文章基本信息

标题：Simplified Structure of Integer Lifting Wavelet Filter Banks for Lossless Image Compression
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作者：Yanjuan Li ; Dong Chen ; Honge Ren 等
期刊名称：International Journal of Signal Processing, Image Processing and Pattern Recognition
印刷版ISSN：2005-4254
出版年度：2016
卷号：9
期号：7
页码：147-156
DOI：10.14257/ijsip.2016.9.7.14
出版社：SERSC
摘要：In this paper, a simplified structure of integer lifting wavelet filter banks for lossless image compression is proposed by shifting and merging the scaling factors of the row and the column wavelet transforms. It is implemented by reducing the numbers of scaling factors and considering the scaling lifting. The numbers of scaling factors of the 2-D wavelet transform can be reduced by shifting and merging operation, and then the computing speed can be improved. Furthermore, the scaling lifting of simplified structure can be used to reduce the computing errors and get more accurate results. Experiments show that the simplified integer lifting structure results in lesser computational steps than the standard integer lifting structure and therefore improves the speed of the image compression. Besides, using the new lossless image compression system based on simplified integer lifting wavelet, the lower bit- rates are obtained.
关键词：integer lifting; lossless image compression; scaling factor; simplified structure; ; wavelet filter bank