基于骨架的网格模型变形  

Grid Model Deformation Based on Skeleton

作　　者：齐晓明[1] 韩丽[1] 

机构地区：[1]辽宁师范大学计算机与信息技术学院,辽宁大连116029

出　　处：《计算机工程》2012年第22期216-219,224,共5页Computer Engineering

基　　金：国家自然科学基金资助项目(61201316);辽宁省教育厅基金资助项目(2010921090)

摘　　要：现有骨架驱动变形算法多以单一骨架驱动变形,且骨架预设十分复杂。为此,提出一种基于骨架的网格模型变形算法。结合多分辨率Reeb图方法提取模型的骨架结构,确定各骨架点对应的局部区域,将骨架点插值构造二次Bézier曲线,通过交互式拖动任意骨架点,计算与其相连多骨架点的动态变化情况,实现模型局部区域的自然形变。实验结果表明,该算法能获得较为自然平滑的变形结果。The current skeleton-driven deformation algorithms usually use single bone to drive deformation, and the skeleton default is very complex. In order to solve this problem, an improved mesh deformation algorithm based on skeleton is proposed. It combines the Reeb Graph（RG） skeleton extraction theory to obtain the local area of each skeleton, approximates the skeleton nodes into a Bezier curve. With the interaction of skeleton node, this algorithm can automatically adjust connected skeleton nodes, and implements the intuitive local deformation of mesh model. Experimental results show that this algorithm can obtain more natural and smooth deformation results.

关 键 词：网格模型 骨架 多分辨率 BÉZIER曲线 变形 交互 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]