Generalised Ambient Reflection Models for Lambertian and Phong Surfaces

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Title Generalised Ambient Reflection Models for Lambertian and Phong Surfaces
Author Zhang, Paul; Gao, Yongsheng
Publication Title Proceedings of the 2009 IEEE International Conference on Image Processing (ICIP 2009)
Editor Lina Karam, Thrasos Pappas
Year Published 2009
Place of publication Los Alamitos, CA
Publisher IEEE
Abstract Ambient reflection is widely present in many applications of computer graphics and image processing, which is traditionally modelled as a constant free from environmental factors. This paper reconsiders ambient reflection modelling of Lambertian and Phong surfaces and calculates it as reflection integrations of infinitesimal incident beams from the environment. It reveals that ambient reflection exists in variable forms for Lambertian surfaces of non-convex objects and Phong surfaces of all objects. For convex objects with Lambertian surfaces, ambient reflectance coefficient is actually the diffuse reflectance coefficient. Generalised ambient reflection models are proposed to calculate ambient reflection using the same reflection model as used in calculation of other reflections. Based on this analysis, new ambient reflection formulations of Lambertian and Phong surfaces are derived to enable efficient computations in computer graphics and image processing.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1109/ICIP.2009.5413812
Copyright Statement Copyright 2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
ISBN 1522-4880
Conference name 2009 IEEE International Conference on Image Processing (ICIP 2009)
Location Cairo, Egypt
Date From 2009-11-07
Date To 2009-11-10
URI http://hdl.handle.net/10072/30001
Date Accessioned 2010-02-23
Date Available 2010-06-03T09:25:33Z
Language en_AU
Research Centre Institute for Integrated and Intelligent Systems
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Computer Graphics; Computer Vision; Image Processing
Publication Type Conference Publications (Full Written Paper - Refereed)
Publication Type Code e1

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