Flexible method for structured light system calibration

Wei Gao; Liang Wang; Zhanyi Hu

doi:10.1117/1.2969118

Abstract

We propose a flexible technique to easily calibrate a structured light system, in which only two patterns are required: a paper checkerboard printed on a laser printer and attached to a surface plane, and a pattern image of a checkerboard, which is projected on the surface plane by a LCD projector. We treat the projector as a second camera; then the problem of calibrating the structure light system becomes equivalent to calibrating a stereovision system. The key to our technique is to make the projector able to see the calibration checkerboard like a camera. For that purpose, two approaches are proposed, called the black-and-white checkerboard method and the red-and-blue checkerboard method. Both computer simulation and real data are used to test the proposed technique, and very good results are obtained.

Citation Download Citation

Wei Gao, Wei Gao, Liang Wang, Liang Wang, Zhanyi Hu, Zhanyi Hu, } "Flexible method for structured light system calibration," Optical Engineering 47(8), 083602 (1 August 2008). https://doi.org/10.1117/1.2969118 . Submission:

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