动态漫反射全局光照恢复
Dynamic Diffuse Global Illumination Resampling
摘要：
交互式全局光照在辐射测量和几何复杂场景中仍然是一个挑战。专门的采样策略是有效的镜面和近镜面运输，因为散射具有相对较低的方向方差每个散射事件。相比之下，来自包括多个粗糙光泽或漫散射事件的传输路径的高变化仍然非常难以用少量样本来解决。我们扩展单向路径追踪，以解决这个问题相结合的屏幕空间水库reserve和稀疏的世界空间探测，显着提高样本效率的传输贡献，终止漫散射事件。我们的实验证明了一个明显的改进-在相同的时间和相同的质量-在纯粹的路径跟踪和纯粹的基于探针的基线。此外，当与商品去噪器相结合时，我们能够在复杂场景中交互式地渲染全局光照。
英文摘要：
Interactive global illumination remains a challenge in radiometrically- and geometrically-complex scenes. Specialized sampling strategies are effective for specular and near-specular transport because the scattering has relatively low directional variance per scattering event. In contrast, the high variance from transport paths comprising multiple rough glossy or diffuse scattering events remains notoriously difficult to resolve with a small number of samples. We extend unidirectional path tracing to address this by combining screen-space reservoir resampling and sparse world-space probes, significantly improving sample efficiency for transport contributions that terminate on diffuse scattering events. Our experiments demonstrate a clear improvement -- at equal time and equal quality -- over purely path traced and purely probe-based baselines. Moreover, when combined with commodity denoisers, we are able to interactively render global illumination in complex scenes.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
