[Numpy-discussion] FFT's & IFFT's on images

[Andrew Straw]

Mike Sarahan wrote:
> I agree that the components are very small, and in a numeric sense, I
> wouldn't worry at all about them, but the image result is simply noise,
> albeit periodic-looking noise.

Fernando Perez and John Hunter have written a nice FFT image denoising
example:
http://matplotlib.svn.sourceforge.net/viewvc/matplotlib/trunk/py4science/examples/fft_imdenoise.py?view=markup

with documentation, even:
http://matplotlib.svn.sourceforge.net/viewvc/matplotlib/trunk/py4science/workbook/fft_imdenoise.tex?view=markup