碰撞检测在虚拟心脏介入手术中的应用  

Application of Collision Detection in Virtual Cardiology Interventional

作　　者：康勇[1] 谭柯[2] 郭光友[2] 

机构地区：[1]国防科学技术大学计算机学院计算机系,湖南长沙410073 [2]中国人民解放军总医院技术教育中心,北京100853

出　　处：《计算机与现代化》2008年第11期105-108,共4页Computer and Modernization

基　　金：北京市自然科学基金资助项目(4062034)

摘　　要：虚拟手术系统是虚拟现实技术在现代医学的重要应用。碰撞检测是虚拟手术系统的基础问题。基于心脏介入手术中碰撞的特点,提出了结合空间分解和包围盒层次的混合碰撞检测算法。它能够满足虚拟心脏介入手术系统中对碰撞检测的实时性要求。该算法对被检测对象形变引起的更新不敏感,具有天然的解决可变形对象间碰撞检测的能力。Virtual surgery system is an important application of virtual reality in the field of modem medical. Collision detection is a fundamental problem in the system. A hybrid collision detection method, combined with bounding volume hierarchy and spatial subdivision, based on the character of the collision in the system, is proposed. It can address the collision detection problem in virtual Interventional Cardiology system in real time. The algorithm is not sensitive to the update caused by the deformation of the objects＇ model, and has the inherent ability to handle the deformable collision detection.

关 键 词：心脏介入手术 碰撞检测 层次包围盒 空间分解 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]