In order to improve compression ratio, the combination of lossy and losslesscoding method is used in video coding systems.
为了提高压缩率，视频编码技术中一般会采用有损和无损压缩编码相结合的方式。
2
IWT achieves great success in the losslesscoding and compression, but its efficiency in the loss compression is far lower than the traditional DWT.
IWT在无损编码与压缩中获得了很大成功，但在有损压缩效率上远低于传统的DWT。
3
Experimental results of this algorithm indicate losslesscoding rates better than those achieved by BWT-based compression algorithms using integer codes.