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| vfpamplona@inf.ufrgs.br |
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Manuel
M. Oliveira1 oliveira@inf.ufrgs.br |
Gladimir
V. G. Baranoski2 gvgbaran@curumin.math.uwaterloo.ca |
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ACM Transactions on Graphics.
28 (4), 2009. p. 106:1-12. [DOI]
| Abstract | Downloads | Results | Reference | Acknowledgments |
We introduce a physiologically-based model for pupil light reflex (PLR) and an image-based model for iridal pattern deformation. Our PLR model expresses the pupil diameter as a function of the lighting of the environment, and is described by a delay-differential equation, naturally adapting the pupil diameter even to abrupt changes in light conditions. Since the parameters of our PLR model were derived from measured data, it correctly simulates the actual behavior of the human pupil. Another contribution of our work is a model for realistic deformation of the iris pattern as a function of pupil dilation and constriction. Our models produce high-fidelity appearance effects and can be used to produce real-time predictive animations of the pupil and iris under variable lighting conditions. We assess the predictability and quality of our simulations through comparisons of modeled results against measured data derived from experiments also described in this work. Combined, our models can bring facial animation to new photorealistic standards.
ACM Copyright Notice: © ACM, 2009. This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution. The definitive version was published in ACM TOG, Vol. 28, 4, August 2009 — http://doi.acm.org/10.1145/1559755.1559763.
Vitor F. Pamplona, Manuel M. Oliveira, and Gladimir V. G. Baranoski. "Photorealistic Models for Pupil Light Reflex and Iridal Pattern Deformation". ACM Transactions on Graphics. 28 (4), 2009, p. 106:1-12.
@article{Pamplona:2009:PMP:1559755.1559763,
author = {Pamplona, Vitor F. and Oliveira, Manuel M. and Baranoski, Gladimir V. G.},
title = {Photorealistic models for pupil light reflex and iridal pattern deformation},
journal = {ACM Trans. Graph.},
issue_date = {August 2009},
volume = {28},
issue = {4},
year = {2009},
pages = {106:1--106:12},
articleno = {106},
}
Face animation, Image-based modelling, Iris animation, Photorealism,
Physiologically-based modelling.
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Manuel M. Oliveira acknowledges a CNPq-Brazil fellowship (305613/2007-3). |
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Gladimir V. G. Baranoski acknowledges a NSERC-Canada grant (238337). |