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Proceedings Paper

Three-dimensional shape measurement by means of depth-to-coherence coding of the object shape
Author(s): Vicente Micó; Estela Valero; Zeev Zalevsky; Javier García
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Paper Abstract

In this contribution, we present a novel approach for three-dimensional (3D) mapping that is based in the coding provided by the coherence length of a laser source over the object depth. By using a classical temporal electronic speckle pattern interferometric (T-ESPI) setup, the object depth is encoded into the amplitude of the interference pattern instead of in the phase distribution. After performing phase-shifting method, the object shape is recovered by means of a range image obtained by computing the visibility of the image set of interferograms and where each gray level is representative of a given object depth. Experimental results validate the proposed approach for reflective diffuse objects at different measurement distances.

Paper Details

Date Published: 17 June 2009
PDF: 8 pages
Proc. SPIE 7389, Optical Measurement Systems for Industrial Inspection VI, 73893E (17 June 2009); doi: 10.1117/12.828537
Show Author Affiliations
Vicente Micó, Univ. de Valencia (Spain)
Estela Valero, AIDO (Spain)
Zeev Zalevsky, Bar-Ilan Univ. (Israel)
Javier García, Univ. de Valencia (Spain)

Published in SPIE Proceedings Vol. 7389:
Optical Measurement Systems for Industrial Inspection VI
Peter H. Lehmann, Editor(s)

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