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Merge pull request #6662 from radarhere/pa

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Hugo van Kemenade 2022-10-17 13:12:33 +02:00 committed by GitHub
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src/PIL/Image.py
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@ -880,7 +880,7 @@ class Image:
and the palette can be represented without a palette. and the palette can be represented without a palette.
The current version supports all possible conversions between The current version supports all possible conversions between
"L", "RGB" and "CMYK." The ``matrix`` argument only supports "L" "L", "RGB" and "CMYK". The ``matrix`` argument only supports "L"
and "RGB". and "RGB".
When translating a color image to greyscale (mode "L"), When translating a color image to greyscale (mode "L"),
@ -899,6 +899,9 @@ class Image:
this passes the operation to :py:meth:`~PIL.Image.Image.quantize`, this passes the operation to :py:meth:`~PIL.Image.Image.quantize`,
and ``dither`` and ``palette`` are ignored. and ``dither`` and ``palette`` are ignored.
When converting from "PA", if an "RGBA" palette is present, the alpha
channel from the image will be used instead of the values from the palette.
:param mode: The requested mode. See: :ref:`concept-modes`. :param mode: The requested mode. See: :ref:`concept-modes`.
:param matrix: An optional conversion matrix. If given, this :param matrix: An optional conversion matrix. If given, this
should be 4- or 12-tuple containing floating point values. should be 4- or 12-tuple containing floating point values.