摘要
遥感影像的内容十分复杂，分辨率较高，用于电视图像或其它视频信号的无损压缩方法很难使遥感影像的无损压缩达到２倍的压缩比。本文提出一种遥感影像的无损压缩方法，用该方法可使大部分遥感影像达到２倍以上的压缩比。最后还对这部分影像用小波分解理论进行分析。
The contents of remote sensing images are very complicated and with high resolution. So the lossless compression ratio(CR) of these images is hardly higher than 2 using methods suitable for TV images and other video signals. This paper provides a lossless compression scheme by which the CR can be greater than 2 for most parts of these images. Finally, on the basis of analysis using wavelet transform, we have got guantitative characteristics of these images.
出处
《测绘学报》
EI
CSCD
北大核心
1996年第4期262-265,共4页
Acta Geodaetica et Cartographica Sinica
关键词
图像压缩
信源编码
波变换
遥感
Image compression, Source coding, Wavelet transformation
