Illustrate of 2D discrete wavelet transformation u
2016-08-23
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Though MATLAB provides functions for 2D discrete wavelet transformation (DWT), several related details have not been clearly shown. Consequently, one has to waste time to find such details. Considering this, I will show simple illustrations of 2D DWT and two MATLAB programs will be implemented. One program is ts_dwt2.m, which is used for critically sampled 2D DWT, and the involved MATLAB functions are dwt2 and idwt2. The other program is ts_swt2.m, which is employed for undecimated 2D DWT, and the related MATLAB functions are swt2 and iswt2.
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