Inverse Polarization Raytracing: Estimating Surface Shapes of Transparent Objects

Authors:
Daisuke Miyazaki;Katsushi Ikeuchi
Affiliations:
University of Tokyo;University of Tokyo
Venue:
CVPR '05 Proceedings of the 2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'05) - Volume 2 - Volume 02
Year:
2005

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Abstract

We propose a novel method for estimating the surface shapes of transparent objects by analyzing the polarization state of the light. Existing methods do not fully consider the reflection, refraction, and transmission of the light occurring inside a transparent object. We employ a polarization raytracing method to compute both the path of the light and its polarization state. Our proposed iterative computation method estimates the surface shape of the transparent object by minimizing the difference between the polarization data rendered by the polarization raytracing method and the polarization data obtained from a real object.