CUED Publications database

Photometric stereo with only two images: A theoretical study and numerical resolution

Quéau, Y and Mecca, R and Durou, J-D and Descombes, X (2016) Photometric stereo with only two images: A theoretical study and numerical resolution. Image and Vision Computing, 57. pp. 175-191.

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Abstract

This work tackles the problem of two-image photometric stereo. This problem constitutes the intermediate case between conventional photometric stereo with at least three images, which is well-posed, and shape-from-shading, which is ill-posed. We first provide a theoretical study of ambiguities arising in this intermediate case. Based on this study, we show that when the albedo is known, disambiguation can be formulated as a binary labeling problem, using integrability and a nonstationary Ising model. The resulting optimization problem is solved efficiently by resorting to the graph cut algorithm. These theoretical and numerical contributions are eventually validated in an application to three-image photometric stereo with shadows.

Item Type: Article
Uncontrolled Keywords: 3D-reconstruction shape-from-shading photometric stereo PDEs numerical analysis optimization graph cut
Subjects: UNSPECIFIED
Divisions: Div F > Machine Intelligence
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 20:03
Last Modified: 12 Oct 2017 01:46
DOI: