ReSTIR - Reservoir based Spatio-Temporal Importance Sampling

06/08/2025 28 min

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Episode Synopsis

In today’s talk, we’ll analyze this paper that introduces ReSTIR, a technique that has gained traction in Ray Tracing. It aims to improve sample distribution by adding multiple candidates to achieve a better-distributed sample, emphasizing the critical role of Multiple Importance Sampling and unbiased weight contributions to maintain accuracy.Read original paper:https://intro-to-restir.cwyman.org/presentations/2023ReSTIR_Course_Notes.pdf