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Robust self-calibration three-dimensional shape measurement in fringe-projection photogrammetry |
Optics Letters, Vol. 38, Issue 5, pp. 694-696 (2013)
http://dx.doi.org/10.1364/OL.38.000694
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Abstract
Commonly, fringe-projection photogrammetry involves two independent stages: system calibration and measurement. The measurement accuracy largely depends on the calibration procedure. However, the results of system calibration may be unstable in different occasions. In this Letter, we propose a robust self-calibration 3D shape measurement in fringe-projection photogrammetry by combining control and measurement points. The control points with known 3D coordinates are provided on the checkerboard, and the measurement points are identified by absolute phase information in the deformed fringes. The introduction of control points in the nonlinear collinearity equations can be regarded as invariant in the optimization procedure, which enhances the measurement robustness. Compared to the binocular model in fringe-projection technique, moreover, multiple-view ray intersection is utilized to reflect the advantage of photogrammetry in the fringe-projection 3D measurement.
© 2013 Optical Society of America
OCIS Codes
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(150.6910) Machine vision : Three-dimensional sensing
(150.1488) Machine vision : Calibration
ToC Category:
Integrated Optics
History
Original Manuscript: October 24, 2012
Revised Manuscript: December 31, 2012
Manuscript Accepted: January 28, 2013
Published: February 25, 2013
Citation
Yong-Liang Xiao, Junpeng Xue, and Xianyu Su, "Robust self-calibration three-dimensional shape measurement in fringe-projection photogrammetry," Opt. Lett. 38, 694-696 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-5-694
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