Obtaining the original image back after applying fourier tranform

I am looking for some help on how to obtain an image back after applying t fourier transform. i have an image which i apply the fft2 function to, which gives me a complex 2 by 2 matrix, now how do i get to see the original image again?!

the inverse function doesn't seem to work, and eventually i hope to apply some filter to the fourier transform and see how it affects the original image!
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