3 October 1996 Automated fringe analysis profilometry of 3D diffuse objects
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Proceedings Volume 2899, Automated Optical Inspection for Industry; (1996); doi: 10.1117/12.253043
Event: Photonics China '96, 1996, Beijing, China
Abstract
A new technique of the fringe analysis is proposed to automatically measure the 3D object shape. A grating pattern is projected onto an object, and the grating pattern deforms in accordance with the 3D object. This deformed grating image is analyzed by means of subfringe integration algorithm, the phase distribution and the object shape are given at every pixel at measured object. In contrast to FOurier transform profilometry (FTP), this technique processes fringe in its spatial domain instead of the frequency domain, so it is faster and more convenient than FTP.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ming Wang, Jingang Zhong, "Automated fringe analysis profilometry of 3D diffuse objects", Proc. SPIE 2899, Automated Optical Inspection for Industry, (3 October 1996); doi: 10.1117/12.253043; https://doi.org/10.1117/12.253043
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KEYWORDS
Fringe analysis

Moire patterns

Image analysis

Shape analysis

3D metrology

Phase shift keying

Demodulation

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