基于质点弹簧模型和骨架球模型的虚拟肾脏建模  

Virtual kidney modeling based on particle spring model and skeleton ball model

作　　者：李昊哲 朱玲 李艳东[1] LI Hao-zhe;ZHU Ling;LI Yan-dong(College of Computer and Control Engineering,Qiqihar University,Heilongjiang Qiqihar 161006,China;School of Mechanical and Electronic Engineering,Qiqihar University,Heilongjiang Qiqihar 161006,China)

机构地区：[1]齐齐哈尔大学计算机与控制工程学院,黑龙江齐齐哈尔161006 [2]齐齐哈尔大学机电工程学院,黑龙江齐齐哈尔161006

出　　处：《齐齐哈尔大学学报（自然科学版）》2024年第1期21-26,共6页Journal of Qiqihar University(Natural Science Edition)

基　　金：黑龙江省高校基本科研业务费项目(145209119)。

摘　　要：针对软组织建模中的几何剖分、物理建模和数值解算方法选择等关键问题,在软组织的几何剖分中采用德劳内法,提出了质点-弹簧模型和骨架球模型相结合的方法,解决了单一质点-弹簧模型形变仿真效果不佳问题。通过对比各数值分析方法选择改进显示欧拉法完成对虚拟肾脏物理模型运动学方程的数值求解,并提出对于虚拟软组织模型运动形变区域的确定与限定方法,提升了虚拟手术系统的图像刷新率与力反馈刷新率。In response to key issues such as geometric dissection,physical modeling,and numerical solution method selection in soft tissue modeling,this paper adopts the Delaunay method in geometric dissection of soft tissue,and proposes a method that combines the particle spring model and the skeleton ball model,solving the problem of poor deformation simulation performance of a single particle spring model.By comparing various numerical analysis methods,the improved explicit Euler method was selected to complete the numerical solution of the Kinematics equation of the virtual kidney physical model.The method to determine and limit the movement deformation area of the virtual soft tissue model is proposed,which improves the image refresh rate and force feedback refresh rate of the virtual surgery system.

关 键 词：软组织建模 质点-弹簧模型 骨架球模型 改进欧拉法 形变区域 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]