手术仿真中的碰撞检测研究  

RESEARCH ON COLLISION DETECTION IN SURGERY SIMULATION

作　　者：魏迎梅[1] 王涌[2] 吴泉源[2] 石教英[3] 沙基昌[1] 

机构地区：[1]国防科学技术大学人文与管理学院管理系,长沙410073 [2]国防科学技术大学计算机学院,长沙410073 [3]浙江大学CAD&CG国家重点实验室,杭州310027

出　　处：《计算机研究与发展》2002年第1期114-119,共6页Journal of Computer Research and Development

基　　金：国家自然科学基金 (6982 3 0 0 3 );浙江省自然科学基金 (6990 83 )资助

摘　　要：手术仿真是虚拟现实技术在现代医学领域的一个重要应用 ,快速精确的碰撞检测是保证手术仿真真实性的重要条件 ,手术仿真的实时性和复杂性对碰撞检测提出了更高的要求 .在全面分析了手术仿真中碰撞检测的新特点的基础上 ,给出了一种基于固定方向凸包包围盒层次的碰撞检测方法 ,这种方法不仅能有效地提高碰撞检测的速度 ,而且能适应软组织变形后几何特性和拓扑结构的变化 .具体应用表明 。Surgery simulation is an important application of virtual reality in the field of modern medicine. Quick and exact collision detection is an important factor for the reality of surgery simulation, while the real time and complexity requirement brings an even higher request. Based on the comprehensive analysis of new features on collision detection in surgery simulation, a method based on fixed direction hull bounding volume hierarchy is proposed, which not only can improve the speed of collision detection but also can adapt to the change of geometric quality and topology after the tissue deformation. It is indicated through a concrete application that this method can resolve collision detection problem in surgery simulation well.

关 键 词：手术仿真 碰撞检测 包围盒 固定方向凸包 虚拟现实 医学 

分 类 号：R61[医药卫生—外科学] TP391.9[医药卫生—临床医学]