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计算机应用 2005
Application of lifting M-channels wavelet transform in image compression
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Abstract:
According to the characteristic of the frequency domain being subdivided by the M-channels wavelet transform, the lefting decomposition of M-channels wavelet transform was carried out via the lifting scheme. That lefting decomposition is not exclusive, so that the transform is possessed the needed property by it. And a new algorithm of M-channels fast lifting wavelet transform was presented. The composed algorithm was given as long as the decomposed algorithm was given. Furthermore, wavelet transform from integer to integer could be achieved when the operation result was taken to the proximal integer. An application example and its simulations indicate that the algorithm is effective for image compression.