Description: (1) 2 d signal wavelet decomposition. Choose a wavelet and wavelet decomposition level N, then the signal s to the N layer decomposition.
(2) the gaussian coefficients of the threshold quantification. For from 1 to N of each layer, choose a threshold, and this layer of the gaussian coefficients are soft threshold quantization process.
(3) 2 d signal reconstruction. According to the wavelet decomposition of the N layer and low-frequency coefficients of the modified from the first level to the N layer of the layers of high frequency coefficient calculation of 2 d signal wavelet reconstruction.
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wavelet.ppt
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