Uniaxial three-dimensional shape measurement with projector defocusing

Ying Xu; Song Zhang

doi:10.1117/1.OE.51.2.023604

9 March 2012 Uniaxial three-dimensional shape measurement with projector defocusing

Ying Xu, Song Zhang

Author Affiliations +

Optical Engineering, Vol. 51, Issue 2, 023604 (March 2012). https://doi.org/10.1117/1.OE.51.2.023604

Abstract

Our study shows that the phase error caused by improperly defocused binary structured patterns correlates to the depth z. This finding leads to a novel uniaxial three-dimensional shape measurement technique without triangulation. Since the measurement can be performed from the same viewing angle, this proposed method overcomes some limitations of the triangulation-based techniques, such as the problem of measuring deep holes. Our study explains the principle of the technique and presents some experimental results to verify its feasibility.

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Ying Xu and Song Zhang "Uniaxial three-dimensional shape measurement with projector defocusing," Optical Engineering 51(2), 023604 (9 March 2012). https://doi.org/10.1117/1.OE.51.2.023604

Published: 9 March 2012

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