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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
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docs Document JPEG 2000 support for writing YCbCr and reading subsampled color 2023-12-26 12:52:27 -06:00
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README.md

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Pillow

Python Imaging Library (Fork)

Pillow is the friendly PIL fork by Jeffrey A. Clark (Alex) and contributors. PIL is the Python Imaging Library by Fredrik Lundh and Contributors. As of 2019, Pillow development is supported by Tidelift.

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Overview

The Python Imaging Library adds image processing capabilities to your Python interpreter.

This library provides extensive file format support, an efficient internal representation, and fairly powerful image processing capabilities.

The core image library is designed for fast access to data stored in a few basic pixel formats. It should provide a solid foundation for a general image processing tool.

More Information

Report a Vulnerability

To report a security vulnerability, please follow the procedure described in the Tidelift security policy.