三维组织压缩感知与交互式物理仿真方法研究

Based on the background that 3D tissue interactive physics simulation has wide application value in virtual surgery simulation, we explore the 3D tissue interactive physics simulation method with robustness and immersed sense to improve the realistic quality of various physical phenomenon of 3D tissue. To solve the problems that the tissue information acquisition cost of interactive physics simulation is high in virtual surgery simulation, it ignores the impact of physical parameters of tissue and the robustness of coupling model isn't strong, we conduct the innovative research of 3D tissue interactive physics simulation method combining compressive sensing, computational mechanics (elastic mechanics and computational fluid dynamics) and high performance computing method. The main research contents include (1) construct the 3D tissue information sensing platform based on image and graphics processing and compressive sensing; (2) establish a particles uniform framework with tissue physical structure Characteristics. (3) study the interactive warping, cutting and blooding physical models and the coupling of cutting and blood physical model of 3D tissue based on the uniform framework. Our basic research will be the theory and method foundation for the development of new generation virtual surgery simulation system that is suitable for clinical surgery training. The feasibility of this project has been well proved in previous work.

本项目以三维组织交互式物理仿真在虚拟手术仿真系统中的应用为基本背景，以提高三维组织在交互式手术仿真环境下物理现象真实性为切入点，探索鲁棒性和沉浸感相融合的三维组织交互式物理仿真方法。针对目前虚拟手术仿真系统中交互式物理仿真方法中组织三维信息获取成本高、忽视组织物理结构特征及耦合模型真实性、鲁棒性不理想的问题，结合压缩感知理论、计算力学(弹性力学与计算流体力学)及高性能计算等理论方法，开展三维组织交互式物理仿真方法的创新型研究。主要研究内容有：构建基于图形图像处理技术和压缩感知理论的三维组织信息感知平台、建立具有组织物理结构特征的粒子化统一框架、研究基于统一框架的三维组织在虚拟手术交互式仿真环境下变形、剪切、流血物理建模及耦合。本基础研究将为研制适用于临床外科医生手术培训的新一代"虚拟手术仿真系统"奠定理论和方法基础。本项目的可行性已经在前期工作中得到了充分验证。

本项目以三维组织交互式物理仿真在虚拟手术仿真系统中的应用为基本背景，以提高三维组织在交互式手术仿真环境下物理现象真实性为切入点，探索鲁棒性和沉浸感相融合的三维组织交互式物理仿真方法。针对目前虚拟手术仿真系统中交互式物理仿真方法中组织三维信息获取成本高、忽视组织物理结构特征及耦合模型真实性、鲁棒性不理想的问题，结合压缩感知理论、计算力学(弹性力学与计算流体力学)，开展三维组织交互式物理仿真方法的创新型研究。主要研究内容有：构建基于图形图像处理技术和压缩感知理论的三维组织信息感知平台、建立具有组织物理结构特征的粒子化统一框架。本基础研究将为研制适用于临床外科医生手术培训的新一代"虚拟手术仿真系统"奠定理论和方法基础。本项目的可行性已经在前期工作中得到了充分验证。本课题整体上按照研究计划进行，但出于优化方面的考虑，我们同时对任务书中的某些研究内容进行了必要的扩展，扩展的研究内容主要是：基于有限元的软组织变形仿真、基于能量自由边界异步扩散模型的软组织变形仿真、基于GPU的并行计算。