基于组件的虚拟手建模及碰撞检测  

Virtual Hand Modeling and Collision Detection Based on Component Technique

作　　者：王天柱[1] 李文辉[1] 王祎[1] 崔虎[1] 冯广慧[1] 

机构地区：[1]吉林大学计算机科学与技术学院,长春130012

出　　处：《吉林大学学报（理学版）》2006年第4期599-605,共7页Journal of Jilin University:Science Edition

基　　金：国家自然科学基金(批准号:60573182)

摘　　要：提出一种基于组件技术构建虚拟手的OBB层次包围体树方法.首先分解手模型为多个子单元形成部件,然后利用部件的OBB包围盒自底向上生成复杂组件层次体树结构,不但能较好地满足部件本身的几何约束,而且也加快了建模和运动更新的速度.实验表明,基于组件的手模型能很好地满足虚拟现实系统对手运动实时性与检测精确性的要求.This paper presents an efficient collision detection scheme based on component technique by means of oriented bounding boxes （OBBs） for sophisticated virtual hand model. Firstly, hand model is divided into parts and then the algorithm used the OBB of these parts to build a component hierarchical tree in a bottom-up manner. As a result, not only parts＇ constraints are satisfied but also the issues of low speed in building and refitting the hierarchical bounding volume tree are solved. In the end, we gave the precision and efficiency evaluation about the algorithm and it was found that it might be a reasonable choice for virtual hand in virtual reality.

关 键 词：碰撞检测 组件 方向包围盒 虚拟手 

分 类 号：TP31[自动化与计算机技术—计算机软件与理论]