Introduction - If you have any usage issues, please Google them yourself
(1) obtained two-dimensional monochrome digital image of the Fourier transform and inverse transform, with the exception of the effect of contrast images, but also given to the center as the origin of the image displayed Fourier transform spectrum, phase spectrum, and verify that two-dimensional Fourier transform nature. (2) Fourier Transform, the calculation of the distribution of image energy spectrum range: Draw contains images of energy 92.0, 94.6, 96.4, 98.0 and 99.5 of the circle region.