雷达图像快速无损压缩算法  

Fast and Lossless Compression Algorithm for Radar Image

作　　者：李天伟[1] 贾传荧[2] 郭模灿 李春鑫[1] 

机构地区：[1]大连舰艇学院,大连116018 [2]大连海事大学,大连116026 [3]海军九○二厂,大连200083

出　　处：《船舶工程》2005年第2期20-23,共4页Ship Engineering

摘　　要：针对船用航行数据记录仪雷达图像无损压缩问题,提出了将整数小波和改进SPECK相融合的算法.该算法利用整数小波对图像进行变换,进而采用引入了Hash表和综合匹配法的改进SPECK进行编码.雷达图像无损压缩仿真结果表明,该算法不仅提高压缩速度,而且提高了压缩比.In view of the problem of lossless compression for VDR radar image, an algorithm combining the integer wavelet transform with improved SPECK is presented. With the algorithm, the image is first transformed by integer wavelet, then improved SPECK, in which synthetic matching and Hash table are brought, is used to code. The simulation of radar image lossless compression shows that both compression speed and rate are improved.

关 键 词：图像处理 整数小波变换 SPECK 无损压缩 匹配 

分 类 号：TN911.73[电子电信—通信与信息系统]