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Perceptual Influence of Approximate Visibility in Indirect Illumination

Yu, IS; Cox, A; Kim, MH; Ritschel, T; Grosch, T; Dachsbacher, C; Kautz, J; (2009) Perceptual Influence of Approximate Visibility in Indirect Illumination. ACM T APPL PERCEPT , 6 (4) , Article 24. 10.1145/1609967.1609971.

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In this article we evaluate the use of approximate visibility for efficient global illumination. Traditionally, accurate visibility is used in light transport. However, the indirect illumination we perceive on a daily basis is rarely of high-frequency nature, as the most significant aspect of light transport in real-world scenes is diffuse, and thus displays a smooth gradation. This raises the question of whether accurate visibility is perceptually necessary in this case. To answer this question, we conduct a psychophysical study on the perceptual influence of approximate visibility on indirect illumination. This study reveals that accurate visibility is not required and that certain approximations may be introduced.

Type: Article
Title: Perceptual Influence of Approximate Visibility in Indirect Illumination
DOI: 10.1145/1609967.1609971
Keywords: Algorithms, Global illumination, perception, visibility, PRECOMPUTED RADIANCE TRANSFER, GLOBAL ILLUMINATION, COMPUTATION, EFFICIENT
URI: http://discovery.ucl.ac.uk/id/eprint/174546
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