Realize image processing, to achieve the fast Fourier transformation of a grayscale image, and determine the distribution of its transform coefficients (amplitude), while achieving a discrete cosine transform of an image do, to select the appropriate threshold value of the DCT coefficients to the DCT inverse transform

2\dct_main.m
.\fft_main.m
.\idct_main.m
.\lena.bmp
.\Untitled.asv
.\wdct2.m
.\wfft2.asv
.\wfft2.m
.\widct2.m
.\wo_fft2.asv
2

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