基于组件的虚拟手建模及碰撞检测

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.

Virtual Hand Modeling and Collision Detection Based on Component Technique

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.