基于等高线重构误差的LOD建模及精度分析  

The modeling and analysis of accuracy for LOD model based on reconstructed error of contour lines

作　　者：王志伟[1] 朱长青[1] 

机构地区：[1]解放军信息工程大学测绘学院,郑州450052

出　　处：《测绘科学》2007年第6期52-53,共2页Science of Surveying and Mapping

摘　　要：本文运用等高线重构误差模型对细节层次模型(LOD模型)不同层次之间的精度进行研究。选取5种典型地貌区域进行试验,得到了不同地貌区域的重构误差拟合公式。根据得到的公式,可内插得到各种分辨率比率的重构误差。同时,利用逆公式,又能由重构误差确定相应的分辨率比率,为评价LOD模型精度提供了一种新的方法和思路。In this paper,the accuracy for level of detail(LOD) model in different level is studied based on the reconstructed error of contour lines.5 kinds of typical relief regions are selected and experimented.And the approximation formulae are obtained for these regions.Based on the formulae,the error with any simplifying ratio can be gained by interpolation algorithm.On the other hand,the simplifying ratio can be determined according to the asked error.The results obtained in the paper supply a new approach for evaluating the accuracy of LOD model.

关 键 词：LOD模型 精度 等高线 重构误差 

分 类 号：P282[天文地球—地图制图学与地理信息工程]