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Conference Paper

Perceptual Influence of Approximate Visibility in Indirect Illumination

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Ritschel,  Tobias
Computer Graphics, MPI for Informatics, Max Planck Society;

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Grosch,  Thorsten
Computer Graphics, MPI for Informatics, Max Planck Society;

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Kautz,  Jan
Computer Graphics, MPI for Informatics, Max Planck Society;

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Citation

Yu, I., Cox, A., Kim, M., Ritschel, T., Grosch, T., Dachsbacher, C., et al. (2009). Perceptual Influence of Approximate Visibility in Indirect Illumination. In Symposium on Applied Perception in Graphics and Visualization (APGV). New York: ACM.


Cite as: https://hdl.handle.net/11858/00-001M-0000-000F-19C8-1
Abstract
In this paper 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.