在混合器官模型中的GPU加速变形映射用于实时模拟模拟
Rintaro Miyazaki1, Yuichiro Hayashi2, Masahiro Oda2,3
1Graduate School of Informatics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8601, Japan. rmiyazaki@mori.m.is.nagoya-u.ac.jp.
概括
这项研究引入了一种用于手术模拟的GPU加速方法,显著加快了高分辨率器官模型中软组织变形的映射. 这提高了医疗培训的实时性能.
科学领域:
- 医疗模拟 医疗模拟
- 计算机图形 计算机图形
- 计算解剖学的计算解剖学
背景情况:
- 手术模拟需要实时软组织变形才能进行有效的训练.
- 目前使用多个分辨率或适应性网状精炼的方法在绘制变形数据时面临处理延迟.
研究的目的:
- 在手术模拟中开发和评估一个GPU加速的方法来绘制软组织变形的地图.
- 为了解决实时器官模型变形中的计算瓶.
主要方法:
- 从高分辨率的器官模型中生成了一个层次的八度立方体结构.
- 顶点坐标是通过在八树结构内使用三线间接计算的.
- 一个顶点遮光程序处理了GPU染管道中的器官模型顶点以加速.
主要成果:
- 与基于CPU的方法不同,基于GPU的处理时间随着模型顶点的增加而几乎保持不变.
- GPU性能显示与表面立方体数量的线性缩放.
- 确定了GPU实现显著优于基于CPU的方法的条件.
结论:
- 使用 vertex shaders 实现的 octree 立方体变形映射有效地加速了这个过程.
- 在手术模拟中,GPU加速对具有多个顶点的高分辨率器官模型有好处.
相关概念视频
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