面向飞行推演的双尺度地形特征提取方法研究
|
摘要
针对飞行推演应用中的海量地形数据建模问题,提出了一种新的双尺度地形特征提取方法。该方法将地形特征划分为大尺度地形特征和小尺度地形特征,根据应用需求,动态提取原始海量地形数据中的大、小两个尺度地形特征点集,形成高精度拟合原始地形的地形特征点集,增强了大场景地形特征建模的适应性和合理性。计算证明了本方法的有效性与先进性。
A two-scale approach to extracting terrain feature for the mass terrain data modeling applied in flight rehearsal is presented. Terrain feature has been partitioned to large-scale and small-scale in this method. According to application requirement,large-scale and small-scale terrain feature point sets are dynamic extracted from original mass terrain data,which engendered the point sets that fit the original terrain feature with high resolution. The adaptability and rationality of large scene terrain feature modeling are enhanced. Experiment results validate the availability of the extraction approach.
A two-scale approach to extracting terrain feature for the mass terrain data modeling applied in flight rehearsal is presented. Terrain feature has been partitioned to large-scale and small-scale in this method. According to application requirement,large-scale and small-scale terrain feature point sets are dynamic extracted from original mass terrain data,which engendered the point sets that fit the original terrain feature with high resolution. The adaptability and rationality of large scene terrain feature modeling are enhanced. Experiment results validate the availability of the extraction approach.
引文
[1]明德烈.增强现实技术研究[D].武汉:华中科技大学图象识别与人工智能所博士论文,2002.
[2]Enrico Puppo,Larry Davis,Teng Y A.Parallel terrain triangulation[J].Intl.J.of Geographical Information Systems,1994,8(2):105-128.
[3]Bryson A E.New concepts in control theory 1959-1984[J].AIAA-84-0161.
[4]汤晓安,陈敏,孙茂印.一种新的地景模型简化与快速绘制算法[J].系统仿真学报,2002,12(4):183-185.
[5]周昆,潘志庚,石教英.基于能量优化的网格简化算法及其应用[J].软件学报,1996,7(9):526-531.
[2]Enrico Puppo,Larry Davis,Teng Y A.Parallel terrain triangulation[J].Intl.J.of Geographical Information Systems,1994,8(2):105-128.
[3]Bryson A E.New concepts in control theory 1959-1984[J].AIAA-84-0161.
[4]汤晓安,陈敏,孙茂印.一种新的地景模型简化与快速绘制算法[J].系统仿真学报,2002,12(4):183-185.
[5]周昆,潘志庚,石教英.基于能量优化的网格简化算法及其应用[J].软件学报,1996,7(9):526-531.