A SRTM-DEM-controlled Ortho-rectification Method for Optical Satellite Remote Sensing Stereo Images

Acta Geodaetica et Cartographica Sinica

WANG Taoyang¹  ZHANG Guo¹  ZHANG Hao²  JIANG Yonghua³ 

[1] ;Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China;State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China;

关键词: global mapping;    stereo images pair;    independent model;    DEM block adjustment;    image orientation accuracy;   

DOI  :  10.11947/j.AGCS.2016.20150358

来源: DOAJ

【 摘 要 】

In response to the problem of lacking of control base in the project of global mapping, a method to ortho-rectify satellite remote sensing images is proposed, which uses SRTM-DEM as control base. First, stereo images pairs which compose of optical images are adjusted by block adjustment of free networks and DEMs are extracted.Then SRTM-DEM is used as control base, the single DEM is the cell model and DEM block adjustment of independent models is implemented to get orientation parameters of each model.Finally, the geometric model parameters of each stereo image pair are corrected to ortho-rectify the nadir image. The ZY-3 images in Xianning and Jiangxi are taken as test data and the results show that the planar orientation accuracy of the pan nadir image is improved from 12.93 pixels to 6.85 pixels.

【 授权许可】

Unknown