Interactive Global Illumination
Interactive Global Illumination
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交互式全局照明
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
P. Slusallek
中科院分区：
文献类型：
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作者：
I. Wald;T. Kollig;Carsten Benthin;A. Keller;P. Slusallek
交互式图形已被限制为简单的直接照明，通常会导致人工外观。通过模拟全局照明效果来获得更逼真的外观成本太高，无法以交互速率进行计算。本文描述了一种新的基于蒙特卡罗的全局光照算法。它实现了高达每秒10帧的性能，同时可以交互地应用对场景的任意更改。这种性能是通过有效地使用快速、分布式光线跟踪引擎以及用于并行蒙特卡罗模拟的新的交错采样技术来获得的。新的滤波步骤与相关采样相结合，避免了蒙特卡罗方法常见的干扰噪声伪影。
Interactive graphics has been limited to simple direct illumination that commonly results in an artificial appearance. A more realistic appearance by simulating global illumination effects has been too costly to compute at interactive rates. In this paper we describe a new Monte Carlo-based global illumination algorithm. It achieves performance of up to 10 frames per second while arbitrary changes to the scene may be applied interactively. The performance is obtained through the effective use of a fast, distributed ray-tracing engine as well as a new interleaved sampling technique for parallel Monte Carlo simulation. A new filtering step in combination with correlated sampling avoids the disturbing noise artifacts common to Monte Carlo methods.