periodogram - calculate the periodogram (the modulus squared of a Fourier Transform) of an image.
output = periodogram(image)
- input image (can be real or Fourier).
- periodogram (the modulus squared of a Fourier Transform)
For real input image, Fourier transformed is first calculated. Next, a modulus square of the FT is calculated and periodogram is placed in the output image such that the term |F(0,0,0)|^2) is located at (int[n/2], int[n/2], int[n/2]) in 3D, (int[n/2], int[n/2]) in 2D, and at int[n/2] in 1D, i.e., at the center of the real image.
Author / Maintainer
Pawel A. Penczek
- category 1
- category 2
- works for most people, has been tested; test cases/examples available.
None. It is perfect.