特征嵌入式数字高程模型研究  

The Model of Terrain Features Preserved in Grid DEM

作　　者：王春[1,2] 汤国安[2] 刘学军[2] 陶旸[2] 

机构地区：[1]滁州学院国土信息工程系,滁州市丰乐南路80号239012 [2]南京师范大学虚拟地理环境教育部重点实验室,南京市文苑路1号210046

出　　处：《武汉大学学报（信息科学版）》2009年第10期1149-1154,共6页Geomatics and Information Science of Wuhan University

基　　金：国家863计划资助项目(2006AA12Z212);安徽省自然科学基金资助项目(060412062)

摘　　要：针对常规格网DEM地形模拟的失真问题,借鉴面向对象技术,提出了"矢量化模拟,栅格化组织"方法,构建了融合地形场特征与对象特征为一体的特征嵌入式数字高程模型——F-DEM(features preserved-DEM)。A new DEM which is called features preserved Grid Digital Elevation（F-DEM） is proposed in this paper. The F-DEM is based on the ＂Vectorizing simulation and rasterizing organization＂ method and combines characteristics both of the terrain the physical objects by applying the object-oriented technology. Through abstractly describing terrain characteristics based on their morphology and seamlessly embedding terrain features information into general grid data with segmentation technology, F-DEMs not only can maintain the structural integrity of grid DEM, overcome the disadvantage of imprecision terrain description in some places containing break terrain features, but also can keep its efficiency of terrain simulation with preserved features, which is of critical significance to research high-fidelity DEMs.

关 键 词：DEM F—DEM 精度 保真度 数据模型 

分 类 号：P208[天文地球—地图制图学与地理信息工程]