文档介绍：第32卷第10期计算机学报 2009年10月 CHINESE JOURNAI。PUTERS 1 保持特征的三维网格模型尺寸调整何军”张彩”(山东大学计算机科学与技术学院济南250101) 2’(山东经济学院计算机科学与技术学院济南250014) ,然后以缩放前后三角形法向的叉乘为目标函数项进行优化,几何意义上,该法向叉乘项表示极小化每个三角形的法向变化; Willmore能量意义上,,通过引入拉格朗日乘数来求解满足约束条件的优化问题,从而能够精确保持模型的重要特征,,实例表明文中方法在调整模型尺寸的同时,既能很好地保持模型的敏感特征,也能精确保持某些重要的模型特征. 关键词三维模型尺寸调整;非均匀缩放;带约束的尺寸调整;法向叉乘中图法分类号TP391 DOI号:. Feature Preserving Resizing of3D Mesh Models HE Jun¨ZHANG Cai—Min91’·2’”(School puter Science and Technology,Shandong University,Ji’nan 250101) ”(School puter Science and Technology,ShandongEconomic University,Ji 7nan 250014) Abstract This paper presents anew method forresizing 3D mesh resizing driven byscaling each edge an objective ponent,which expressed as the cross product ofnormal vector ofevery triangle before and afterscaling,is devised tooptimize the resizing geometric meaning tOminimizing the variation ofnormal vector ofevery the sense ofWillmore energy,the cross product item can approximately minimize the variation oftheWillmore energy before and some important featured regions of the model,whose shape should be accurately preserved,a constrained resizing method also multiplier method used tO pr