虚拟手术中表面网格模型的力反馈算法与仿真  

SURFACE GRID MODEL-BASED FORCE FEEDBACK ALGORITHM AND SIMULATION IN VIRTUAL SURGERY

作　　者：潘家辉[1] 朱玲利[2] Pan Jiahui;Zhu lingli(School of Software, South China Normal University, Nanhai 528225 , Guangdong, China;School of Information Technology, Luoyang Normal University, Luoyang 471002 , Henan, China)

机构地区：[1]华南师范大学软件学院,广东南海528225 [2]洛阳师范学院信息技术学院,河南洛阳471002

出　　处：《计算机应用与软件》2016年第6期260-263,333,共5页Computer Applications and Software

基　　金：国家高技术研究发展计划项目(2012AA021105);广东省中科院产学研合作研究项目(2010A090100032)

摘　　要：提出一个带力反馈的虚拟腹部外科手术系统,并重点研究及实现了基于表面网格模型的力反馈算法。为了提高系统的稳定性,使用基于线段与表面三角网格的碰撞检测方法;基于四阶Runge-Kutta方法的表面网格mass-spring模型进行变形仿真;基于力的广度优先传播来解决变形仿真的局部性。通过仿真实验验证了该原型系统可以实现与可变形的三维模型的实时力觉交互。最后,把该方法应用到虚拟腹部外科手术系统中,并实现带力反馈的手术仿真操作。In this paper we introduce a virtual abdominal surgery system with force feedback,and emphatically study and realise the surface grid model-based force feedback algorithm.To improve the stability of the system,we used the collision detection which is based on line and surface triangular grid,the surface grid mass-spring model which is based on fourth-order Runge-Kutta algorithm to carry out deformation simulation,and the force-based breadth-first propagation to solve the locality of deformation simulation.Through simulation experiment we verified that the prototype system was able to achieve real-time force interaction with deformable 3D model.Finally,we applied the method to virtual abdominal surgery system,and realised the surgery simulation operation with force feedback.

关 键 词：虚拟手术 表面网格 质点一弹簧模型 四阶Runge-Kutta算法 广度优先的力传播模型 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]