An image processing device includes: a memory storing one or more instructions; and a processor configured to execute the one or more instructions stored in the memory to: obtain location change feature information based on values of pixels included in a first image and relative location relationships of the pixels included in the first image and pixels included in a second image; and generate the second image obtained by up-scaling the first image by k times, by performing a convolution operation on the location change feature information and a kernel, wherein k is a real number.