Blur and Edge Detect your Fourier Transforms September 21st, 2009
Patrick Stein

I have now added convolutions to my FFT Paint application. Here, I started with the following image (again, magnitude on the left and phase on the right):

conv_orig_m  conv_orig_p

From there, I took the Fourier Transform:

conv_pre_m  conv_pre_p

Then, I did a horizontal Sobel operator on it to get this:

conv_post_m  conv_post_p

From there, I did the Inverse Fourier Transform to obtain this:

conv_final_m  conv_final_p