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Proceedings Paper

On improving the accuracy of structured light systems
Author(s): Peisen S. Huang; Xu Han
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Paper Abstract

We propose a nonlinear calibration method for improving the accuracy of structured light systems that use cameras and projectors. Previously we have developed a systematic method for the calibration of projectors as well as structured light systems for 3-D shape measurement. However, we used only a linear model and did not consider lens distortions of the camera and the projector. As a result, measurement accuracy was limited. In this paper, we develop nonlinear models for both the camera and the projector and apply them to develop a nonlinear algorithm for 3-D shape measurement. The aim is to improve system accuracy by reducing the nonlinear error caused by lens distortion. Experimental results on nonlinear camera and projector calibration, comparison of 3-D measurement errors with linear and nonlinear camera and projector models, as well as 3-D shape measurement of some sample objects are presented.

Paper Details

Date Published: 6 November 2006
PDF: 8 pages
Proc. SPIE 6382, Two- and Three-Dimensional Methods for Inspection and Metrology IV, 63820H (6 November 2006); doi: 10.1117/12.692631
Show Author Affiliations
Peisen S. Huang, Stony Brook Univ. (United States)
Xu Han, Stony Brook Univ. (United States)


Published in SPIE Proceedings Vol. 6382:
Two- and Three-Dimensional Methods for Inspection and Metrology IV
Peisen S. Huang, Editor(s)

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