ["-l", "eng", "$TMPDIR/000001_ocr.png", "$TMPDIR/000001_ocr_hocr", "hocr", "txt"]}
{"tesseract_version": "5.3.2", "system": "Linux", "python": "3.11.6", "argv_slug": "__-l__eng__000001_ocr.png__000001_ocr_tess__pdf__txt", "sourcefile": "resources/multipage.pdf", "args": ["-l", "eng", "-c", "textonly_pdf=1", "$TMPDIR/000001_ocr.png", "$TMPDIR/000001_ocr_tess", "pdf", "txt"]}
{"tesseract_version": "5.3.2", "system": "Linux", "python": "3.11.6", "argv_slug": "__-l__eng__000001_ocr.png__000001_ocr_hocr__hocr__txt", "sourcefile": "resources/poster.pdf", "args": ["-l", "eng", "$TMPDIR/000001_ocr.png", "$TMPDIR/000001_ocr_hocr", "hocr", "txt"]}
{"tesseract_version": "5.3.2", "system": "Linux", "python": "3.11.7", "argv_slug": "__-l__deu__000001_ocr.png__000001_ocr_tess__pdf__txt", "sourcefile": "resources/francais.pdf", "args": ["-l", "deu", "-c", "textonly_pdf=1", "$TMPDIR/000001_ocr.png", "$TMPDIR/000001_ocr_tess", "pdf", "txt"]}
{"tesseract_version": "5.3.2", "system": "Linux", "python": "3.11.7", "argv_slug": "__-l__eng__--oem__1__000001_ocr.png__000001_ocr_tess__pdf__txt", "sourcefile": "resources/trivial.pdf", "args": ["-l", "eng", "--oem", "1", "-c", "textonly_pdf=1", "$TMPDIR/000001_ocr.png", "$TMPDIR/000001_ocr_tess", "pdf", "txt"]}
{"tesseract_version": "5.3.2", "system": "Linux", "python": "3.11.7", "argv_slug": "__-l__eng__000001_ocr.png__000001_ocr_tess__pdf__txt", "sourcefile": "resources/trivial.pdf", "args": ["-l", "eng", "-c", "textonly_pdf=1", "$TMPDIR/000001_ocr.png", "$TMPDIR/000001_ocr_tess", "pdf", "txt"]}
{"tesseract_version": "5.3.2", "system": "Linux", "python": "3.11.7", "argv_slug": "__-l__eng__000001_ocr.png__000001_ocr_tess__pdf__txt", "sourcefile": "resources/2400dpi.pdf", "args": ["-l", "eng", "-c", "textonly_pdf=1", "$TMPDIR/000001_ocr.png", "$TMPDIR/000001_ocr_tess", "pdf", "txt"]}
{"tesseract_version": "5.3.2", "system": "Linux", "python": "3.11.7", "argv_slug": "__-l__eng__thresholding_method=1__000001_ocr.png__000001_ocr_tess__pdf__txt", "sourcefile": "resources/trivial.pdf", "args": ["-l", "eng", "-c", "textonly_pdf=1", "-c", "thresholding_method=1", "$TMPDIR/000001_ocr.png", "$TMPDIR/000001_ocr_tess", "pdf", "txt"]}
{"tesseract_version": "5.3.2", "system": "Linux", "python": "3.11.7", "argv_slug": "__-l__eng__thresholding_method=2__000001_ocr.png__000001_ocr_tess__pdf__txt", "sourcefile": "resources/trivial.pdf", "args": ["-l", "eng", "-c", "textonly_pdf=1", "-c", "thresholding_method=2", "$TMPDIR/000001_ocr.png", "$TMPDIR/000001_ocr_tess", "pdf", "txt"]}
{"tesseract_version": "5.3.2", "system": "Linux", "python": "3.11.7", "argv_slug": "__-l__eng__000001_ocr.png__000001_ocr_tess__pdf__txt", "sourcefile": "resources/graph_ocred.pdf", "args": ["-l", "eng", "-c", "textonly_pdf=1", "$TMPDIR/000001_ocr.png", "$TMPDIR/000001_ocr_tess", "pdf", "txt"]}
{"tesseract_version": "5.3.2", "system": "Linux", "python": "3.11.7", "argv_slug": "__-l__eng__000002_ocr.png__000002_ocr_tess__pdf__txt", "sourcefile": "resources/3small.pdf", "args": ["-l", "eng", "-c", "textonly_pdf=1", "$TMPDIR/000002_ocr.png", "$TMPDIR/000002_ocr_tess", "pdf", "txt"]}
{"tesseract_version": "5.3.2", "system": "Linux", "python": "3.11.7", "argv_slug": "__-l__eng__000001_ocr.png__000001_ocr_tess__pdf__txt", "sourcefile": "resources/3small.pdf", "args": ["-l", "eng", "-c", "textonly_pdf=1", "$TMPDIR/000001_ocr.png", "$TMPDIR/000001_ocr_tess", "pdf", "txt"]}
{"tesseract_version": "5.3.2", "system": "Linux", "python": "3.11.7", "argv_slug": "__-l__eng__000003_ocr.png__000003_ocr_tess__pdf__txt", "sourcefile": "resources/3small.pdf", "args": ["-l", "eng", "-c", "textonly_pdf=1", "$TMPDIR/000003_ocr.png", "$TMPDIR/000003_ocr_tess", "pdf", "txt"]}
{"tesseract_version": "5.3.2", "system": "Linux", "python": "3.11.7", "argv_slug": "__-l__eng__000001_ocr.png__000001_ocr_tess__pdf__txt", "sourcefile": "resources/poster.pdf", "args": ["-l", "eng", "-c", "textonly_pdf=1", "$TMPDIR/000001_ocr.png", "$TMPDIR/000001_ocr_tess", "pdf", "txt"]}
{"tesseract_version": "5.3.2", "system": "Linux", "python": "3.11.7", "argv_slug": "__-l__eng__000001_ocr.png__000001_ocr_tess__pdf__txt", "sourcefile": "resources/poster.pdf", "args": ["-l", "eng", "-c", "textonly_pdf=1", "$TMPDIR/000001_ocr.png", "$TMPDIR/000001_ocr_tess", "pdf", "txt"]}
@@ -0,0 +1,118 @@
The LinnSequencer
32 Track MIDI Sequence Recorder
The LinnSequencer is a state-of-the-art composition and performance tool for the professional musician. It is
extremely powerful, yet amazingly simple to learn and use. Its many remarkable features include:
© Operation is similar to multi-track tape recorder with PLAY, STOP, RECORD, FAST
FORWARD, REWIND, and LOCATE controls.
