计算机地貌晕渲效果增强方法研究  

Visual Effect Enhancement in Computer-Aided Hill-Shading

作　　者：姜文亮[1] 李霖[1] 应申[1] 

机构地区：[1]武汉大学资源与环境科学学院

出　　处：《武汉大学学报（信息科学版）》2007年第12期1176-1179,共4页Geomatics and Information Science of Wuhan University

基　　金：国家测绘局测绘科技发展基金资助项目(1469990324231)

摘　　要：在总结传统手工晕渲经验和方法的基础上,深入分析了计算机地貌晕渲的原理,着重研究了坡度和坡向对地貌晕渲中阴影强弱和明暗程度的影响,提出了变比例调整高程和晕渲笔调调整两种方法。实验表明,利用本文方法能有效改善地貌晕渲图的三维立体视觉效果。Analyzing the basic principle of automatic hill-shading and methods for enhancing the 3D expression of relief in traditional hill-shading, exposure and slope are considered to be important factors to the 3D expression of hill-shading. A proper change to gradient or grayness according to slope and exposure can be helpful to improve visual effect of hill-shading map. Two methods are introduced to modify gradient and grayness in computer-aided hill-shading. Practices prove that these methods are effective.

关 键 词：地貌晕渲 地图制图 视觉效果 

分 类 号：P283.1[天文地球—地图制图学与地理信息工程]