Novel phase unwrapping algorithm of DSPI for complex and discontinuous structure

Shuhai Jia; Xin Wang; Junwu Zhao

doi:10.1117/12.574874

10 February 2005 Novel phase unwrapping algorithm of DSPI for complex and discontinuous structure

Shuhai Jia, Xin Wang, Junwu Zhao

Proceedings Volume 5638, Optical Design and Testing II; (2005) https://doi.org/10.1117/12.574874
Event: Photonics Asia, 2004, Beijing, China

Abstract

A novel phase unwrapping algorithm of DSPI for complex structure is proposed in this paper. An image of the object to be measured with very high contrast can be obtained by the subtraction of two speckle pattern interferograms, whose optical phases are opposite. The complete image area of object to be measured can be correctly obtained from this high contrast image. By controlling the phase unwrapping procedure to be inside the image area of the object, the wrapped phase map of complex structure can be unwrapped. This novel phase unwrapping algorithm makes DSPI be able to be used to measure the complex structure in practical engineering, and will enlarge the application field of DSPI.

Citation Download Citation

Shuhai Jia, Xin Wang, and Junwu Zhao "Novel phase unwrapping algorithm of DSPI for complex and discontinuous structure", Proc. SPIE 5638, Optical Design and Testing II, (10 February 2005); https://doi.org/10.1117/12.574874

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