多光谱扫描仪(MSS)卫星遥感图象原始数据的信息保持型压缩编码

Lossless Coding for the Original Data of Multi-Spectral Scanner(MSS)Satellite Remote Sensing Pictures

电视图象(隔行扫描)编码中采用的预测器：x^0=1/2x1′+1/4(x3′+x4′)，同样适用于多光谱扫描仪(MSS)卫星遥感图象原始数据(逐行扫描)的信息保持型压缩编码．采用此预测器和简单的熵编码(A3码)，在两类计算机上用软件实现了典型MSS数据的信息保持型的编码／解码，压缩比略大于2．本文是课题报告及后续工作的简要报导，所提出的算法现JPEG建议中有关部分相似．

The predictor:x0=1/2x1+1/4(x3'+x4'),for the coding of television pictures (interlaced),is also suitable lor the coding of original data of multi-spectral scanner (MSS) satellite remote sensing pictures (non-interlaced).By using such a predictor and simple entropy coding (As code),the lossless coding/decoding is realized on two kinds of computers by softwares for typical MSS pictures,with compression ratio slightly greater than two.This paper is a brief report of a project and related works following it,wh le the proposed algorithm is very similar to the corresponding one proposed by JPEG.