"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 \u0
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 \u00
