一种基于表面积比例的地形纹理贴图算法  

A Territory Texture Mapping Algorithm Based on Area Ratio

作　　者：陈晓铮[1] 李震霄[1] 

机构地区：[1]上海交通大学计算机系,上海200240

出　　处：《计算机仿真》2007年第8期174-177,共4页Computer Simulation

摘　　要：三维地形模型和纹理贴图都是计算机图形学领域的热点课题,他们也同时被广泛运用于计算机仿真。然而,对于三维地形纹理贴图,目前还没有高效准确的实用算法。文中参考了国内外的研究成果,分析和比较了现有的常用贴图方法,提出了一种新型地形纹理贴图算法。该算法以地形表面积比例作为纹理分割标准,使用分治法划分纹理空间,对于用高度图表示的网格地形,计算快速,并且实现了理想的地形贴图效果,有效减少了拉伸失真,是一种适合实际应用的地形纹理贴图算法。3D territory models and texture mapping are both among the hot topics in computer graphics. They are also widely used in computer simulation. However, the existing mapping algorithms lack either efficiency or precision. By referencing some recent researches and applications, this paper compares and analyzes the existing mapping algorithms and presents an efficient mapping algorithm designed for large - scale territory with height - maps, It minimizes distortion by reserving the ratio of area in the mesh - space and territory - space based on the Divide and Conquer method. It is an useful and efficient method for territory texture mapping.

关 键 词：纹理贴图算法 地形贴图 高度图 表面积 

分 类 号：TP317.4[自动化与计算机技术—计算机软件与理论]