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435 Commits

Author SHA1 Message Date
Nulano
de62b25ed3 fix image url in "Reading from URL" example 2024-01-01 18:06:46 +01:00
Andrew Murray
d93a5ad70b
Merge pull request #7553 from bgilbert/jpeg-rgb 
Add `keep_rgb` option when saving JPEG to prevent conversion of RGB colorspace
 2024-01-01 23:55:37 +11:00
Benjamin Gilbert
a72b5963d7 Document JPEG 2000 support for writing YCbCr and reading subsampled color 
Read support for subsampled RGB and YCbCr color channels was added in
4f4c3b34f8 and not documented at the time.  Write support for YCbCr
appears to date to 61fb89ec54, the original commit.

Retain the existing language about YCbCr input conversion to RGB, even
though it's not completely correct.  OpenJPEG through 2.5.0 doesn't set
color_space in opj_read_header(), so we end up in our
OPJ_CLRSPC_UNSPECIFIED fallback path, which guesses sRGB if there's no
component subsampling.  This means we currently can't round-trip YCbCr via
JPEG 2000.  The next OpenJPEG release will fix this, so leave the docs as
is.

Also fix typo: .j2p -> .jp2.
 2023-12-26 12:52:27 -06:00
Benjamin Gilbert
a5fab5fc0b Fail if chroma subsampling selected when writing RGB JPEG 
The user presumably doesn't intend to subsample the green and blue
channels.
 2023-12-26 12:37:35 -06:00
Hugo van Kemenade
18907b5f7e
Merge pull request #7568 from radarhere/gif_transparency 2023-12-21 12:58:07 +02:00
Benjamin Gilbert
4b422db243 Add keep_rgb option to prevent RGB -> YCbCr conversion during JPEG write 
libjpeg automatically converts RGB to YCbCr by default.  Add a keep_rgb
option to disable libjpeg's automatic conversion of RGB images during
write.
 2023-12-13 18:26:35 -06:00
Benjamin Gilbert
dafaa1c512 Document JPEG streamtype option 
streamtype=1 is new in 10.2.0; the other values have existed since Git
pre-history.
 2023-12-04 06:58:37 -06:00
Andrew Murray
55c5587437 Fill identical pixels with transparency in subsequent frames 2023-11-25 19:16:32 +11:00
Andrew Murray
c855584dac Corrected "optimize" default when saving GIF images 2023-11-25 17:30:09 +11:00
Benjamin Gilbert
e572722479 Allow configuring JPEG restart marker interval on save 
libjpeg allows specifying the marker interval either in MCU blocks or in
MCU rows.  Support both, via separate parameters, rather than requiring
callers to do the math.

