A NEW DISCRETE WAVELET TRANSFORM FAST ALGORITHM WITH RATIONAL DILATION FACTOR
Huiguang Li, Yan Li, CHANG-PIN SUN, Xiaoli Li · International Journal of Wavelets Multiresolution and Information Processing · 2008
While in the process of decomposition of the Mallat discrete wavelet transform (DWT) fast algorithm, the algorithm has a drawback, that is, there is frequency distortion in the high frequency subband. In this paper, a new algorithm of decomposition and reconstruction in the discrete wavelet is presented. The algorithm can solve the frequency distortion in the high frequency subband in the process of decimation in each level. The simulation of numerical value example tests the validity of the algorithm.