Add preserve_tone option to autocontrast#5350
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radarhere merged 16 commits intopython-pillow:masterfrom Mar 29, 2021
Merged
Add preserve_tone option to autocontrast#5350radarhere merged 16 commits intopython-pillow:masterfrom
radarhere merged 16 commits intopython-pillow:masterfrom
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Co-authored-by: Andrew Murray <[email protected]>
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Co-authored-by: Andrew Murray <[email protected]>
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If I remove the change to preserve tone, the tests still pass. I understand that these tests came from #1246 (comment), but they aren't going to prevent us accidentally undoing this change in the future. I've created elejke#2 to add a test to guard against regression, by checking that |
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Good idea, thank you @radarhere |
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Changes proposed in this pull request:
As already have been discussed here autocontrast function changes the tone of the image because of the usage of separate histograms for each channel.
@broxeph, @wiredfool
Example:
