Prepare training data for NTIRE SR Challenge Download the intended dataset DIV2K, FLK2K, PEX2K Run the following Matlab scripts (specify the path): HR_to_LR_BICUBIC.m: bicubic LR images x2, x3, x4, x8 HR_to_LR_BLURY.m: blury LR images x3 HR_to_LR_NOISE.m: Noisy LR images x3-noise 30% 「®️」