Package: liblept4
Version: 1.72-3
Severity: normal
Dear Maintainer,
liblept4 fails to read any JPEG 2000 file (Jessie) or uses
an inefficient temporary file (1.72-3).
Example output with tesseract + liblept4 1.71-*:
$ tesseract test.jp2 test -l deu-frak hocr
Tesseract Open Source OCR Engine v3.05.00dev with Leptonica
Warning in fgetJp2kResolution: image resolution not found
tesseract: /home/nirgal/openjpeg2-2.1.0/src/lib/openjp2/cio.c:553:
opj_stream_get_number_byte_left: Assertion `p_stream->m_user_data_length
>= (OPJ_UINT64)p_stream->m_byte_offset' failed.
Example output with tesseract + liblept4 1.72-*:
$ tesseract test.jp2 test -l deu-frak hocr
Tesseract Open Source OCR Engine v3.05.00dev with Leptonica
Warning in pixReadMemJp2k: work-around: writing to a temp file
...
Example output with tesseract + liblept4 (fixed):
$ tesseract test.jp2 test -l deu-frak hocr
Tesseract Open Source OCR Engine v3.05.00dev with Leptonica
Info in pixReadStreamJp2k: w = 10032, h = 7280, bps = 8, spp = 1
...
Here is the patch which fixes the problem:
https://github.com/stweil/leptonica/commit/c4386b5d09dbdd1135078a218c167976b3a35eda
-- System Information:
Debian Release: 8.2
APT prefers testing-updates
APT policy: (500, 'testing-updates'), (500,
'testing-proposed-updates'), (500, 'stable-updates'), (500,
'proposed-updates'), (500, 'oldstable-updates'), (500,
'oldstable-proposed-updates'), (500, 'testing'), (500, 'stable'), (500,
'oldstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 4.2.0-0.bpo.1-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages liblept4 depends on:
ii libc62.19-18+deb8u1
ii libgif4 4.1.6-11
ii libjpeg62-turbo 1:1.3.1-12
ii libopenjp2-7 2.1.0-2.1
ii libpng12-0 1.2.50-2+deb8u1
ii libtiff5 4.0.3-12.3
ii libwebp5 0.4.3-1.3
ii zlib1g 1:1.2.8.dfsg-2+b1
liblept4 recommends no packages.
liblept4 suggests no packages.
-- no debconf information
