Description
"We cropped the original DIV2K validation images into non-overlapping 90 \u00d7 90 pixel patches and converted them to single-channel grayscale. Each sharp patch was then convolved with a single 9 \u00d7 9 isotropic Gaussian kernel (\u03c3 = 1.0) . The set is intended for benchmarking grayscale blind deblurring, kernel-estimation networks, or as a lightweight validation subset for larger super-resolution/deblurring pipelines."
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