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add omitted ImageFilter types

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nulano 2020-07-09 20:23:19 +02:00 committed by Andrew Murray
parent f6b4c3f741
commit 885ca9bb03
2 changed files with 27 additions and 1 deletions
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26
docs/reference/ImageFilter.rst
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@ -66,3 +66,29 @@ image enhancement filters:
.. autoclass:: PIL.ImageFilter.ModeFilter
:members:
.. class:: Filter
An abstract mixin used for filtering images
(for use with :py:meth:`~PIL.Image.Image.filter`)
Implementors must provide the following method:
.. method:: filter(self, image)
Applies a filter to a single-band image, or a single band of an image.
:returns: A filtered copy of the image.
.. class:: MultibandFilter
An abstract mixin used for filtering multi-band images
(for use with :py:meth:`~PIL.Image.Image.filter`)
Implementors must provide the following method:
.. method:: filter(self, image)
Applies a filter to a multi-band image.
:returns: A filtered copy of the image.

2
docs/releasenotes/4.3.0.rst
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@ -124,7 +124,7 @@ This release contains several performance improvements:
* ``Image.transpose`` has been accelerated 15% or more by using a cache
friendly algorithm.
* ImageFilters based on Kernel convolution are significantly faster
due to the new MultibandFilter feature.
due to the new :py:class:`~PIL.ImageFilter.MultibandFilter` feature.
* All memory allocation for images is now done in blocks, rather than
falling back to an allocation for each scan line for images larger
than the block size.