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Perceptual influence of approximate visibility in indirect illumination

Published: 06 October 2009 Publication History

Abstract

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.

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    Published In

    cover image ACM Transactions on Applied Perception
    ACM Transactions on Applied Perception  Volume 6, Issue 4
    September 2009
    63 pages
    ISSN:1544-3558
    EISSN:1544-3965
    DOI:10.1145/1609967
    Issue’s Table of Contents
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    Publication History

    Published: 06 October 2009
    Accepted: 01 August 2009
    Received: 01 July 2009
    Published in TAP Volume 6, Issue 4

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    Author Tags

    1. Global illumination
    2. perception
    3. visibility

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