29 July 2002 Absolute 3D sensor with single fringe-pattern recording
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Proceedings Volume 4900, Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life; (2002); doi: 10.1117/12.484554
Event: Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life, 2002, Novosibirsk, Russian Federation
Abstract
A new depth-from-defocus type co-axial 3-D sensor is proposed that permits shade-free absolute 3-D shape measurement from the contrast information of a frequency-multiplexed single fringe pattern. The Fourier transform method is used for spatial frequency demultiplexing and extracting the fringe contrast. Experimental results are presented that demonstrate the validity of the principle.
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Yoichiro Kasai, Yoko Miyamoto, Mitsuo Takeda, Hideyuki Tanaka, Ruowei Gu, "Absolute 3D sensor with single fringe-pattern recording", Proc. SPIE 4900, Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life, (29 July 2002); doi: 10.1117/12.484554; https://doi.org/10.1117/12.484554
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KEYWORDS
Spatial frequencies

Fringe analysis

Modulation

Fourier transforms

3D metrology

Sensors

Imaging systems

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