摘要
从小波变换入手,简要介绍了基于小波变换的图像压缩基本原理和基本过程,在此基础上对分层小波树集合分割算法、优化截断点的嵌入块编码算法以及嵌入式小波零树图像编码3种基于小波变换的图像压缩改进算法的优缺点进行了分析,最后着重对嵌入式小波零树图像编码算法进行了论述,并针对嵌入式小波零树图像编码算法的缺陷提出了相应的改进方法.通过由浅入深的分析,使人们对基于小波变换的图像压缩改进算法及其性能有了初步的了解,以期在图像压缩技术领域对大家有所启迪.
In this paper,starting with wavelet transform,the basic principle and basic process of image compression based on wavelet transform are briefly introduced.On this basis,the advantages and disadvantages of three kinds of image compression algorithms such as the segmentation algorithm of the hierarchical wavelet tree,the embedded block coding algorithm,and the embedded wavelet zero tree image coding based on wavelet transform are analyzed.Finally,the embedded wavelet zerotree image coding algorithm is discussed in detail.In addition,the corresponding improvement method for embedded wavelet zerotree image coding algorithm is proposed.Through the analysis of the deep and shallow,people have a preliminary understanding of the image compression algorithm based on wavelet transform and its performance,in order to inspire everyone in the field of image compression technology.
出处
《西安文理学院学报（自然科学版）》
2017年第4期30-33,共4页
Journal of Xi’an University(Natural Science Edition)
基金
2016年安徽省高校优秀青年人才支持计划重点项目(gxyq ZD2016530)
安徽省"计算机应用专业教学团队构建"项目(2013jxtd065)
2016年安徽省高等学校省级质量工程项目精品资源共享课程项目(2016gxk099)
2016年池州职业技术学院质量工程项目(2016jyxm07)
关键词
小波
小波变换
图像压缩
EZW编码
wavelet
wavelet transform
image compression
EZW coding
