Contrast and Analyze of Several Image Compression Algorithms Performance Based on DWT
Qihu Li, Guohua Wu · Video Engineering · 2009
EZW,SPITH,EBCOT and SPECK are some common coding algorithms for image compression based on DWT.According to the simulation results of the image compression performance,we analyzed and contrasted each other,especially in the case of compression ratio,PNSR(peak signal noise ratio) and the complexities of coding;We also compared these algorithms to the algorithms based on DCT,and the conclusion shows that the algorithms based on DWT are better than those based on DCT in the case of low bit rate.Finally,we analyzed the deficiency of the algorithms of the EZW and SPIHT,and put forward some solutions to improve their performance,and the solutions are proved to be valid theoretically.