一种DOM和DEM融合技术的山脉水系地图编制研究——以《滇池流域入湖河道分布全图》编制为例

A mountain and river map compilation method based on the fusion technique of DOM and DEM——an example of "Rivers Flowing into Dianchi Lake Distribution Map" compilation

传统的卫星影像地图的编制大多采用影像加文字的方法,因而图面繁杂且识图困难。本文利用滇池治理工程对入滇河道的普查探测数据及滇池流域的基础测绘数据,结合先进的正射影像处理技术和DEM数据晕渲分层设色技巧,特别给出一种使用地貌晕渲和卫星影像数据融合来表示山脉地形方法,编制出视觉上更具美感及视觉冲击力的三维专题影象地图,成果为滇池的治理与城市规划提供了直观的决策依据,在实际应用中取得较好效果。

Traditional satellite imagery maps often use the method of applying images and text, which is difficuh to read with lots of complex contents. In this paper, the authors used the Dianchi Lake Engineering and applied the census data and basic survey data of rivers flowing into Dianchi Lake, and combined advanced image processing technology and ortho-DEM data layer colors skill, and espe- cially gave a fusion method of relief shading and satellite image data for presenting mountain topography to compile a three-dimensional image topic map of more visually aesthetic and visual impact. The results were rather satisfied, which has been used in the Dianchi Lake governance and urban planning and could provide an intuitive decision-making reference in the practical application.