Merge branch 'current-docs'

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eikek
2023-03-12 21:25:37 +01:00
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## External Programs for Joex
- [Ghostscript](http://pages.cs.wisc.edu/~ghost/) (the `gs` command)
is used to extract/convert PDF files into images that are then fed
to ocr. It is available on most GNU/Linux distributions.
- [Ghostscript](https://www.ghostscript.com/) (the `gs` command) is
used to extract/convert PDF files into images that are then fed to
ocr. It is available on most GNU/Linux distributions.
- [Unpaper](https://github.com/Flameeyes/unpaper) is a program that
pre-processes images to yield better results when doing ocr. If this
is not installed, docspell tries without it. However, it is

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Another limit is `max-image-size` which defines the size of an image
in pixel (`width * height`) where processing is skipped.
Then [ghostscript](http://pages.cs.wisc.edu/~ghost/) is used to
extract single pages into image files and
Then [ghostscript](https://www.ghostscript.com/) is used to extract
single pages into image files and
[unpaper](https://github.com/Flameeyes/unpaper) is used to optimize
the images for ocr. Unpaper is optional, if it is not found, it is
skipped, which may be a compromise on slow machines.