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8d79b94b8456742e8bebfe395af9e60e6ba0051a
Commit Graph
189 Commits
Author SHA1 Message Date
James R. Barlow 8d79b94b84 cpix -> _pix 2016-06-06 23:55:23 -07:00
James R. Barlow d7f60b96c1 More leptonica functions for page manipulation 2016-06-06 23:55:23 -07:00
James R. Barlow b964999427 Update filename references from sRGB_IEC to sRGB 2016-05-10 21:58:04 -07:00
James R. Barlow 3473345ea6 Replace sRGB_IEC with MIT license compatible sRGB 
New file is from Debian package icc-profiles-free
 2016-05-10 21:48:32 -07:00
James R. Barlow 349ec5c81f Provide more helpful error message if pypdf can't merge pages 2016-04-28 14:02:12 -07:00
James R. Barlow fe14cb57c0 Fix ruffus exception output 
I found this issue in ruffus 2.6.3
https://github.com/bunbun/ruffus/issues/65
also discussed here
https://github.com/bunbun/ruffus/pull/67

ruffus 2.6.3 RethrownJobError don't follow the normal conventions and
so its exception causes problems when they cross process boundaries.
This change carefully examines the various forms of ruffus exception
objects that can appear in 2.6.3 and parses them more carefully. It
also removes any direct posting of the exception to the logger because
this triggers another serializing of the exception object, mutating it
further.
 2016-04-28 00:38:50 -07:00
James R. Barlow 507fbc01d5 Refactor _find_page_images 2016-04-27 13:13:43 -07:00
James R. Barlow 325479e5be Fix test failure: inline images with multiple image filters specified 2016-04-27 13:09:41 -07:00
James R. Barlow e926ecb8b2 Fuzzing: check for graphics stack overflow 
Very unlikely to occur
 2016-04-18 13:08:35 -07:00
James R. Barlow d0cb6c0e92 Replace private hypotenuse formula with hypot() 2016-04-18 13:07:53 -07:00
James R. Barlow 5b7c8cf5d3 Remove check for /ImageMask 
/ImageMask means the the image is a stencil mask for a grayscale or
color image. From issue #63 a user has a PDF apparently with only a
stencil mask and no other images. According to PDF spec you're supposed
to use masks to help draw other images rather than draw masks
explicitly, although drawing masks is not forbidden.

In the event that the image mask is higher resolution than the input
 image, the composite image should be drawn at the highest DPI to a
ccurately capture the effect of the mask. It looks like the right to
 do is take masks into account rather than ignore them (a holdover
from earlier, less robust versions), or don't treat it different.
 2016-04-14 14:24:33 -07:00
James R. Barlow e877d37ac8 --rotate-pages: Only apply rotation if we're reasonable confident 
Take the threshold from tesseract's default value for -psm 1.
 2016-04-14 13:49:44 -07:00
James R. Barlow 8ddd67d1e2 Check encoding of inline images 2016-03-24 15:11:10 -07:00
James R. Barlow 2d3b1ebf6e Simplify DPI calculation with algebraic derivation 
Needs testing
 2016-03-20 12:35:41 -07:00
James R. Barlow 94a3e447cc Add otsu threshold to leptonica 2016-03-12 00:09:20 -08:00
James R. Barlow 322085933b unpaper: fix check for missing and old versions, add test case 2016-03-10 15:37:09 -08:00
James R. Barlow 8c877482bd Fix leptonica initializers 2016-03-02 06:26:25 -08:00
James R. Barlow b17d589e84 Don't set -sOutputICCProfile 
Ghostscript dev advised against. It appears that this is for
creating target for a device that colors in a particular format.
 2016-03-02 06:25:34 -08:00
James R. Barlow 3d0e8c9629 Provide our own sRGB profile instead of Ghostscript's 2016-03-01 01:27:40 -08:00
James R. Barlow 0360f078de get_postscript_icc_path: don't check the same path multiple times 2016-02-29 12:45:58 -08:00
James R. Barlow 6a380ee99c Fix temporary file placed in wrong folder 2016-02-27 00:51:47 -08:00
James R. Barlow 3c90bd96a9 Remove extraneous debug print() messages 2016-02-27 00:50:58 -08:00
James R. Barlow 570bbe9a05 Add comments and remove debugging, improve inline handling 
Squashed commits:
[bfff3c9] pageinfo, have a main()
 2016-02-27 00:18:36 -08:00
James R. Barlow 5cc3adb39a Add support for inline images 2016-02-27 00:18:36 -08:00
James R. Barlow 3957a0606c Compute image pixel density without performing rectangle intersection (+5 squashed commits) 
Squashed commits:
[0e27904] Partially implement DPI calculation with rotation of the image

