MULTI-BANK WAVELET TRANSFORM METHOD AND APPLICATION FOR IMAGE AND VIDEO COMPRESSION CODING AND DECODING

摘要

The present invention provides a multi-bank wavelet transform method for image and video compression coding and decoding. The r-bank discrete biothonormal wavelet with the bank number r greater than or equal to 16 is applied to perform forward or inverse transform on image compression or decompression. Above-mentioned multi-bank wavelet transform method can be applied to computer software, DSP software, ASIC chip or FPGA chip. The present invention provides a new multi-bank wavelet transform method. It has the advantages that images haven't blocking effect after wavelet transform, and avoids complicated iterative calculation in wavelet transform. And such multi-bank wavelet transform can be translated into the product of wavelet transform and block transform. Wavelet transform and block transform are integrated dynamically，thus enabling seamless downward compatibility of new and old technology, that is, the old technology is a standard subset of the new one. The images or videos coded with the old technology can be decoded smoothly using the new technology, which is favorable to parallel calculation.