9 March 2012 Uniaxial three-dimensional shape measurement with projector defocusing
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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.
© 2012 Society of Photo-Optical Instrumentation Engineers (SPIE)
Ying Xu, 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 . Submission:
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