27 lines
1.1 KiB
Plaintext
27 lines
1.1 KiB
Plaintext
===========
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OCR backend
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===========
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Mayan EDMS ships an OCR backend that uses the FLOSS engine Tesseract
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(https://github.com/tesseract-ocr/tesseract/), but it can
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use other engines. To support other engines create a wrapper that subclasses the
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``OCRBackendBase`` class defined in mayan/apps/ocr/classes. This subclass should
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expose the ``execute`` method. For an example of how the Tesseract backend
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is implemented take a look at the file ``mayan/apps/ocr/backends/tesseract.py``
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Once you create you own backend, in your local.py settings add the option
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OCR_BACKEND and point it to your new OCR backend class path.
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The default value of OCR_BACKEND is ``"ocr.backends.tesseract.Tesseract"``
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To add support to OCR more languages when using Tesseract, install the
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corresponding language file. If using a Debian based OS, this command will
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display the available language files:
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apt-cache search tesseract-ocr
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If using the Docker image, pass the environment variable MAYAN_APT_INSTALLS
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with the corresponding Tesseract language option. Example::
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-e MAYAN_APT_INSTALLS='tesseract-ocr-deu'
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