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new setting: PAPERLESS_OCR_PAGES

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Jonas Winkler
2020-11-22 12:54:08 +01:00
parent 0e301e4563
commit ae198f0767
6 changed files with 54 additions and 5 deletions
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3
docs/changelog.rst
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@@ -26,6 +26,9 @@ next
* Much better admin for mail rule editing.
* New setting ``PAPERLESS_OCR_PAGES`` limits the tesseract parser
to the first n pages of scanned documents.
paperless-ng 0.9.1
##################

10
docs/configuration.rst
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@@ -184,6 +184,16 @@ PAPERLESS_TIME_ZONE=<timezone>
PAPERLESS_OCR_PAGES=<num>
Tells paperless to use only the specified amount of pages for OCR. Documents
with less than the specified amount of pages get OCR'ed completely.
Specifying 1 here will only use the first page.
Defaults to 0, which disables this feature and always uses all pages.
PAPERLESS_OCR_LANGUAGE=<lang>
Customize the default language that tesseract will attempt to use when
parsing documents. The default language is used whenever

26
docs/setup.rst
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@@ -358,4 +358,30 @@ management commands as below.
7. Start paperless.
Considerations for less powerful devices
########################################
Paperless runs on Raspberry Pi. However, some things are rather slow on the Pi and
configuring some options in paperless can help improve performance immensely:
* Consider setting ``PAPERLESS_OCR_PAGES`` to 1, so that paperless will only OCR
the first page of your documents.
* ``PAPERLESS_TASK_WORKERS`` and ``PAPERLESS_THREADS_PER_WORKER`` are configured
to use all cores. The Raspberry Pi models 3 and up have 4 cores, meaning that
paperless will use 2 workers and 2 threads per worker. This may result in
slugish response times during consumption, so you might want to lower these
settings (example: 2 workers and 1 thread to always have some computing power
left for other tasks).
* Keep ``PAPERLESS_OCR_ALWAYS`` at its default value 'false' and consider OCR'ing
your documents before feeding them into paperless. Some scanners are able to
do this!
* Lower ``PAPERLESS_CONVERT_DENSITY`` from its default value 300 to 200. This
will still result in rather accurate OCR, but will decrease consumption time
by quite a bit.
* Set ``PAPERLESS_OPTIMIZE_THUMBNAILS`` to 'false' if you want faster consumption
times. Thumbnails will be about 20% larger.
For details, refer to :ref:`configuration`.
.. _redis: https://redis.io/