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High-speed three-dimensional shape measurements of objects with laser speckles and acousto-optical deflection |
Optics Letters, Vol. 36, Issue 16, pp. 3097-3099 (2011)
http://dx.doi.org/10.1364/OL.36.003097
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Abstract
Many three-dimensional (3D) shape measurement techniques in stereophotogrammetry with temporal coded structured illumination are limited to static scenes because the time for measurement is too long in comparison to the object speed. The measurement of moving objects result in erroneous reconstructions. This is apparent to reduce measurement time to overcome this limitation, which is often done by increasing the projection rate for illumination while shrinking the amount of images taken for reconstruction. The projection rate limits most applications in its speed because digital light processing (DLP) projectors, which are widely used, bring a limited projection rate along. Our approach, in contrast, does not take a DLP. Instead we use laser speckles as projected patterns which are switched using an acousto-optical deflector. The projection rate is
© 2011 Optical Society of America
OCIS Codes
(100.6890) Image processing : Three-dimensional image processing
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.4630) Instrumentation, measurement, and metrology : Optical inspection
(150.6910) Machine vision : Three-dimensional sensing
ToC Category:
Instrumentation, Measurement, and Metrology
History
Original Manuscript: June 7, 2011
Revised Manuscript: July 5, 2011
Manuscript Accepted: July 12, 2011
Published: August 8, 2011
Virtual Issues
Vol. 6, Iss. 9 Virtual Journal for Biomedical Optics
Citation
Martin Schaffer, Marcus Grosse, Bastian Harendt, and Richard Kowarschik, "High-speed three-dimensional shape measurements of objects with laser speckles and acousto-optical deflection," Opt. Lett. 36, 3097-3099 (2011)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-36-16-3097
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