文档介绍：第8卷(A版)特刊 2003年特刊中国图象图形学报 Journal ofImage and Graphics (A),spec. spec 2003 一种基于视点的网格模型简化算法谢凯杨杰(上海交通大学图象处理与模式识别研究所,上海200030) 摘要在计算机图形学中,经常采用网格模型对物体和场景进行描述,,必须对网格模型进行简化,目前的简化算法,主要是以网格模型几何误差的最小化为准则,,其简化准则是视觉特征的最优化,利用视点相关, 建立视点与网格精度的对应关系,对距离视点较近的部分采用较密网格,,该算法能够在保证高度真实感视觉效果的前提下,实现模型较大幅度的简化. 关键词地形模型模型简化判决准则多边形网格中圈法分类号: 文献标识码:A 文章编号:1006—8961(2003)spec一0005—04 An Algorithm ofViewpoint—Based Mesh Model Simplification xIE Kai,YANG Jie (1nst of Image P似'essing&PatternRetvgnnion, Univ.,Shanghai 200030) Abstract puter graphics,object and scenes are often described by mesh models,However,a plicated model often includes large—scale large data a bottleneck ofreal—time rendering,so necessary to simplify mesh simplification criteria ofmany algorithms minimizing thegeometry errors now,the visual effect ofthemodel paper gives amesh model simplification algorithm based on the viewpoint and the rule of this algorithm the optimization of visual the correlation of the viewpoint,the relation between the viewpoint and the precision ofthe mesh built,thick mesh applied to the part faraway form the viewpoint;thin mesh applied to the part near the group ofexperimental result also given,which illustrate thatthe above algorithm can realize model si