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Correct color channels in upscale using array slicing #1181

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Oct 20, 2022
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Correct color channels in upscale using array slicing #1181

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8 changes: 6 additions & 2 deletions ldm/invoke/restoration/realesrgan.py
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Original file line number Diff line number Diff line change
Expand Up @@ -60,14 +60,18 @@ def process(self, image, strength: float, seed: str = None, upsampler_scale: int
print(
f'>> Real-ESRGAN Upscaling seed:{seed} : scale:{upsampler_scale}x'
)

# REALSRGAN expects a BGR np array; make array and flip channels
bgr_image_array = np.array(image, dtype=np.uint8)[...,::-1]

output, _ = upsampler.enhance(
np.array(image, dtype=np.uint8),
bgr_image_array,
outscale=upsampler_scale,
alpha_upsampler='realesrgan',
)

res = Image.fromarray(output)
# Flip the channels back to RGB
res = Image.fromarray(output[...,::-1])

if strength < 1.0:
# Resize the image to the new image if the sizes have changed
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