Co-authored-by: Andrew Murray <radarhere@users.noreply.github.com>
 2023-10-31 17:47:25 -05:00
Hugo van Kemenade
ac6eb84704 Add 'pypi' Sphinx role 2023-10-30 08:56:42 +02:00
Andrew Murray
84e148e944 Document that olefile is required for FPX and MIC formats 2023-10-30 09:02:42 +11:00
Andrew Murray
d682c18ded Use "gray" more consistently 2023-10-19 19:12:01 +11:00
Andrew Murray
76049de4ad Fixed typos in tutorial 2023-10-15 22:39:35 +02:00
Andrew Murray
a1ddb4dd27 Describe how to populate mode and size 2023-10-15 16:17:19 +11:00
Hugo van Kemenade
810f5f06c4
Merge branch 'main' into cover 2023-10-13 23:42:06 +02:00
Hugo van Kemenade
0a432541ae
Merge pull request #7392 from radarhere/eps 2023-10-05 09:27:06 -06:00
Andrew Murray
114aadd2ca Added versionadded 2023-10-01 06:13:40 +11:00
Andrew Murray
3caae280b9 Added release notes 2023-09-30 11:32:54 +10:00
Andrew Murray
1c5eab718f Include given size in table 2023-09-29 18:29:45 +10:00
Andrew Murray
40d11fa9ac Added demonstration images to tutorial 2023-09-28 08:27:56 +10:00
Andrew Murray
ffe2076fd6 Shortened property description 2023-09-13 08:03:23 +10:00
Andrew Murray
3ee8009561 Document gs_binary property 2023-09-12 22:22:42 +10:00
Andrew Murray
bfafa460e3 Allow "loop=None" when saving 2023-08-09 10:31:34 +10:00
Hugo van Kemenade
95257dff87
Merge pull request #7299 from radarhere/pdf 2023-08-04 11:43:09 +03:00
Andrew Murray
9979a822c7 Changed Image mode property to be read-only by default 2023-07-29 09:28:18 +10:00
Andrew Murray
0a0a3fc51f Added saving LA images as PDFs 2023-07-22 20:16:45 +10:00
Andrew Murray
064cd6fb83 Added more information about PPM formats 2023-07-22 18:47:55 +10:00
Grégoire Jadi
9a32c0f821
doc WAL: Add link to PIL.Image.Image.putpalette 
[ci skip]
 2023-07-05 11:26:46 +02:00
Andrew Murray
b2b05f3b83 Moved QOI from Write-Only to Read-Only 2023-06-14 18:55:19 +10:00
Andrew Murray
b39c807dde Removed rectangle example from co-ordinate system documentation 2023-05-18 22:14:40 +10:00
Andrew Murray
f8be09612d
Merge pull request #6903 from joshware/jp2k_options 
Support custom comments and PLT markers when saving JPEG2000 images
 2023-03-29 23:43:54 +11:00
Andrew Murray
598216fb46 OpenJPEG 2.4.0 or later is required for PLT markers 2023-03-29 19:25:14 +11:00
Andrew Murray
7d6ff23e1f
Renamed "add_plt" to "plt" 
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
 2023-03-28 07:32:30 +11:00
Andrew Murray
176b2a2000 Merge branch 'master' into jp2k_options 2023-03-23 08:57:20 +11:00
Andrew Murray
9e6ae98362 Dropped support for BGR;32 mode 2023-03-13 17:31:12 +11:00
mergify[bot]
264b19b266
Merge pull request #6852 from radarhere/qoi 
Added QOI reading
 2023-03-12 14:43:19 +00:00
Andrew Murray
da2083fb8d List modes that can be used when saving PDFs 2023-03-13 00:07:53 +11:00
Andrew Murray
0a6092b0e6
Use full name of format 
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
 2023-03-12 23:25:38 +11:00
Andrew Murray
2d01875e7c Added QOI reading 2023-03-09 13:34:44 +11:00
Hugo van Kemenade
7d8a08b221
Merge pull request #6958 from radarhere/codeblock 2023-02-25 13:38:29 +02:00
Andrew Murray
4777379465
Merge pull request #6961 from jvanderneutstulen/add-save-pdf-dpi-tuple 
Support saving PDF with different X and Y resolution
 2023-02-24 12:50:42 +11:00
Jasper van der Neut - Stulen
3c3d888450 Update docs/handbook/image-file-formats.rst 
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
 2023-02-23 23:26:52 +01:00
Andrew Murray
742aff3718 Replace Python code-blocks with double colons 2023-02-24 08:17:10 +11:00
Andrew Murray
acc7e0b469 Highlight code example 2023-02-24 08:00:24 +11:00
Jasper van der Neut
36bcc0a898 Support saving PDF with different X and Y resolution. 
Add a `dpi` parameter to the PDF save function, which accepts
a tuple with X and Y dpi.
This is useful for converting tiffg3 (fax) images to pdf,
which have split dpi like (204,391), (204,196) or (204,98).
 2023-02-21 11:49:05 +01:00
Andrew Murray
a55c2b42b9 If following colon, replace Python code-blocks with double colons 2023-02-18 20:34:52 +11:00
mergify[bot]
d48dca3dc4
Merge pull request #6952 from jzern/webp-quality 
Corrected documented WebP quality range
 2023-02-15 08:19:01 +00:00
James Zern
8935dad32e image-file-formats.rst: document WebP 'xmp' option 2023-02-14 17:29:06 -08:00
James Zern
06ba226e7b image-file-formats.rst: correct WebP quality range 
0-100, not 1-100
 2023-02-14 17:28:16 -08:00