[Insight-users] FFTImageFilter

[Ming Chao]

I tried to run FFTImageFilter.cxx to do an FFT of an image. The input image
is a 512x512, 24 bit thoracic CT image in jpg format. The output of the
example cxx code are the real and imaginary parts of FFT of the input image.
However, when I look at the two output images, they are just uniformly
grey/black, depending on

  intensityRescaler->SetOutputMinimum(  0  );
  intensityRescaler->SetOutputMaximum( 255 );

in the code. What did I do wrong? Many thanks,

Ming
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