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What do planar shadows tell about scene geometry?

Bouguet, Jean-Yves and Weber, Markus and Perona, Pietro (1999) What do planar shadows tell about scene geometry? In: 1999 IEEE Computer Society Conference on Computer Vision and Pattern Recognition. IEEE , Piscataway, NJ, pp. 514-520. ISBN 0-7695-0149-4.

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A method for reconstructing 3D scene geometry from a set of projected shadows is presented. It is composed of two stages. First, the scene geometry is retrieved up to three scalar unknowns using only the information contained in the observed shadow edges on the image plane. Then, the three remaining unknowns are computed making use of the known depths at three points. This technique improves upon previous results in that it does not require the presence of a reference plane in the background. A mathematical analysis is presented using dual-space geometry, a formalism that provides adequate tools to carry out all the derivations in a compact and intuitive manner. A linear algorithm based on singular value decomposition (SVD) is presented leading to a closed form solution for reconstruction.

Item Type:Book Section
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Perona, Pietro0000-0002-7583-5809
Additional Information:© 1999 IEEE. Date of Current Version: 06 August 2002.
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INSPEC Accession Number6338069
Record Number:CaltechAUTHORS:20111201-141431171
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Official Citation:Bouguet, J.-Y.; Weber, M.; Perona, P.; , "What do planar shadows tell about scene geometry?," Computer Vision and Pattern Recognition, 1999. IEEE Computer Society Conference on. , vol.1, no., pp.2 vol. (xxiii+637+663), 1999 doi: 10.1109/CVPR.1999.786986 URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:28278
Deposited By: Tony Diaz
Deposited On:05 Dec 2011 17:03
Last Modified:09 Nov 2021 16:55

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