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improve performance of {invert, solarize}_image_tensor #6819

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Merged
merged 6 commits into from
Oct 24, 2022
Merged

improve performance of {invert, solarize}_image_tensor #6819

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f1a248f
improve performance of invert_image_tensor
pmeier Oct 24, 2022
0cc6cdd
cleanup
pmeier Oct 24, 2022
34c075c
lint
pmeier Oct 24, 2022
7adfeb5
more cleanup
pmeier Oct 24, 2022
d8af69b
Merge branch 'main' into perf/invert
pmeier Oct 24, 2022
f8f68d7
use new invert in solarize
pmeier Oct 24, 2022
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9 changes: 8 additions & 1 deletion torchvision/prototype/transforms/functional/_color.py
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Original file line number Diff line number Diff line change
Expand Up @@ -435,7 +435,14 @@ def equalize(inpt: features.InputTypeJIT) -> features.InputTypeJIT:
return equalize_image_pil(inpt)


invert_image_tensor = _FT.invert
def invert_image_tensor(image: torch.Tensor):
num_channels, height, width = get_dimensions_image_tensor(image)
if num_channels not in (1, 3):
raise TypeError(f"Input image tensor can have 1 or 3 channels, but found {num_channels}")

return 1.0 - image if image.is_floating_point() else image.bitwise_not()


invert_image_pil = _FP.invert


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