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Azimuthal Scattering from Elliptical Hair Fibers

Authors:

Pramook Khungurn,

Steve MarschnerAuthors Info & Claims

ACM Transactions on Graphics (TOG), Volume 36, Issue 2

Article No.: 13, Pages 1 - 23

https://doi.org/10.1145/2998578

Published: 03 April 2017 Publication History

Abstract

The appearance of hair follows from the small-scale geometry of hair fibers, with the cross-sectional shape determining the azimuthal distribution of scattered light. Although previous research has described some of the effects of non-circular cross sections, no accurate scattering models for non-circular fibers exist. This article presents a scattering model for elliptical fibers, which predicts that even small deviations from circularity produce important changes in the scattering distribution and which disagrees with previous approximations for the effects of eccentricity.

To confirm the model’s predictions, new scattering measurements of fibers from a wide range of hair types were made, using a new measurement device that provides a more complete and detailed picture of the light scattered by fibers than was previously possible. The measurements show features that conclusively match the model’s predictions, but they also contain an ideal-specular forward-scattering behavior that is not predicted and has not been fully described before.

The results of this article indicate that an accurate and efficient method for computing scattering in elliptical cylinders—something not provided in this article—is the correct model to use for realistic hair in the future and that the new specular behavior should be included as well.

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Cited By

Kang DBaek ESon SLee YGong TKim H(2024)MIRRORProceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies10.1145/36314207:4(1-27)Online publication date: 12-Jan-2024
https://dl.acm.org/doi/10.1145/3631420
Trunz EKlein JMüller JBode LSarlette RWeinmann MKlein R(2024)Neural inverse procedural modeling of knitting yarns from imagesComputers and Graphics10.1016/j.cag.2023.12.013118:C(161-172)Online publication date: 1-Feb-2024
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Xia MWalter BHery CMaury OMichielssen EMarschner S(2023)A Practical Wave Optics Reflection Model for Hair and FurACM Transactions on Graphics10.1145/359244642:4(1-15)Online publication date: 26-Jul-2023
https://dl.acm.org/doi/10.1145/3592446
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Index Terms

Azimuthal Scattering from Elliptical Hair Fibers
1. Computing methodologies
  1. Computer graphics
    1. Rendering
      1. Reflectance modeling
2. General and reference
  1. Cross-computing tools and techniques
    1. Measurement

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Published In

cover image ACM Transactions on Graphics

ACM Transactions on Graphics Volume 36, Issue 2

April 2017

168 pages

ISSN:0730-0301

EISSN:1557-7368

DOI:10.1145/3068851

Editor:
Kavita Bala
Cornell University

Issue’s Table of Contents

Copyright © 2017 ACM.

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Publication History

Published: 03 April 2017

Accepted: 01 November 2016

Revised: 01 October 2016

Received: 01 April 2015

Published in TOG Volume 36, Issue 2

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Cited By

Kang DBaek ESon SLee YGong TKim H(2024)MIRRORProceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies10.1145/36314207:4(1-27)Online publication date: 12-Jan-2024
https://dl.acm.org/doi/10.1145/3631420
Trunz EKlein JMüller JBode LSarlette RWeinmann MKlein R(2024)Neural inverse procedural modeling of knitting yarns from imagesComputers and Graphics10.1016/j.cag.2023.12.013118:C(161-172)Online publication date: 1-Feb-2024
https://dl.acm.org/doi/10.1016/j.cag.2023.12.013
Xia MWalter BHery CMaury OMichielssen EMarschner S(2023)A Practical Wave Optics Reflection Model for Hair and FurACM Transactions on Graphics10.1145/359244642:4(1-15)Online publication date: 26-Jul-2023
https://dl.acm.org/doi/10.1145/3592446
Shen YSaito SWang ZMaury OWu CHodgins JZheng YNam G(2023)CT2Hair: High-Fidelity 3D Hair Modeling using Computed TomographyACM Transactions on Graphics10.1145/359210642:4(1-13)Online publication date: 26-Jul-2023
https://dl.acm.org/doi/10.1145/3592106
Zhu JJarabo AAliaga CYan LChiang M(2023)A Realistic Surface-based Cloth Rendering ModelACM SIGGRAPH 2023 Conference Proceedings10.1145/3588432.3591554(1-9)Online publication date: 23-Jul-2023
https://dl.acm.org/doi/10.1145/3588432.3591554
KT AJarabo AAliaga CChiang MMaury OHery CNarayanan PNam G(2023)Accelerating Hair Rendering by Learning High‐Order Scattered RadianceComputer Graphics Forum10.1111/cgf.1489542:4Online publication date: 26-Jul-2023
https://doi.org/10.1111/cgf.14895
Kim TRushmeier HDorsey JNowrouzezahrai DSyed RJarosz WDarke A(2022)Countering Racial Bias in Computer Graphics ResearchACM SIGGRAPH 2022 Talks10.1145/3532836.3536263(1-2)Online publication date: 27-Jul-2022
https://dl.acm.org/doi/10.1145/3532836.3536263
Huang WHullin MHanika J(2022)Scattering from Elliptical Hair Fibers Based on Microfacet TheoryACM SIGGRAPH 2022 Posters10.1145/3532719.3543236(1-2)Online publication date: 27-Jul-2022
https://dl.acm.org/doi/10.1145/3532719.3543236
Huang WMerzbach SCallenberg CStavenga DHullin M(2022)Rendering Iridescent Rock Dove Neck FeathersACM SIGGRAPH 2022 Conference Proceedings10.1145/3528233.3530749(1-8)Online publication date: 27-Jul-2022
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Zhu JZhao SWang LXu YYan L(2022)Practical level-of-detail aggregation of fur appearanceACM Transactions on Graphics10.1145/3528223.353010541:4(1-17)Online publication date: 22-Jul-2022
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