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A GPU-based integrated approach to simulation for deformable surface meshes.

机译:基于GPU的集成方法,用于可变形曲面网格的仿真。

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摘要

Surgical techniques have evolved from direct hands-on maneuvers to indirect minimally-invasive procedures, learning which involves using virtual simulation environments with standardized exercises typically comprising scene representation, collision-detection, force feedback, and rendering. Key challenges are the need to improve speed and realism of the simulation while being run on consumer-grade computing platforms.;A prototype implementation using the NVIDIA GeForce 7600GS is presented. Interactive surface wrapping models a cloth-like surface into a closed mesh while the deformation phase is a GPU-based parallelized Implicit Euler method. Point-based haptic interaction with virtual coupling provides tactile feedback. The results show significant speedups, upto a factor of 6.5 times, for the GPU-based simulation over the CPU.;This thesis aims at overcoming these challenges by developing an algorithm to utilize the Graphics Processing Unit (GPU) as a parallel processor. The approach presented consists of three phases: off-line surface wrapping, implicit integration for deformation, and tactile feedback.
机译:外科技术已经从直接的动手操作发展成间接的微创程序,学习涉及将虚拟仿真环境与标准化练习一起使用,该练习通常包括场景表示,碰撞检测,力反馈和渲染。主要挑战是需要在消费级计算平台上运行时提高仿真的速度和逼真度。提出了使用NVIDIA GeForce 7600GS的原型实现。交互式表面包裹将布状表面建模为封闭的网格,而变形阶段是基于GPU的并行隐式Euler方法。与虚拟耦合的基于点的触觉交互提供触觉反馈。结果表明,基于CPU的基于GPU的仿真速度显着提高,可达6.5倍。本文旨在通过开发一种将图形处理单元(GPU)用作并行处理器的算法来克服这些挑战。提出的方法包括三个阶段:离线表面包裹,用于变形的隐式集成和触觉反馈。

著录项

  • 作者

    Kotamraju, Vidya.;

  • 作者单位

    Simon Fraser University (Canada).;

  • 授予单位 Simon Fraser University (Canada).;
  • 学科 Engineering Computer.;Computer Science.
  • 学位 M.A.Sc.
  • 年度 2008
  • 页码 110 p.
  • 总页数 110
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 能源与动力工程;
  • 关键词

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