【SIGGRAPH Asia 2012专题*技术论文】全球照明：强大的光传输模拟的路径空间扩展

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【SIGGRAPH Asia 2012专题*技术论文】
全球照明：强大的光传输模拟的路径空间扩展A Path Space Extension for Robust Light Transport Simulation
Toshiya Hachisuka, Jacopo Pantaleoni, Henrik Jensen 摘要：我们提出了一种新的样本空间光传输路径，使得它可以在相同的框架描述蒙特卡洛路径积分和光子密度估计。我们论文的一个主要贡献是引进的顶点扰动，从而扩展了空间的路径与松耦合的连接。新的框架，在同一个空间的路径概率计算，在相同的措施，这使我们能够使用多个重要抽样结合蒙特卡洛路径积分和光子密度的估算。强劲统一的路径算法，采样，可以使复杂的组合和现有的光传输模拟方法是有问题的光泽表面和散焦。Abstract：We present a new sampling space for light transport paths that makes it possible to describe Monte Carlo path integration and photon density estimation in the same framework. A key contribution of our paper is the introduction of vertex perturbations, which extends the space of paths with loosely coupled connections. The new framework enables the computation of path probabilities in the same space under the same measure, which allows us to use multiple importance sampling to combine Monte Carlo path integration and photon density estimation. The resulting algorithm, unified path sampling, can robustly render complex combinations and glossy surfaces and caustics that are problematic for existing light transport simulation methods.要了解该论文的详情呢，就下载附件好好研究一下哈~更多新技术分享尽在web3D纳金网http://www.narkii.com/