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Support JPEG2000 RGBA palettes

Open radarhere opened this issue 1 year ago • 0 comments

Resolves #8255

Page 7 of https://cdn.standards.iteh.ai/samples/36628/10393e6ddb5c4dbc9513ae89230d97f9/ISO-IEC-15444-1-2000-Cor-2-2002.pdf explains that npc is

Number of components created by the application of the palette

When there are four components, this PR changes the palette to be RGBA.

Requires a test image from https://github.com/python-pillow/test-images/pull/5

radarhere avatar Jul 24 '24 09:07 radarhere