非地形要素与DTM叠加的方法初探

本文在区域数字地形模型(DTM)的基础上,引入多边形覆盖的概念,研究了由数字化仪从地图上获取的各种非地形信息的矢量数据到DTM规则阵列的网格数据的转换,提供了从转换到求交、配准、叠加的系列算法设计,从而实现了由DTM提供的地形要素与多边形的非地形要素间的匹配覆盖。

Explorations in Registration Between DTM and Non--Topographic Features

This paper introduces the concept of polygon overlap on the basis of Aerial Digital Te-rrain Model(DTM), and investigates the conversion between the vector data of variousnon-topographic information acquired from map digitization and the grid type topographicdata offered by DTM. The series of algorithms for intersections and registration are alsopresented. Hence the matching overlap between DTM and non-topographic features is re-alized.