基于OpenGL的地貌可视化及晕渲图制作系统研究

Research on relief visualization and genarative system of hill-shading maps based on OpenGL

介绍平面地图上地貌的表示方法,总结了地貌晕渲法的基本概念、光照原理和设色原理,讨论研究了计算机地貌晕渲的地形建模、坐标转换和光照处理方法,提出地形数据分块的管理方法。并在此基础上,利用VC++和OpenGL实现了地貌可视化及晕渲图制作系统,最后论述了地貌可视化及晕渲图制作系统的功能和结构,展示了部分系统成果。

This paper introduces the way to mark geomporphy, Summarizes the basic concept of hill-shading and principles of light and color, discusses the digital elevation model, coordinate conversion and light treatment, and proposes themanaging method of topographic data partition. Based on the above, relief visualization and generative system of hill-shading maps are realized, Finally, the function and structure of relief visualization and generative system of hill-shading maps are illustrated and parts of systematic a chievements are displayed.