Plane Sampling for Light Paths from the Environment Map

Plane Sampling for Light Paths from the Environment Map
复制标题

环境贴图光路的平面采样

DOI:
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发表时间:
2009
期刊:
J. Graphics, GPU, & Game Tools
影响因子:
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通讯作者:
Johannes Hanika
Johannes Hanika
中科院分区:
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文献类型:
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作者:
H. Dammertz;Johannes Hanika

文献摘要

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我们提出了一种在基于图像的照明或物理天空模型的蒙特卡罗全局照明的背景下,在发射环境贴图上开始光路径的方法。使用此技术,我们可以有效地从这些类型的灯光渲染无偏焦散,例如使用双向路径跟踪。此外,现在可以对环境贴图正确使用多重重要性采样、光子贴图和即时光能传递等算法。
We present a method to start light paths on an emitting environment map in the context of Monte Carlo global illumination with image-based lighting or physical sky models. With this technique, we can efficiently render unbiased caustics from these kinds of lights, for example using bi-directional path tracing. Additionally, it is now possible to use algorithms like multiple importance sampling, photon mapping, and instant radiosity correctly with environment maps.