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Polynomial texture maps

Published: 01 August 2001 Publication History
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  • Abstract

    In this paper we present a new form of texture mapping that produces increased photorealism. Coefficients of a biquadratic polynomial are stored per texel, and used to reconstruct the surface color under varying lighting conditions. Like bump mapping, this allows the perception of surface deformations. However, our method is image based, and photographs of a surface under varying lighting conditions can be used to construct these maps. Unlike bump maps, these Polynomial Texture Maps (PTMs) also capture variations due to surface self-shadowing and interreflections, which enhance realism. Surface colors can be efficiently reconstructed from polynomial coefficients and light directions with minimal fixed-point hardware. We have also found PTMs useful for producing a number of other effects such as anisotropic and Fresnel shading models and variable depth of focus. Lastly, we present several reflectance function transformations that act as contrast enhancement operators. We have found these particularly useful in the study of ancient archeological clay and stone writings.

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    cover image ACM Conferences
    SIGGRAPH '01: Proceedings of the 28th annual conference on Computer graphics and interactive techniques
    August 2001
    600 pages
    ISBN:158113374X
    DOI:10.1145/383259
    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: 01 August 2001

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    Author Tags

    1. graphics hardware
    2. illumination
    3. image processing
    4. image-based rendering
    5. reflectance & shading models
    6. texture mapping

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    SIGGRAPH '01 Paper Acceptance Rate 65 of 300 submissions, 22%;
    Overall Acceptance Rate 1,822 of 8,601 submissions, 21%

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