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DOI:
Journal of Software:2002.13(9):1893-1898

应用于网上虚拟手术的自适应变形模型
蔡及时,孙汉秋,王平安
(香港中文大学,计算机科学与工程学系,香港)
An Adaptively Deformable Model for Web-Based Virtual Surgery
Choi Kup-sze,SUN Han-qiu,Heng Pheng-Ann
()
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Received:February 23, 2002    Revised:June 19, 2002
> 中文摘要: 提出并开发了一种适用于网上虚拟手术的自适应变形模型.在这个模型里,外力逐层地传播到软组织里,从而导致变形.通过控制外力的渗透深度,变形只局限在某些区域内发生,而模拟的计算量和准确性亦得以优化.该方法避免了在传统的质点弹簧模型中建立刚度矩阵的繁复程序.实验结果表明,这个模型可以用来模拟不同机械特性的材料,亦可用于在虚拟环境里模拟多用户的协同工作,或与多自由度的触觉式设备结合使用.
Abstract:An adaptively deformable model for web-based virtual surgery is proposed. In this model, external forces propagate on layer-by-layer basis into soft tissues and thereby leading to changes in shape. By controlling the penetration depth of external forces, deformation is restricted to occur only in localized regions, and optimization between computational complexity and accuracy is achieved. This technique avoids laborious formulation of stiffness matrix in conventional mass-spring models. Experimental result show that the model is suitable for modeling materials of various mechanical properties.It can also be used for multi-user collaborative work in virtual enbironments and integrated with multiple degree-of-freedom haptic devices.
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基金项目:香港中文大学Direct Research基金资助项目(2050243);香港Research Grants Council基金资助项目(CUHK 1/00C) 香港中文大学Direct Research基金资助项目(2050243);香港Research Grants Council基金资助项目(CUHK 1/00C)
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蔡及时,孙汉秋,王平安.应用于网上虚拟手术的自适应变形模型.软件学报,2002,13(9):1893-1898

Choi Kup-sze,SUN Han-qiu,Heng Pheng-Ann.An Adaptively Deformable Model for Web-Based Virtual Surgery.Journal of Software,2002,13(9):1893-1898