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On the use of video projectors for three-dimensional scanning
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Paper Abstract

Structured light projection is one of the most useful methods for accurate three-dimensional scanning. Video projectors are typically used as the illumination source. However, because video projectors are not designed for structured light systems, some considerations such as gamma calibration must be taken into account. In this work, we present a simple method for gamma calibration of video projectors. First, the experimental fringe patterns are normalized. Then, the samples of the fringe patterns are sorted in ascending order. The sample sorting leads to a simple three-parameter sine curve that is fitted using the Gauss-Newton algorithm. The novelty of this method is that the sorting process removes the effect of the unknown phase. Thus, the resulting gamma calibration algorithm is significantly simplified. The feasibility of the proposed method is illustrated in a three-dimensional scanning experiment.

Paper Details

Date Published: 24 August 2017
PDF: 5 pages
Proc. SPIE 10395, Optics and Photonics for Information Processing XI, 103950C (24 August 2017); doi: 10.1117/12.2273252
Show Author Affiliations
Rigoberto Juarez-Salazar, CONACYT-IPN-CITEDI (Mexico)
Victor H. Diaz-Ramirez, IPN-CITEDI (Mexico)
Carlos Robledo-Sanchez, Benemérita Univ. Autónoma de Puebla (Mexico)
Gerardo Diaz-Gonzalez, Univ. Tecnologica de la Mixteca (Mexico)


Published in SPIE Proceedings Vol. 10395:
Optics and Photonics for Information Processing XI
Khan M. Iftekharuddin; Abdul A. S. Awwal; Mireya García Vázquez; Andrés Márquez; Víctor H. Diaz-Ramirez, Editor(s)

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