A new semi-empirical topographic correction method for optical remote sensing imagery in rugged terrain
On the basic of detailed analysis of several classic topographic correction methods, authors proposed a new semi-empirical method according to the theory of SCS, C and Minnaert correction, which accounts for diffuse irradiance from C correction and the non-Lambertian reflectance behavior of a surface from Minnaert correction. In addition, it has the advantages of SCS method which preserve the geotropic nature of trees (vertical growth)regardless of terrain, view, and illumination angles. The new method was tested by ETM imagery acquired on April 30th, 2000 in the Miyun county of Beijing, China. We analyzed comparatively the correction results through visual analysis of corrected images, statistical analysis of mean and standard deviation and the correlation analysis between radiance and the illumination angle. The results show that the correlation between the illumination angle and radiance corrected by the new method decreases obviously and its spectral characteristics are preserved perfectly. It was concluded that the new method should be considered as a good method for topographic correction of optical remote sensing imagery in rugged terrain.
topographic correction C correction Minnaert correction SCS correction rugged terrain
Liming Wang Qinjun Wang
Lab of Digital Earth Sciences,Chinese Academy of Sciences,P.O.Box 9718,20A Datun Road,Chaoyang District,Beijing,,China,100101
国际会议
北京
英文
1-8
2009-09-09（万方平台首次上网日期，不代表论文的发表时间）