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《Science of Surveying and Mapping》 2011-01
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AR visualization of geospatial data based on silhouette matching

CHEN Ke①②,YIN Xiao①,CHEN Chen①,YANG Zhong-xiang③(①School of Civil Engineering,Hohai University,Nanjing 210098,China;②Kunming Hydropower Investigation,Design and Research Institute,CHECC,Kunming 650041,China;③Yunnan Provincial Tourism School,Kunming 650221,China)  
Augmented reality(AR) visualization of geospatial data can be seen as an important research field in geospatial visualization.Based on a well-structured terrain,the author discussed the application of AR technology in GIS,and extended the boundary of geospatial visualization.Firstly,system extracted visual silhouette from video image by using edge detected techniques,and computed horizon silhouette from DEM based on the known location of the camera.Then the transformation between geospatial coordinate and image coordinate could be conducted by optimal silhouette matching results.Finally,geospatial data was visualized by video image,and the demonstration of AR visualization was shown.AR visualization is simpler,more natural,more efficiency,and more realistic compared with traditional visualization.
【CateGory Index】: P208
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