摘要
JPEG 2000和JPEG-LS是目前应用比较广泛的两种压缩算法。本文介绍了JPEG 2000和JPEG-LS的编码流程、实现方法,通过试验分别分析了遥感影像在不同压缩比下的失真程度大小以及不同的失真类型。结果表明:在相同的中低倍压缩比条件下,JPEG 2000和JPEG-LS在影像细节信息保持方面效果非常接近;在高倍压缩比下,JPEG 2000和JPEG-LS压缩后影像分别出现了明显的模糊失真和间歇性失真现象。本文分析结论对相关算法的使用和改进有一定的借鉴意义。
JPEG 2000 and JPEG-LS are two kinds of compression algorithms which are widely used at present. This paper mainly introduces the coding process and implementation of JPEG 2000 and JPEG-LS. The degree of distortion and different distortion types of the two algorithms at different compression ratios are analyzed by the experiment. The results show that: Under the same medium and low compression ratio,JPEG 2000 and JPEG-LS have very close effects on image detail information maintenance. Under the high compression ratio,the images have obvious blurred distortion and intermittent distortion separately after JPEG 2000 compression and JPEG-LS compression. This paper provides some reference for the use and improvement of the algorithm.
作者
林瑶瑶
艾波
高小明
LIN Yaoyao;AI Bo;GAO Xiaoming(College of Geomatics,Shandong University of Science and Technology,Qingdao 266590,China;Land Satellite Remote Sensing Application Center,MNR,Beijing 100048,China;Ji′nan Research Institute of Geotechnical Investigation&Surveying,Ji′nan 250013,China)
出处
《测绘与空间地理信息》
2020年第2期147-149,152,共4页
Geomatics & Spatial Information Technology