Fixes test suite
[a64f662] pageinfo: all tests pass
[c5b811a] Fix typos
[cdd2286] Can now find inline images for efficiently
[60dde8d] First cut at implementing intelligent DPI detection based on content stream

Broke many of the test cases
 2016-02-27 00:18:36 -08:00
James R. Barlow dad2198394 Log information about detected page orientations in a summary line 2016-02-26 01:07:59 -08:00
James R. Barlow e40fdc502d Always dump stack trace for unexpected errors 2016-02-26 01:06:59 -08:00
James R. Barlow d446fe5922 Fix "too few characters" reported as error by tesseract -psm 0 2016-02-21 08:53:34 -08:00
James R. Barlow 8246cc0538 Gracefully recover from tesseract's failure to process very large images 
And test cases to check this
 2016-02-20 04:53:23 -08:00
James R. Barlow ecc0ac9b19 Fix error on --tesseract-timeout timing out 2016-02-20 03:13:23 -08:00
James R. Barlow ea4e6bf67d leptonica: serialization tweaks, memory handling 2016-02-20 02:54:53 -08:00
James R. Barlow 46c204f533 Fix leptonica pickling 2016-02-20 02:35:34 -08:00
James R. Barlow 71fbda8bf6 Adjust page orientation parsing to deal with change in Tess 3.04.01 2016-02-20 01:32:56 -08:00
James R. Barlow 9b79b4a7c8 Leptonica: documentation, helper functions 2016-02-20 01:20:06 -08:00
James R. Barlow c04cc853d7 leptonica: remove special PNM handling 
We no longer use PNM as an intermediate format, so there's no need to
handle leptonica's PNM quirks.
 2016-02-19 15:13:14 -08:00
James R. Barlow dd41e70ccc leptonica: nit 2016-02-19 15:11:48 -08:00
James R. Barlow ab0e5fa425 Improve error checking for tesseract -psm 0 (orientation) errors 2016-02-19 03:58:39 -08:00
James R. Barlow f3b0434a87 Improve ability to capture error messages from tesseract on a crash 2016-02-19 03:48:49 -08:00
James R. Barlow 3b98a1a04b Fix KeyError on unexpected tess output 2016-02-17 06:05:27 -08:00
James R. Barlow d4ef3411e0 Suppress --pdf-renderer tesseract warning in Docker image 
Since the corrected font is provided in the Docker image, there's no
reason to show the warning.
 2016-02-17 01:03:20 -08:00
James R. Barlow 60b2eb1455 Fix JPEG DPI: Pillow expects dpi=(x,y) 2016-02-16 07:29:20 -08:00
James R. Barlow ab3c1988c1 Work around Leptonica < 1.72 bug that breaks Travis 2016-02-16 07:03:50 -08:00
James R. Barlow ee5223eea8 Travis again: are invalid correlation measurements a use-after-free? 
Try explicitly casting the value to a float.
 2016-02-16 06:09:48 -08:00
James R. Barlow 71e493a810 Fix case of JPEG missing DPI field 2016-02-16 05:29:32 -08:00
James R. Barlow d70ce61cfd Travis: maybe it's just the missing __init__.py? 2016-02-16 05:09:12 -08:00
James R. Barlow 8cd84afac8 Revert "Try moving leptonica build script, playing with wheels a bit" 
This reverts commit ec2c6c312b.
 2016-02-16 05:04:20 -08:00
James R. Barlow ec2c6c312b Try moving leptonica build script, playing with wheels a bit 2016-02-16 04:05:58 -08:00
James R. Barlow c50e3f1329 Complain about older tesseracts that don't have sharp2.ttf installed 2016-02-15 16:43:41 -08:00
James R. Barlow 7c691c21ab Fix image layer rotation for pages with nonzero crop boxes 2016-02-10 17:48:33 -08:00
James R. Barlow 4ec51729d8 Partial fix for images not anchored to (0, 0) 2016-02-10 17:14:48 -08:00