Geometric Modeling and Collision Detection Based on Hybrid Bounding Box in Virtual Gallbladder Surgery

摘要：

　　With the virtual surgery simulation system playing an increasing role in the medical filed,a method of reconstructing a virtual gallbladder geometric model and an algorithm of collision detection based on S-AABB hybrid bounding box in virtual gallbladder surgery are put forward.In the process of geometric modeling,we can compile program to read and store the information of contour vertexes and triangle facets,and index the position of triangle facet vertexes in vertex array,so that triangle facet is correlated with vertex array.Because the program only need to call the vertex information in the simulation,it will reduce the time consumption.To avoid traversing every triangle facet of operation object in collision detection,we create a list which includes its all adjacent triangle facets.When a triangle facet is collided,we just judge that whether its adjacent ones are collided or not,not traversing all ones.This method must optimize the algorithm of collision detection and improve the real-time and accuracy of virtual surgery system.

关键词： Virtual surgery Geometric modeling Hybrid bounding box Collision detection

作者: Lingtao Yu Tao Wang Huajian Song Liqiang Sun Zhengyu Wang Lingyao Zhao

作者单位: School of Mechanical and Electrical Engineering, Harbin Engineering University. Harbin, Heilongjiang School of Mechanical and Electrical Engineering, Harbin Engineering University. Harbin, Heilongjiang

会议类型: 国际会议

会议名称: 2013 ICME International Conference on Complex Medical Engineering(2013 ICME复合医学工程国际会议)

会议地点: 北京

会议语种:英文

页码: 25-30

在线出版日期: 2013-05-25（万方平台首次上网日期，不代表论文的发表时间）