Complete MATLAB program. Do not use built-in function.

Suppse we do not know the power spectra of the noise S_n and the un-degraded image S_f. This routine employs the degradation function H_d and a constant K=S_n/S_f to filter the given noisy image.

Code:

Function Im=wiener_filter(NoisyIm,H,K)

assert_grayscale_image(NoisyIm);

assert_uint8_image(NoisyIm);

Im=?

Im=uint8(Im);