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Proceedings Paper

Using multispectral information for 3D reconstruction
Author(s): Al Amin Mansouri; Alexandra Lathuiliere; Yvon Voisin; Franck S. Marzani
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Paper Abstract

We describe in this paper a stereoscopic system based on a multispectral camera and a projector. To be used, this system must be calibrated. This starts by a geometrical calibration of the stereoscopic set using a weak calibration. It is also necessary to know the spectral response of each element in the acquisition chain, from the projector to the camera. Then, image acquisition can begin. To acquire a multi-spectral image, we have just to use the projector to send a luminous pattern on the scene. The projection of the pattern in the image is detected and labeled since the projector was characterized during the calibration step. Finally, we can obtain the 3D position of the different parts of the luminous pattern on the scene by using triangulation. Moreover, a spectral reflectance can be associated to each of them. The colorimetric accuracy obtained by a multispectral camera is totally improved compared with a color camera.

Paper Details

Date Published: 24 February 2005
PDF: 6 pages
Proc. SPIE 5679, Machine Vision Applications in Industrial Inspection XIII, (24 February 2005); doi: 10.1117/12.592345
Show Author Affiliations
Al Amin Mansouri, Le2i-CNRS, Univ. de Bourgogne (France)
Alexandra Lathuiliere, Le2i-CNRS, Univ. de Bourgogne (France)
Yvon Voisin, Le2i-CNRS, Univ. de Bourgogne (France)
Franck S. Marzani, Le2i-CNRS, Univ. de Bourgogne (France)

Published in SPIE Proceedings Vol. 5679:
Machine Vision Applications in Industrial Inspection XIII
Jeffery R. Price; Fabrice Meriaudeau, Editor(s)

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