Interactive Ray Tracing for Visualization

用于可视化的交互式光线追踪

• 批准号: 9978099
• 负责人: Charles Hansen
• 金额: $ 52.68万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-10-15 至 2003-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9978099&HistoricalAwards=false
• 关键词: Interactive; Ray; Tracing; Visualization

Visualization systems are most effective when the user can interactively explore the data by varying the viewpoint and visualization parameters via direct manipulation. However, visualization applications fre-quently deal with extremely large datasets, so such interaction is often impossible. In addition to being large, these datasets often have high depth-complexity and non-polygonal primitives, which makes them poorly suited to most current graphics accelerators. This project will investigate the use of ray tracing vi-sualization applications. By exploiting parallelism and image-based-rendering (pixel reprojection) this project can create a system that is both interactive and responsive for very large datasets. In addition, the programmable nature of such a system will allow improved rendering effects such as shadows and transparency, and sup-port for non-polygonal primitives such as glyphs and volumes. To test the relevance and performance of this system the project will be tested in several application areas: medical visualization, fluid flow visualization, terrain visualization, and bioelectric modeling visualization.

当用户可以通过直接操作改变视点和可视化参数来交互式地探索数据时，可视化系统是最有效的。然而，可视化应用程序经常处理非常大的数据集，因此这种交互通常是不可能的。除了很大之外，这些数据集通常具有高深度复杂性和非多边形基元，这使得它们不适合大多数当前的图形加速器。这个项目将研究光线跟踪可视化应用程序的使用。通过利用并行和基于图像的渲染（像素重投影），该项目可以创建一个系统，这是非常大的数据集的交互和响应。此外，这种系统的可编程特性将允许改进的渲染效果，如阴影和透明度，并支持非多边形图元，如字形和体积。为了测试该系统的相关性和性能，该项目将在几个应用领域进行测试：医学可视化，流体流动可视化，地形可视化和生物电建模可视化。