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《Journal of Beijing Normal University(Natural Science)》 2011-01
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ESTIMATING GEOMETRICAL PARAMETERS OF ISOLATED TREES BY COMBINING PHOTOGRAPHY AND POINT QUADRAT METHOD(Ⅰ):THREE DIMENSIONAL RECONSTRUCTION OF CANOPY

ZOU Jie1,2) YAN Guangjian2)(1) Key Laboratory of Data Mining and Information Sharing of Ministry of Education,Spatial Information Research Center of Fujian Province,Fuzhou University,350002,Fuzhou,China;2) School of Geography and Remote Sensing Science,State Key Laboratory of Remote Sensing Science,Beijing Normal University,100875,Beijing,China)  
A method to reconstruct a precise 3D canopy model was presented by combining photography,3D voxel model and ray tracing.Data showed that canopy background and weather condition were critical for canopy image classification.Precision of camera exterior orientation elements was affected by precision of control points,but by number of control points only slightly.Arbitrary choice of size of voxel and pixel zone introduced vital errors,reasonable and harmonious choice of such sizes was critical for construction of voxel-based canopy model.Compared to voxel size,pixel zone size was even more important for such model constructions.
【Fund】: 国家自然科学基金资助项目(41001203 30972299);; 国家“863”基金资助项目(2007AA10Z227);; 国家“973”计划资助项目(2007CB714402) 国家“973”计划前期研究专项资助项目(2009CB426310);; 遥感科学国家重点实验室自由探索基金资助项目
【CateGory Index】: TP391.41
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【Co-citations】
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7 CHENG Dianqin~1,JIANG Yanjun~2(1.Department of Computer Science,Ankang College,Ankang,725000;2.School of Computer Science-Engineering,Xi'an University of Technology,Xi'an 710048 Shaanxi,China);Research and Implementation of Web GIS Based on OGC Web Services Specifications[J];Journal of Ankang Teachers College;2006-04
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