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Real‐Time Polygonal Lighting of Iridescence Effect using Precomputed Monomial‐Gaussians.

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Title: Real‐Time Polygonal Lighting of Iridescence Effect using Precomputed Monomial‐Gaussians.
Authors: Liu, Zhengze1 (AUTHOR) zhengzeliu@zju.edu.cn, Huo, Yuchi1 (AUTHOR) huo.yuchi.sc@gmail.com, Yang, Yinhui2 (AUTHOR) yhyang@zafu.edu.cn, Chen, Jie3 (AUTHOR) chenjieyf@hikvision.com, Wang, Rui1 (AUTHOR) ruiwang@zju.edu.cn
Source: Computer Graphics Forum. Sep2024, Vol. 43 Issue 6, p1-14. 14p.
Subjects: Spherical functions, Metallic films, Thin films, Set functions, Oxide coating
Abstract: The real world consists of mass phenomena, such as iridescence on thin film and metal oxide layers, that is only explicable by wave optics. Existing research can reproduce such effects with simple point lights or low‐frequency environmental lighting. However, it remains a difficult task to efficiently rendering these effects when near‐field, high‐frequency area lights are involved. This paper presents a high‐fidelity, real‐time rendering algorithm for the iridescence effect under polygonal lights. We introduce a novel set of spherical functions, Monomial‐Gaussians, to accurately fit iridescent materials' reflectance. With a precomputed lookup table, the Monomial‐Gaussians are easily integrated over spherical polygons in linear time. Importance sampling of Monomial‐Gaussians is also supported to efficiently reduce Monte‐Carlo error. Our approach produces accurate renderings of the iridescence effect while still preserving high frame rates. [ABSTRACT FROM AUTHOR]
Copyright of Computer Graphics Forum is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Real‐Time Polygonal Lighting of Iridescence Effect using Precomputed Monomial‐Gaussians.
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  Data: <searchLink fieldCode="AR" term="%22Liu%2C+Zhengze%22">Liu, Zhengze</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zhengzeliu@zju.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Huo%2C+Yuchi%22">Huo, Yuchi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> huo.yuchi.sc@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Yang%2C+Yinhui%22">Yang, Yinhui</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> yhyang@zafu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Jie%22">Chen, Jie</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> chenjieyf@hikvision.com</i><br /><searchLink fieldCode="AR" term="%22Wang%2C+Rui%22">Wang, Rui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ruiwang@zju.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Computer+Graphics+Forum%22">Computer Graphics Forum</searchLink>. Sep2024, Vol. 43 Issue 6, p1-14. 14p.
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  Data: <searchLink fieldCode="DE" term="%22Spherical+functions%22">Spherical functions</searchLink><br /><searchLink fieldCode="DE" term="%22Metallic+films%22">Metallic films</searchLink><br /><searchLink fieldCode="DE" term="%22Thin+films%22">Thin films</searchLink><br /><searchLink fieldCode="DE" term="%22Set+functions%22">Set functions</searchLink><br /><searchLink fieldCode="DE" term="%22Oxide+coating%22">Oxide coating</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The real world consists of mass phenomena, such as iridescence on thin film and metal oxide layers, that is only explicable by wave optics. Existing research can reproduce such effects with simple point lights or low‐frequency environmental lighting. However, it remains a difficult task to efficiently rendering these effects when near‐field, high‐frequency area lights are involved. This paper presents a high‐fidelity, real‐time rendering algorithm for the iridescence effect under polygonal lights. We introduce a novel set of spherical functions, Monomial‐Gaussians, to accurately fit iridescent materials' reflectance. With a precomputed lookup table, the Monomial‐Gaussians are easily integrated over spherical polygons in linear time. Importance sampling of Monomial‐Gaussians is also supported to efficiently reduce Monte‐Carlo error. Our approach produces accurate renderings of the iridescence effect while still preserving high frame rates. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Computer Graphics Forum is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1111/cgf.14991
    Languages:
      – Code: eng
        Text: English
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        PageCount: 14
        StartPage: 1
    Subjects:
      – SubjectFull: Spherical functions
        Type: general
      – SubjectFull: Metallic films
        Type: general
      – SubjectFull: Thin films
        Type: general
      – SubjectFull: Set functions
        Type: general
      – SubjectFull: Oxide coating
        Type: general
    Titles:
      – TitleFull: Real‐Time Polygonal Lighting of Iridescence Effect using Precomputed Monomial‐Gaussians.
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            NameFull: Liu, Zhengze
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            NameFull: Huo, Yuchi
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            NameFull: Yang, Yinhui
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            NameFull: Chen, Jie
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            NameFull: Wang, Rui
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          Dates:
            – D: 01
              M: 09
              Text: Sep2024
              Type: published
              Y: 2024
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              Value: 43
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            – TitleFull: Computer Graphics Forum
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