%0 Journal Article
%T High Accuracy Surface Modeling and Spatial Real-time Simulation<br>高精度曲面建模与实时空间模拟
%A YUE Tian-xiang
%A DU Zheng-ping
%A SONG Dun-jiang
%A <br>岳天祥
%A 杜正平
%A 宋敦江
%J 中国图象图形学报
%D 2007
%I 
%X HASM5 is developed in the context that the current generation of geographical information system(GIS) is difficult to realize real-time simulation.HASM5 is developed on the basis of QR decomposition and the spatial real-time simulation is realized by dynamically adding information points and reducing information points.The QR decomposition method is used to transform the matrix of HASM4 into two algebra equations including two coefficient matrixes that are respectively one upper triangular matrix and one lower triangular matrix.Numerical tests show that the spatial real-time simulation by dynamically adding information points only needs to conduct the matrix decomposition to the matrix formed by adding information points.The spatial real-time simulation by dynamically reducing information points only needs to calculate sub-matrix of the matrix before reducing information points.
%K high accuracy surface modelling
%K spatial real-time simulation
%K dynamically adding information points
%K dynamically reducing information points
%K numerical test<br>高精度曲面建模
%K 实时空间模拟
%K 动态加点
%K 动态减点
%K 数值实验
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=28ECA36AC46A2775&yid=A732AF04DDA03BB3&vid=59906B3B2830C2C5&iid=9CF7A0430CBB2DFD&sid=C690871E0010130A&eid=27B74BA4EDC40A8D&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=2&reference_num=15