断裂地形的处理及三维显示  

Dealing with Ruptured Terrain and Three-Dimensional Present

作　　者：陈天伟[1] 蓝贵文[1] 

机构地区：[1]桂林理工大学测绘地理信息学院,广西桂林541004

出　　处：《测绘与空间地理信息》2014年第11期80-81,84,共3页Geomatics & Spatial Information Technology

基　　金：国家自然科学基金(41161072);广西自然科学基金(2011GXNSFA018001);广西空间信息与测绘重点实验室资助课题(1207115-08)资助

摘　　要：网格DEM建模时应考虑地形断裂线等特殊地形。基于杨赤中插值法,提出了判断及处理地形断裂线之上和两侧的网格点、离散点位置关系的算法以及断裂地形三维显示的方法,通过实例验证了该方案的正确性和可行性。The ruptured line of terrain must be considered for structuring gridding DEM .Based on Yangchizhong′s method, the arith-metic of judging and dealing with grid point and known point which lie over ruptured line of terrain and it ′s side is brought forward , and the method of the three-dimensional present of ruptured terrain is brought forward .The correctness and feasibility of the method is validated by example .

关 键 词：DEM 插值 断裂线 矢量叉积 三维显示 

分 类 号：P232[天文地球—摄影测量与遥感]