摘要
本文实现了一个基于小波变换的静止图象压缩系统。包括以下工作：用引入了小波包思想的小波变换将图象分解到一个完备的多分辨的空间上去，对系数做标量量化，利用小波变换的方向性进行扫描和游程编码，之后对低频部分作ＡＤＰＣＭ编码，最后，系统的输出是嵌入式的。实验结果表明，对于静止图象的压缩。
In this paper,we present a still image compression system based on wavelet transform,which includes following parts Wavelet transform with better frequency resolution is applied to map image into a complete multiresolution space The coefficients are scalar quantitized,scanned and runlength coded in the proper direction Adaptive arithmetic coding,Fix length HUFFMAN coding and ADPCM methods are employed Finally,the resultiing bitstream is output in an embedded fashion Experiments suggest that our system is superior to JPEG to a certain degree
出处
《宇航学报》
EI
CAS
CSCD
北大核心
1997年第1期67-75,共9页
Journal of Astronautics
基金
国家八六三计划
国家教委博士点基金
国家教委优秀青年教师基金
国家教委跨世纪人才基金
关键词
图象压缩
小波变换
遥感图象
Inage Compression Wavelet Transform Adaptive Arithmetic Coding Embedded Coding
