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A model for anisotropic reflection

Authors:

Alain FournierAuthors Info & Claims

SIGGRAPH '90: Proceedings of the 17th annual conference on Computer graphics and interactive techniques

Pages 273 - 282

https://doi.org/10.1145/97879.97909

Published: 01 September 1990 Publication History

Abstract

A reflection and refraction model for anisotropic surfaces is introduced. The anisotropy is simulated by small cylinders (added or subtracted) distributed on the anisotropic surface. Different levels of anisotropy are achieved by varying the distance between each cylinder and/or rising the cylinders more or less from the surface. Multidirectional anisotropy is modelled by orienting groups of cylinders in different direction. The intensity of the reflected light is computed by determining the visible and illuminated portion of the cylinders, taking self-blocking into account. We present two techniques to compute this in practice. In one the intensity is computed by sampling the surface of the cylinders. The other is an analytic solution. In the case of the diffuse component, the solution is exact. In the case of the specular component, an approximation is developed using a Chebyshev polynomial approximation of the specular term, and integrating the polynomial.This model can be implemented easily within most rendering system, given a suitable mechanism to define and alter surface tangents. The effectiveness of the model and the visual importance of anisotropy are illustrated with some pictures.

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Index Terms

A model for anisotropic reflection
1. Computing methodologies
  1. Computer graphics
    1. Image manipulation
      1. Texturing
    2. Shape modeling
      1. Parametric curve and surface models
      2. Volumetric models
2. Mathematics of computing
  1. Mathematical analysis
    1. Numerical analysis
      1. Computations on polynomials

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cover image ACM Conferences

SIGGRAPH '90: Proceedings of the 17th annual conference on Computer graphics and interactive techniques

September 1990

452 pages

ISBN:0897913442

DOI:10.1145/97879

Chairman:
Forest Baskett

ACM SIGGRAPH Computer Graphics Volume 24, Issue 4
Aug. 1990
377 pages
ISSN:0097-8930
DOI:10.1145/97880
Editor:
Richard J. Beach
Issue’s Table of Contents

Copyright © 1990 ACM.

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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New York, NY, United States

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Published: 01 September 1990

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SIGGRAPH '90 Paper Acceptance Rate 43 of 210 submissions, 20%;

Overall Acceptance Rate 1,822 of 8,601 submissions, 21%

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https://doi.org/10.23919/Eusipco47968.2020.9287669
Qin XChen YWang JYu C(2020)Cross-Dataset Activity Recognition via Adaptive Spatial-Temporal Transfer LearningProceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies10.1145/33698183:4(1-25)Online publication date: 14-Sep-2020
https://dl.acm.org/doi/10.1145/3369818
Zhong WSuo QMa FHou YGupta AQiao CSu L(2020)A Reliability-Aware Vehicular Crowdsensing System for Pothole ProfilingProceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies10.1145/33698153:4(1-26)Online publication date: 14-Sep-2020
https://dl.acm.org/doi/10.1145/3369815
Yang YCao JLiu X(2020)ER-RhythmProceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies10.1145/33698083:4(1-24)Online publication date: 14-Sep-2020
https://dl.acm.org/doi/10.1145/3369808
Luongo AFalster VDoest MLi DRegi FZhang YTosello GNielsen JAanæs HFrisvad J(2017)Modeling the Anisotropic Reflectance of a Surface with Microstructure Engineered to Obtain Visible Contrast After Rotation2017 IEEE International Conference on Computer Vision Workshops (ICCVW)10.1109/ICCVW.2017.27(159-165)Online publication date: Oct-2017
https://doi.org/10.1109/ICCVW.2017.27
Young JPotter C(2014)Remediation in data visualizationCommunication Design Quarterly10.1145/2597469.25974742:2(29-37)Online publication date: 1-Feb-2014
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Sadeghi IBisker ODe Deken JJensen H(2013)A practical microcylinder appearance model for cloth renderingACM Transactions on Graphics10.1145/2451236.245124032:2(1-12)Online publication date: 30-Apr-2013
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Sheikh FMathew SAnders MKaul HHsu SAgarwal AKrishnamurthy RBorkar S(2013)A 2.05 GVertices/s 151 mW Lighting Accelerator for 3D Graphics Vertex and Pixel Shading in 32 nm CMOSIEEE Journal of Solid-State Circuits10.1109/JSSC.2012.222281348:1(128-139)Online publication date: Jan-2013
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Woo APoulin P(2012)BibliographyShadow Algorithms Data Miner10.1201/b11901-9(197-238)Online publication date: 23-Aug-2012
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Akenine-Möller THaines EHoffman N(2011)BibliographyReal-Time Rendering, Third Edition10.1201/b10644-23(921-1002)Online publication date: Mar-2011
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