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首页> 外文期刊>電子情報通信学会技術研究報告. 医用画像. Medical Imaging >A Real-Time Perspective Volume Rendering using the GPU Multi-pass Acceleration Technique: Application to Virtual Colonoscopy
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A Real-Time Perspective Volume Rendering using the GPU Multi-pass Acceleration Technique: Application to Virtual Colonoscopy

机译：使用GPU多遍加速技术的实时透视体绘制：在虚拟结肠镜检查中的应用

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摘要

The recent advancement in graphics processing unit (GPU) has enabled a direct volume rendering at interactive rates. However, a conventional way to accelerate CPU-based volume rendering cannot be directly applied to accelerate GPU-based volume rendering due to the architectural difference between CPU and GPU. In this paper, we propose the GPU multi-pass acceleration technique for a real-time perspective volume rendering method. The empty space searching and ray propagation step of volume data is divided into each processing pass in graphics hardware. By this multi-pass approach, we avoid the conditional branch, which causes a lot of computational burdens. Furthermore, the performance can be improved by the load balancing between graphics hardware and CPU. Experiments were performed to illustrate the efficiency of the proposed scheme. The experimental result shows that our method is more than six times faster than conventional method. The performance of our method is sufficient for real-time navigation in virtual colonoscopy. The proposed method can be successfully applied to help diagnosing the colon cancer in virtual colonoscopy.
机译：图形处理单元（GPU）的最新发展已实现了以交互速率进行直接体积渲染。但是，由于CPU和GPU之间的体系结构差异，传统的加速基于CPU的体积渲染的常规方法无法直接应用于加速基于GPU的体积渲染。在本文中，我们提出了一种用于实时透视体绘制方法的GPU多遍加速技术。体数据的空白空间搜索和射线传播步骤分为图形硬件中的每个处理过程。通过这种多遍方法，我们避免了条件分支，这会导致很多计算负担。此外，可以通过图形硬件和CPU之间的负载平衡来提高性能。实验表明了该方案的有效性。实验结果表明，我们的方法比常规方法快六倍以上。我们的方法的性能足以在虚拟结肠镜检查中进行实时导航。所提出的方法可以成功地用于帮助在虚拟结肠镜检查中诊断结肠癌。

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