Abstract
Ray tracing’s greatest strength—that it can simulate all types of light transport—can also be its greatest weakness: when there are a few paths that unexpectedly carry much more light than others, the produced images contain a smattering of pixels that have bright spiky noise. Not only can it require a prohibitive number of additional rays to average out those spikes, but those pixels present a challenge for denoising algorithms. This chapter presents two techniques to address this problem, preventing it from occurring in the first place.
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Pharr, M. (2019). Ignoring the Inconvenient When Tracing Rays. In: Haines, E., Akenine-Möller, T. (eds) Ray Tracing Gems. Apress, Berkeley, CA. https://doi.org/10.1007/978-1-4842-4427-2_17
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DOI: https://doi.org/10.1007/978-1-4842-4427-2_17
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Publisher Name: Apress, Berkeley, CA
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Online ISBN: 978-1-4842-4427-2
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