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《Science of Surveying and Mapping》 2014-01
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Study on DEM extraction by ALOS-PRISM stereo pair

CAI Qing-kong;JING Jin-bao;ZHANG Ling;LI Er-jun;College of Geoscience and Surveying Engineering,China University of Mining and Technology;College of Geology Engineering and Geomatics,Chang'an University;  
This paper extracted DEM based on advanced ALOS-PRISM high resolution stereo images. Aiming at the problem of single topography during DEM accuracy assessment,the authors paid great attention on the accuracy of DEM data under different terrain condition(mountains,plains and urban area).By contrast with 1∶50 000measured DEM,result indicated that DEM accuracy is the best in the flat region without vegetation covered,the RMSE of DEM was 4.46m,followed by city area,and the worst is mountain area,but this result was compared with other similar products,which provides a new way to create high accuracy DEM quickly.
【Fund】: 国际科技合作项目(2010DFA3290);; 国家自然科学基金项目(41101397)
【CateGory Index】: P228
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