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Proceedings Paper

Phase extraction method with spatial-temporal fringe
Author(s): Ronggang Zhu; Zhe Zhang
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Paper Abstract

Phase extraction technology is widely used in interferometry, structured light 3D vision Sensor and phase deflection measurement. However, in the process of application, the accuracy of phase extraction is often reduced by various disturbances. For example, the high frequency noise in speckle interferometry, nonlinear effects in CCD detectors and Gamma effects in projection or display devices. This paper mainly introduces a method of constructing a picture of spatial-temporal fringes(STF) by phase-shifting fringe patterns. The method combines the N step phase-shifting fringe patterns into a STF pattern that contains both temporal information and spatial information. Then, the phase of original fringe patterns can be obtained by STF pattern. In addition, simulation experiments are carried out to verify the ability of phase extraction of STF pattern to suppress random noise and harmonics. This method will provide useful reference for practical engineering application.

Paper Details

Date Published: 20 December 2019
PDF: 7 pages
Proc. SPIE 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 112095F (20 December 2019); doi: 10.1117/12.2550177
Show Author Affiliations
Ronggang Zhu, Jinling Institute of Technology (China)
Zhe Zhang, Jinling Institute of Technology (China)

Published in SPIE Proceedings Vol. 11209:
Eleventh International Conference on Information Optics and Photonics (CIOP 2019)
Hannan Wang, Editor(s)

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