how can i do 2d dft for image without using built-in function(fft2) and get matrix values for the separated magnitude and phase of an image after 2d dft?

i need to do 2d dft for an image using normal formula and get matrix values for separated mag and phase.

Answer 1

[Steve Eddins]

F = fft2(f);
F_mag = abs(F);
F_phase = angle(F);