This does the following :
- Display the image of the function
f(x,y) = sin(x + y) + sin(3*x + y) wrapped in pixpipe.Image2D
- Display the real component of the fourier transform output from
pixpipe.ForwardFourierImageFilter
- Display the imaginary component of the fourier transform output from
pixpipe.ForwardFourierImageFilter
- Display the real component of the inverse fourier transform output from
pixpipe.InverseFourierImageFilter