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Merge pull request #5352 from radarhere/quantize_documentation

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Hugo van Kemenade 2021-03-26 15:25:14 +02:00 committed by GitHub
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2 changed files with 10 additions and 3 deletions
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7
docs/reference/Image.rst
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@ -486,15 +486,16 @@ Used to specify the quantization method to use for the :meth:`~Image.quantize` m
.. data:: MEDIANCUT .. data:: MEDIANCUT
Median cut Median cut. Default method, except for RGBA images. This method does not support
RGBA images.
.. data:: MAXCOVERAGE .. data:: MAXCOVERAGE
Maximum coverage Maximum coverage. This method does not support RGBA images.
.. data:: FASTOCTREE .. data:: FASTOCTREE
Fast octree Fast octree. Default method for RGBA images.
.. data:: LIBIMAGEQUANT .. data:: LIBIMAGEQUANT

6
src/PIL/Image.py
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@ -1059,6 +1059,12 @@ class Image:
:data:`LIBIMAGEQUANT` (libimagequant; check support using :data:`LIBIMAGEQUANT` (libimagequant; check support using
:py:func:`PIL.features.check_feature` :py:func:`PIL.features.check_feature`
with ``feature="libimagequant"``). with ``feature="libimagequant"``).
By default, :data:`MEDIANCUT` will be used.
The exception to this is RGBA images. :data:`MEDIANCUT` and
:data:`MAXCOVERAGE` do not support RGBA images, so
:data:`FASTOCTREE` is used by default instead.
:param kmeans: Integer :param kmeans: Integer
:param palette: Quantize to the palette of given :param palette: Quantize to the palette of given
:py:class:`PIL.Image.Image`. :py:class:`PIL.Image.Image`.