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Fix upsampling misalignments after resizing #63

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Fix upsampling misalignments after resizing #63

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f58e947
Fix upsampling misalignments after resizing
nandometzger May 13, 2024
c79fd1b
Update image_util.py
nandometzger May 13, 2024
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7 changes: 7 additions & 0 deletions marigold/util/image_util.py
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Original file line number Diff line number Diff line change
Expand Up @@ -80,6 +80,7 @@ def resize_max_res(
img: torch.Tensor,
max_edge_resolution: int,
resample_method: InterpolationMode = InterpolationMode.BILINEAR,
div8=False,
) -> torch.Tensor:
"""
Resize image to limit maximum edge length while keeping aspect ratio.
Expand All @@ -104,6 +105,12 @@ def resize_max_res(
new_width = int(original_width * downscale_factor)
new_height = int(original_height * downscale_factor)

# round it up or down to the next multiple of 8
# to avoid upsampling misalignments due to smaller latent dimension
if div8:
new_width = round(new_width / 8) * 8
new_height = round(new_height / 8) * 8

resized_img = resize(img, (new_height, new_width), resample_method, antialias=True)
return resized_img

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