fix(ssim): correct SSIMLoss input scaling by multiplying with 255 #12
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SSIMLoss previously passed [0,1]-scaled tensors directly into _ssim_map_pth. However, the SSIM calculation inside uses c1 and c2 constants defined with 255 scaling, leading to a mismatch.
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SSIMLoss previously passed [0,1]-scaled tensors directly into _ssim_map_pth. However, the SSIM calculation inside uses c1 and c2 constants defined with 255 scaling, leading to a mismatch.