James R. Barlow
44b4afa534
Begin conversion from page splititng to page markers
2018-04-23 22:57:50 -07:00
James R. Barlow
775be3933c
Cherrypick merge_pages unification
2018-04-20 23:08:15 -07:00
James R. Barlow
df87e21c85
Add support for PDF/A-3
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No ability to attach files however
2018-04-20 00:06:55 -07:00
Hugo and jbarlow83
d761d80750
Use more standard __version__ rather than PILLOW_VERSION ( #257 )
2018-04-19 23:35:32 -07:00
James R. Barlow
8052019dde
optimize: fix reporting of jbig2 groups
2018-04-19 01:54:44 -07:00
James R. Barlow
a3d8950088
optimize: Don't save JPEGs if larger
2018-04-19 01:25:49 -07:00
James R. Barlow
004f5d3bf1
optimize: further improve decodeparms handling
2018-04-18 15:52:25 -07:00
James R. Barlow
f5d308a156
optimize: refactor tricky /Filter and /DecodeParms handling
2018-04-18 15:30:21 -07:00
James R. Barlow
3869996758
optimize: jbig2 error
2018-04-18 01:36:38 -07:00
James R. Barlow
cdb2107c4e
optimize: jbigs2 fix
2018-04-18 01:31:35 -07:00
James R. Barlow
4db2b3413b
optimize: more robustness
2018-04-18 01:25:34 -07:00
James R. Barlow
b2f31bec79
Make optimize a lot safer
2018-04-18 00:20:06 -07:00
James R. Barlow
78f9f4a266
Be more defensive about accessing
2018-04-18 00:11:39 -07:00
James R. Barlow
ad6087c342
optimize: more fixes
2018-04-17 23:58:10 -07:00
James R. Barlow
0d6ef430de
optimize: fix "length not defined"
2018-04-17 23:38:00 -07:00
James R. Barlow
a5942209e8
optimize: fix error on missing /Filter
2018-04-17 23:27:56 -07:00
James R. Barlow
9a60694cfc
optimize: ccitt header fixes
...
Changed to match TIFF spec's use of unsigned types, eliminated check for
/Columns.
There is some complex behavior for /Width != /Columns and
(/Width, /Columns) mod 8 != 0
that is not described well in the PDF spec.
2018-04-17 23:27:25 -07:00
James R. Barlow
4bf13f4737
optimize: be less chatty
2018-04-17 23:25:41 -07:00
James R. Barlow
9e89b75186
Merge v6.1.5
2018-04-17 22:51:13 -07:00
James R. Barlow
0b10db91be
Fix regression: Disable Ghostscript JPEG passthrough entirely
2018-04-17 17:00:24 -07:00
James R. Barlow
1a516b2af9
Fix regression: time stamp test suite failures
2018-04-17 16:59:21 -07:00
James R. Barlow
076363d78e
Disable JPEG passthrough for Ghostscript 9.23
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Seems to corrupt JPEGs involved in image masks?
2018-04-17 16:31:03 -07:00
James R. Barlow
5fde214290
Update notes for v6.1.5
2018-04-17 15:23:35 -07:00
James R. Barlow
a620724d6a
Fix PDF/A validation failure due to timezone being omitted from /ModDate
2018-04-17 15:16:48 -07:00
James R. Barlow
640b953ec7
Fix PDF/A validation failure due to timezone being omitted from /ModDate
2018-04-17 14:55:32 -07:00
James R. Barlow
a009ca7597
Disable JPEG passthrough for Ghostscript 9.23
...
Seems to corrupt JPEGs involved in image masks?
2018-04-17 13:54:34 -07:00
James R. Barlow
7368399f8b
Clarify license of two test files - https://github.com/jbarlow83/OCRmyPDF/issues/254
2018-04-17 11:56:36 -07:00
James R. Barlow
c974aec934
Search for image masks too
2018-04-17 02:06:08 -07:00
James R. Barlow
3033f03f64
Iterate images with pikepdf / fix mono PNG corruption
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To work around PNG corruption problem in PyMuPDF for monochrome images,
extract and save monochrome CCITT with synthetic TIFF header.
Works better but currently skips /ImageMask due to qpdf
implementation, which affects many files.
2018-04-17 01:50:37 -07:00
James R. Barlow
72723e0bb5
optimize: be quieter
2018-04-16 18:06:02 -07:00
James R. Barlow
2fb6ab3939
Trap writePNG error
2018-04-16 17:29:10 -07:00
James R. Barlow
25c1c160b8
Move optimize to new file
2018-04-16 17:22:06 -07:00
James R. Barlow
7e92895471
Parallelize pngquant
2018-04-16 12:37:51 -07:00
James R. Barlow
d291d48991
PNG palette: parse PDF string from leptonica instead
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Seems better to accept whatever leptonica rather than make detailed
assumptions about how it encodes the palette.
Experimented with setting FlateDecode on the palette but it seems to
expand it.
2018-04-16 12:16:13 -07:00
James R. Barlow
0e6b8042b0
Implement PNG palettization
2018-04-16 11:18:52 -07:00
James R. Barlow
34c78a892a
Fix list table for tests/resources
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[ci skip]
2018-04-15 23:52:19 -07:00
James R. Barlow
9d28879505
Update Ubuntu 14.04 instructions
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Closes #252
2018-04-14 17:30:33 -07:00
James R. Barlow
2482296e2b
hocr: avoid division by zero
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Issue #253 - PDF that produces the error is not available, but if font_width
is zero, chances are the text is nonprinting characters, so suppress it.
2018-04-14 17:24:21 -07:00
James R. Barlow
f755fb76ee
Try pngquant
2018-04-14 01:37:14 -07:00
James R. Barlow
c61b5dcb62
Fix PDF/A validation error from setting /Predictor 0
2018-04-14 01:36:46 -07:00
James R. Barlow
fae893b9d9
Reinstate transcoding of PNG
2018-04-14 00:19:24 -07:00
James R. Barlow
10aadefd6a
Document return codes
2018-04-14 00:18:58 -07:00
James R. Barlow
e75b6280fd
Try reading compressed data directly to see if Leptonica will add predictor
...
Turns out it does not transcode at all in this case, so probably going
to revert to transcoding PNG -> PNG. However if pngquant or similar is
done, this API will still be useful.
2018-04-13 23:55:23 -07:00
James R. Barlow
8c4023165a
Release L_COMP_DATA properly
2018-04-13 23:53:41 -07:00
James R. Barlow
b7d403f106
Deprecate Pix.read() behaving as an open function
2018-04-13 23:52:46 -07:00
James R. Barlow
b069de0caa
Use Leptonica to rewrite all PNGs with predictor
...
Leptonica does a better job of encoding them than Ghostscript, about -15%.
For a test file 450k worth of
PNGs was reduced to 388k with no loss of quality.
2018-04-13 16:35:50 -07:00
James R. Barlow
136da74bfa
Update branch with v6.1.4
2018-04-13 12:57:21 -07:00
James R. Barlow
7fc897e6dc
Fix NameError 'ghostscript'
2018-04-12 21:24:05 -07:00
James R. Barlow
9b731d63b8
Set Ghostscript -sColorConversionStrategy the way old/new versions expect
2018-04-12 16:28:48 -07:00
James R. Barlow
10aa59f674
v6.1.4 fix test suite regression with Ghostscript 9.23
2018-04-12 15:16:54 -07:00
James R. Barlow
Hugoandjbarlow83