I need to zero-pad the image for a better reconstruction but according to my project details, I will be given a Fourier-transformed image so can someone tell me how to pad the image in such a situation. I tried padding the Fourier transformed image and then took a Fourier transform of that padded array and then replaced the image part with the original Fourier transform. Pardon me if that doesn't make sense. But my solution definitely did not work. What to do?