DIV2KRK Dataset

Using the validation set (100 images) from the widely used DIV2K dataset, we blurred and subsampled each image with a different, randomly generated kernel. Kernels were 11x11 anisotropic gaussians with random lengths λ1, λ2∼U(0.6, 5) independently distributed for each axis, rotated by a random angle θ∼U[−π, π].

采用广泛应用的DIV2K数据集的验证集（100张图像），我们对每张图像进行了模糊和子采样处理，并使用随机生成的不同核进行操作。核为11x11各向异性高斯函数，长度λ1, λ2服从[0.6, 5]区间上的均匀分布，每个轴独立分配，并以[−π, π]区间的随机角度θ进行旋转。