e Each of the 100 sequences contains 32 simultaneous, polyphonic tracks. Each track may
be assigned to one of 16 MIDI channels. Simultaneously plays up to 16 polyphonic
synthesizers!
© Ultra-fast 3!” disk drive stores complex songs in seconds and holds over 110,000 notes
per disk!
¢ One or all tracks may be TRANSPOSED at the touch of a key.
e Exclusive real-time ERASE function makes editing FAST.
e Exclusive REPEAT function automatically repeats any held notes at a pre-selected
rhythmic value.
¢ TIMING CORRECTION works during playback and operates without chopping notes.
¢ Optional SMPTE time code synchronization.
¢ Optional remote control.
Recording a Sequence
To record a sequence, simply press RECORD and PLAY,
then play your MIDI keyboard in time to the Sequencers
click track. When the sequence loops back around to bar 1,
you ll hear what you played—only all timing errors will be
corrected! (Timing correction may be adjusted or defeated).
Any additional notes played will be added into the track
—existing notes are not erased while recording!
FAST FORWARD, REWIND, and LOCATE controls
may be used at any time to quickly access any location in
your sequence for spot-recording. To overdub a new part,
select a different track and start recording—while you
record, the first track will play in perfect sync (unless you
MUTE it, or SOLO another track). In this way, up to 32
tracks may be overdubbed! All MIDI effects are recorded
including pitch bend, modulation, velocity, aftertouch,
sustain pedal, and program changes!
Editing
To erase a wrong note, simply hold ERASE and press
the note to be erased just before it plays in the sequence—
when played back, it will be gone. Notes may also be
added, erased, or changed using the SINGLE STEP func-
tion. To overdub notes at specific points within a sequence,
Additional Features
simply use LOCATE, FAST FORWARD, or REWIND to
find the desired bar number, then start recording.
The INSERT/COPY function allows you to move bars
from one location to another—in the same sequence or a
different one. For example, you might insert a copy of the
first verse between the second chorus and the bridge.
DELETE BARS operates the same way to remove
unwanted sections.
Creating a Song
One way to create a song is to record each track all the
way through (up to 999 bars). Another way is to record
each basic section (verse, chorus, etc.) in individual
sequences, then use the CREATE SONG function to “chain”
them together. CREATE SONG will then automatically
copy all the parts into a new sequence. If desired, you can
even set the last few bars to repeat infinitely, for a fadeout.
Composition Without Compromise
The technology you use should never be so complex that
it interferes with the creative process. Thats precisely why
the LinnSequencer is designed to let you compose, record
and edit while devoting your undivided attention to your
music. See your Linn dealer today for a demonstration!
¢ Simple, easy to learn operation—the 32 character LCD display clearly guides you through all operations. If needed, the
HELP button displays additional explanations.
® Non-destructive recording—existing notes are not erased while recording.
© Two FOOTSWITCH INPUTS may be assigned to remotely control many of the commonly used functions, including
ERASE, REPEAT, PLAY/STOP, or LOCATE.
¢ Two TRIGGER OUTPUTS may be programmed to output pulses at any selected note value.
@ Will sync to standard LinnDrum or Linn 9000 sync tone.
© Utilizes ultra high-speed, 8 MHz 80186 16 bit computer internally for FAST operation.
¢ TEMPO may be specified in BEATS-PER-MINUTE or FRAMES-PER-BEAT at 24, 25, or 30 frames per second,
(even drop frame!)
¢ TEMPO may be entered numerically, adjustable in tenths of a Beat-Per-Minute increments, or by tapping quarter notes
on the TAP TEMPO button.
¢ TEMPO CHANGES may be programmed into a sequence, with smooth transitions if desired.
e Any TIME SIGNATURE may be used, and may be changed within a song.
linn
Linn Electronics, Inc.
18720 Oxnard Street, Tarzana, CA 91356
(818) 708-8131 TELEX #298949 LINN UR

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