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Gradient-Domain Bidirectional Path Tracing
[article]
2015
Symposium on Rendering
Gradient-domain path tracing has recently been introduced as an efficient realistic image synthesis algorithm. This paper introduces a bidirectional gradient-domain sampler that outperforms traditional bidirectional path tracing often by a factor of two to five in terms of squared error at equal render time. It also improves over unidirectional gradient-domain path tracing in challenging visibility conditions, similarly to how conventional bidirectional path tracing improves over its
doi:10.2312/sre.20151168
fatcat:4j6lexfijbfpjotgzjn3iprgbq