卫星影像反立体改正算法比较探究  

Comparison of terrain reversal effect correction methods in satellite imagery

作　　者：朱昕宇[1] 孙明伟[1] 王树根[1] 余磊[1] 郭清[1] 

机构地区：[1]武汉大学遥感信息工程学院,武汉430079

出　　处：《华中师范大学学报（自然科学版）》2015年第5期805-810,共6页Journal of Central China Normal University：Natural Sciences

基　　金：国家973计划项目(2012CB719904);国家自然科学基金项目(41301519)

摘　　要：太阳同步卫星成像时的光照方向与人类视觉习惯相反,导致影像中出现地形反转的感知现象,即反立体现象.现有的一些方法能够改正这种严重误导影像解译的现象,但针对算法的系统性比较研究较为缺乏.以SPOT-5与WorldView-2卫星影像为例,从反立体改正程度、空间细节的保持、光谱特性的保持方面选取几种代表性算法进行比较,进而归纳出各个算法的特点及适用情况,为实际应用打下基础.Most sun-synchronous satellites acquire images with a SE illumination source, which goes against human visual habits. Hence, when observing such images, the ter rain reversal effect occurs particularly in large-relief regions. Many methods have been developed to solve the problem which is seriously misleading imagery interpretation. However, no systematic comparisons have been made. Experiments were conducted on SPOT-5 and WorldView-2 satellite images, and comparisons of several typical algorithms were made through three aspects： correction extent, preservation of spatial details, and preservation of spectral characteristics. The feature and application situation of each approach were further concluded for practical application.

关 键 词：反立体 卫星影像 空间细节 光谱特性 

分 类 号：TP751.1[自动化与计算机技术—检测技术与自动化装置]