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Update release notes and readme

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This commit is contained in:
James R. Barlow
2016-07-29 15:25:16 -07:00
parent f385772d21
commit 48213c9c3f
2 changed files with 19 additions and 5 deletions
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README.rst
+17 -4
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@@ -190,7 +190,14 @@ The command line program should now be available:
Installing on Ubuntu 14.04 LTS
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Installing on Ubuntu 14.04 LTS (trusty) is more difficult than other options, because of certain bugs in Python package installation.
Installing on Ubuntu 14.04 LTS (trusty) is more difficult than some other options, because of bugs in Python package installation.
Add new "apt" repositories needed for backports of Ghostscript 9.16 and libav-11, which supports unpaper 6.1. This will replace Ghostscript on your system.
.. code-block:: bash
sudo add-apt-repository ppa:vshn/ghostscript -y
sudo add-apt-repository ppa:heyarje/libav-11 -y
Update apt-get:
@@ -207,10 +214,10 @@ Install system dependencies:
zlib1g-dev \
libjpeg-dev \
libffi-dev \
libavformat56 libavcodec56 libavutil54 \
ghostscript \
tesseract-ocr \
qpdf \
unpaper \
python3-pip \
python3-pil \
python3-pytest \
@@ -223,7 +230,7 @@ into your system Python, which could interfere with other programs):
sudo pip3 install ocrmypdf
If you wish to install OCRmyPDF to a virtual environment to isolate system Python from modified, you can
If you wish to install OCRmyPDF to a virtual environment to isolate the system Python, you can
follow these steps. This includes a workaround `for a known, unresolved issue in Ubuntu 14.04's ensurepip
package <http://www.thefourtheye.in/2014/12/Python-venv-problem-with-ensurepip-in-Ubuntu.html>`_:
@@ -238,7 +245,13 @@ package <http://www.thefourtheye.in/2014/12/Python-venv-problem-with-ensurepip-i
source venv-ocrmypdf/bin/activate
pip install ocrmypdf
Ubuntu 14.04 only installs ``unpaper`` version 0.4.2, which is not supported by OCRmyPDF because it is produces invalid output. This program is an optional dependency, and provides page deskewing and cleaning. See `Dockerfile <Dockerfile>`_ for an example of how to building unpaper 6.1 from source. If you choose to install unpaper later, OCRmyPDF will use the foremost version on the system PATH.
These installation instructions omit the optional dependency ``unpaper``, which is only available at version 0.4.2 in Ubuntu 14.04. The author could not find a backport of ``unpaper`` and is not motivated to figure how to set up a Ubuntu PPA to distribute it. You can create a .deb package to do the job of installing unpaper 6.1 (for x86 64-bit only):
.. code-block:: bash
wget -q https://dl.dropboxusercontent.com/u/28971240/unpaper_6.1-1.deb -O unpaper_6.1-1.deb
sudo dpkg -i packages/unpaper_6.1-1.deb
Installing on Windows
~~~~~~~~~~~~~~~~~~~~~
RELEASE_NOTES.rst
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@@ -5,7 +5,8 @@ RELEASE NOTES
v4.2 (planned):
===============
- Improved support for PDFs containing images with "non-square" pixel aspect ratios, such as 200x100 DPI.
- ocrmypdf will now try to convert single image files to PDFs if they are provided as input (#15)
- Improved support for PDFs containing images with "non-square" pixel aspect ratios, such as 200x100 DPI
- ``--force-ocr`` rasterizes pages even if they contain no images
+ supports users who want to use OCRmyPDF to reconstruct text information in PDFs with damaged Unicode maps (copy and paste text does not match displayed text)