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基于四面体网格的软组织位置动力学切割仿真算法

白隽瑄 潘俊君 赵鑫 郝爱民

白隽瑄, 潘俊君, 赵鑫, 等 . 基于四面体网格的软组织位置动力学切割仿真算法[J]. 北京航空航天大学学报, 2015, 41(7): 1343-1352. doi: 10.13700/j.bh.1001-5965.2014.0526
引用本文: 白隽瑄, 潘俊君, 赵鑫, 等 . 基于四面体网格的软组织位置动力学切割仿真算法[J]. 北京航空航天大学学报, 2015, 41(7): 1343-1352. doi: 10.13700/j.bh.1001-5965.2014.0526
BAI Junxuan, PAN Junjun, ZHAO Xin, et al. Algorithm of position-based dynamics and cutting simulation for soft tissue using tetrahedral mesh[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(7): 1343-1352. doi: 10.13700/j.bh.1001-5965.2014.0526(in Chinese)
Citation: BAI Junxuan, PAN Junjun, ZHAO Xin, et al. Algorithm of position-based dynamics and cutting simulation for soft tissue using tetrahedral mesh[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(7): 1343-1352. doi: 10.13700/j.bh.1001-5965.2014.0526(in Chinese)

基于四面体网格的软组织位置动力学切割仿真算法

doi: 10.13700/j.bh.1001-5965.2014.0526
基金项目: 国家自然科学基金(61190120, 61190121, 61190125); 中央高校基本科研业务费专项资金(30356001)
详细信息
    作者简介:

    白隽瑄(1990—),男,北京人,硕士研究生,baijx6@buaa.edu.cn

    通讯作者:

    潘俊君(1981—),男,湖北荆州人,副教授,pan_junjun@buaa.edu.cn,主要研究方向为虚拟手术、计算机动画等.

  • 中图分类号: TP391.9

Algorithm of position-based dynamics and cutting simulation for soft tissue using tetrahedral mesh

  • 摘要: 为满足虚拟手术中软组织变形与手术模拟的真实性和实时性要求,提出了一种基于四面体网格和位置动力学的软组织切割模拟算法.首先,本算法以四面体作为软组织几何模型的基本操作单元,物理模型采用位置动力学模型驱动软组织变形,四面体网格的凸包形成软组织的外表面.其次,本算法对位置动力学模型进行了扩展,支持了模型拓扑改变的情况,使其适用于软组织的切割模拟.再次,利用支持纹理信息的四面体网格作为几何模型,能生成细节丰富的切口.最后,在该算法上实现了力反馈设备的应用,增加了切割过程中的触觉模拟,增强了虚拟手术中手术环境和过程模拟的真实性.实验表明:该模型能提供真实和高效的变形模拟,并具有较高稳定性和可操作性.本算法目前已应用在北航虚拟现实技术与系统国家重点实验室开发的医学手术模拟器上.合作医院在使用模拟器进行的腹腔镜检查手术方面已经做了前导性的研究,医生对模拟器评价也较高.

     

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出版历程
  • 收稿日期:  2014-08-25
  • 修回日期:  2014-09-26
  • 网络出版日期:  2015-07-20

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