基于二面角的三角网格简化算法  

An algorithm of triangle mesh simplication based on dihedral angle

作　　者：陈志秋[1] 史立新[1] 

机构地区：[1]南京农业大学工学院,南京210031

出　　处：《现代制造工程》2011年第6期49-52,共4页Modern Manufacturing Engineering

摘　　要：逆向工程建模自动化技术的发展,提高了对网格简化质量的要求。为了在大规模简化时保持模型的重要几何特征,在Garland二次误差测度算法基础上,提出二面角的三角网格简化算法,编写了实现算法的Matlab程序。通过实例与Garland算法进行比较,结果表明基于二面角的三角网格简化算法很好地保留了模型的几何特征,提高了网格简化质量,能满足自动化建模的要求。The development of automatic surface reconstruction technique in reverse engineering requires higher quality of mesh simplication. In order to remain more significant geometry fetures and information, an improved quadric error metric that can keep the shape features around edges based on Garland＇s quadric error metric is presented and complied by the program written in Matlab. Compare with Garland＇s algorithm through examples, this algorithm can keep geometry fetures more perfectly and improves the quality of mesh simplication, and could meet the requirement of automatic surface reconstruction technique.

关 键 词：网格简化 二面角 二次误差测度 MATLAB软件 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]