It's well known that convolution in the spatial domain is equivalent to multiplication in the frequency domain. i have multiplied the Fourier transform of an image F with H. where H is the FT of a Gaussian function generated by the following code:
function H = gaussian_kernel(size, sigma) half_size = floor(size/2); [u,v]=meshgrid(-half_size:half_size,-half_size:half_size); H = exp(-(u.^2+v.^2) ./ (2 * sigma^2)); end
and the size of H is equal to the size of the image. my question is how to estimate h which is the blurring in spatial domain given that the FT of the gaussian is gaussian.