And the preparation of two-dimensional DCT is defined analytically discrete Walsh matrix or a self-defined- Hadamard transform function. For a given two-dimensional discrete Fourier transform in Matlab image, and displays its spectrum centered available Matlab function comes experiment.  respectively two-dimensional DCT transform for a given image DCT2 comes with Matlab () and idct2 (), and displays an image thereon in the form of matrix transform coefficients.

20161218二维DCT与沃尔什-哈达玛变换\demo.m
..................................\harbour.tif
..................................\mydct2.m
..................................\mydctmtx.m
..................................\myhadamard.m
..................................\myidct2.m
..................................\myiwht2.m
..................................\mywht2.m
20161218二维DCT与沃尔什-哈达玛变换

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