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《Acta Geodaetica et Cartographica Sinica》 2007-01
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A Method Improving Registration Accuracy Progressively for InSAR Complex Image

PENG Shu-rong1,2,WANG Yao-nan1,LIU Guo-cai(1.College of Electric and Information Engineering of Hunan University,Changsha 410082,China;2.College of Electric and Information Engineering of Changsha University of Science and Technology,Changsha 410075,China)  
Registration accuracy of InSAR is a key index.To obtain better measuring results,a method is proposed to improve registration accuracy progressively for InSAR complex image.The procedure includes calculating the approximate offsets by using software EnView,pixel level's primary match and sub-pixel level's precise co-registration.The primary matching algorithm based polygon structure and edge extraction enhances matching rate greatly.Considering that the presented algorithms are based on the altitude map and ignore the integration,the algorithm by using global relaxation matching on account of the phase is proposed in the last matching step to reduce the matching errors and improve matching precision.The experiment verified the nicer validity of this algorithm.
【Fund】: 国家自然科学基金项目(60375001);; 教育部博士点基金项目(20030532004);; 湖南大学科学基金重点项目(521101875)
【CateGory Index】: P225.1
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