Tactile Force Feedback to Achieve Fission of Soft Tissue Geometric Model in the Virtual Surgery
In the virtual surgery system, the human soft tissue cutting process simulation is a hot research topic, which involves soft tissue of fission and forcefeedback.Can cut soft tissue in real-time simulation of fission, will affect the systems fidelity, while accurate force-feedback is necessary to guarantee system practicability.In previous studies, the use of a tetrahedral cell subdivision strategy based on cutting algorithm simulated body grid cutting, combined with GHOST SDK has established a virtual surgery system in human tissue touch model.With advances in virtual simulation technology, GHOST SDK has gradually replaced by new tactile rendering tools, so that it can not adapt to the ever-changing virtual surgery simulation system.In this paper, for the new requirements of virtual surgery, combined with OpenGL and OpenHaptics, we introduce a new touch model, following the previous simulations of deformation, a vertexes partition cut algorithm based on triangular mesh for real-time to achieve an efficient realistic cutting simulation.In our system, three-dimensional model of human soft tissue surface triangular patches unit is the subject of research.For the triangular grid cut, the real-time cutting method based on vertexes partition could satisfy the evaluation of real-time virtual surgery and robustness requirements.In our algorithm, we use a simple vertex copying and moving method, which involves some knowledge of computational geometry.
Virtual surgery system force-feedback OpenHaptics triangular mesh real-time cutting method soft tissue model
Zhao Jianna Yang Jie
North China Electric Power University Baoding,China
国际会议
太原
英文
334-337
2011-02-26（万方平台首次上网日期，不代表论文的发表时间）