Interactive Global Illumination Using Implicit Visibility
Interactive Global Illumination Using Implicit Visibility
复制标题
DOI：
10.1109/pg.2007.37
复制
发表时间：
2007-10
期刊：
影响因子：
--
通讯作者：
Z. Dong;J. Kautz;C. Theobalt;H. Seidel
中科院分区：
文献类型：
--
作者：
Z. Dong;J. Kautz;C. Theobalt;H. Seidel
以交互帧速率绘制动态场景的全局照明效果是一项具有挑战性的计算任务。大部分的计算时间需要花费在各个场景元素之间的可见性查询，它几乎是虚幻的，即使是在适度复杂的场景实时更新此信息。在本文中，我们提出了一个全球照明的动态场景，在一台PC上运行在近实时帧速率的方法。我们的方法的灵感来自层次辐射度的原则，并通过隐式评估相互可见性，同时构建场景元素之间的层次链接结构来解决可见性问题。通过同样高效且易于实现的框架，我们能够为中等大小的场景再现各种复杂的照明效果，例如相互反射，环境贴图照明以及区域光源。
Rendering global illumination effects for dynamic scenes at interactive frame rates is a computationally challenging task. Much of the computation time needed is spent during visibility queries between individual scene elements, and it is almost illusive to update this information at realtime even for moderately complex scenes. In this paper, we propose a global illumination approach for dynamic scenes that runs at near-real-time frame rates on a single PC. Our method is inspired by the principles of hierarchical radiosity and tackles the visibility problem by implicitly evaluating mutual visibility while constructing a hierarchical link structure between scene elements. By means of the same efficient and easy-to-implement framework, we are able to reproduce a large variety of complex lighting effects for moderately sized scenes, such as interreflections, environment map lighting as well as area light sources.