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test_image_to_string_with_image_type[jpeg2000] failure with tesseract >4.1.x

See original GitHub issue

pytesseract.pytesseract.TesseractError: (1, 'Error in pixReadStreamJp2k: function not present Error in pixReadStream: jp2: no pix returned Error in pixRead: pix not read Error during processing.')

pytesseract 0.3.10 tesseract 5.1.0 pillow 9.0.1 openjpeg2 2.4.0 pytest 7.1.0 python 3.10.2

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Created 2 years ago
Comments:8

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2reactions

mandreecommented, Mar 30, 2022

Same issue here. I debugged it, and in my case the root cause was determined as follows:

tesseract 5.1.0 (on FreeBSD 13.0 amd64) failed to process a JPEG2000 file, because:
tesseract uses leptonica for reading images; and
leptonica was compiled without OPENJPEG option, omitting the libopenjp2 library

The remedy for me was to recompile leptonica with OpenJPEG 2.4.0 support.

However for py-pytesseract, it should skip the test if there are indications that tesseract does not support JPEG2000.

1reaction

int3lcommented, Mar 16, 2022

At the moment, I don’t have tesseract 5.1.0 around + Arch instance in order to test if it is pytesseract related or tesseract specific issue. When I have time, I will try to boot up a container with that setup in order to check.

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