ImagePeriodogram

ImagePeriodogram[image] shows the squared magnitude of the discrete Fourier transform (power spectrum) of image.

ImagePeriodogram[image, n] averages power spectra of n×n partitions.

Examples

Display power spectrum:

img = ExampleData[{"TestImage", "Lena"}];
ImagePeriodogram[img]

With partition size:

ImagePeriodogram[img, 64]

Please visit the official Wolfram Language Reference for more details.