Correct image by scaling pixels#1
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cmbruns merged 1 commit intocmbruns:cmbruns/grayscale-16-bit-qimagefrom Dec 13, 2021
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Dec 13, 2021
| data = im.tobytes("raw", "BGRA") | ||
| format = qt_format.Format_ARGB32 | ||
| elif im.mode == "I;16" and hasattr(qt_format, "Format_Grayscale16"): # Qt 5.13+ | ||
| im = im.point(lambda i: i * 255) |
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On reflection I believe the correct multiplier here should be 256, not 255. So the maximum intensity would be 255*256, which still falls within the unsigned 16-bit integer range.
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You're right. I've corrected my commit in your PR.
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Fixes python-pillow#5856 (comment) using your suggestion from python-pillow#5856 (comment)
I've also modified the test to check that the image contents are similar after roundtripping through ImageQt.