虚拟手术中顶点复制切割算法的设计研究

为了解决虚拟内镜手术中软体组织切割模拟仿真问题,论述并实现了虚拟手术中软组织切割仿真技术.使用四面体网格模型,利用刀具移动简化模型,构造用于切割操作的切割树,设计了通过划分切割区域,复制和移动顶点,在实现切割分裂时,减少网格单元结构数量增加的切割分裂和切割细化算法.通过仿真实验,文中算法的耗时与切割长度程线性关系;使用该算法实施切割后,网格结构中单元结构数量的增加相比传统的算法有明显减少.

Study on Cutting Simulation Based on Vertex Duplication in Virtual Surgery

In order to simulating cutting on soft tissue in the virtual endoscopic sinus surgery,cutting simulation of soft tissue in virtual surgery was discussed. The tetrahedral mesh model,and the simplified model of the moving of scalpel were used,the cutting tree was constructed for the cutting operation,the cutting division and cutting thinning algorithms were designed which can reduce the increase number of grid cell structure by duplicating and moving vertices according to their location in the cutting. Throug...