Abstract

An advanced carrier squeezing interferometry (CSI) technique is proposed to suppress gamma distortion in fringe projection profilometry. CSI combines phase-shifted fringes into a single spatial-temporal fringe and then extracts the phase from its frequency spectrum. Although it has the property of rejecting high-order harmonics, the traditional CSI technique uses an approximate model that generates extra disturbance lobes in the process of phase extraction from the frequency domain. Therefore, the filter window used to extract the phase has to be very narrow, which results in the extra loss of high-frequency information. In this paper, we improve the approximate model by introducing a phase-correction term and encoding it into the projected standard fringes. Then, there are no extra disturbance lobes in the spectrum, and the acceptable filter window to reject high-order harmonics can be much wider. Thus, it is possible to preserve more high-frequency information in the retrieved phase. We performed simulations and experiments to validate the ability of this method to suppress gamma distortion and preserve high-frequency information as compared to the traditional CSI method.

© 2017 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Harmonics rejection in pixelated interferograms using spatio-temporal demodulation

J. M. Padilla, M. Servin, and J. C. Estrada
Opt. Express 19(20) 19508-19513 (2011)

Profilometry with digital fringe-projection at the spatial and temporal Nyquist frequencies

Moises Padilla, Manuel Servin, and Guillermo Garnica
Opt. Express 25(19) 22292-22302 (2017)

Carrier squeezing interferometry with π/4 phase shift: phase extraction in the presence of multi-beam interference

Jinlong Cheng, Zhishan Gao, Qun Yuan, Kailiang Wang, and Liping Xu
Appl. Opt. 55(8) 1920-1928 (2016)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (15)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (11)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription