Please use this identifier to cite or link to this item:
|Title:||Phase retrieval with a three-frame phase-shifting algorithm with an unknown phase shift|
|Authors:||Tay, C.J. |
|Citation:||Tay, C.J., Quan, C., Chen, L. (2005-03-10). Phase retrieval with a three-frame phase-shifting algorithm with an unknown phase shift. Applied Optics 44 (8) : 1401-1409. ScholarBank@NUS Repository. https://doi.org/10.1364/AO.44.001401|
|Abstract:||A three-frame phase-shifting algorithm with a constant but unknown phase shift is proposed. The algorithm is based on background-intensity removal prior to phase retrieval to eliminate an undetermined factor in a fringe pattern. The proposed method is validated on three-dimensional profilometry by fringe projection and on deformation measurement by means of digital speckle shearing interferometry. For a fringe pattern with slow-varying background intensity, the background removal is achieved in the frequency domain. For a speckle pattern, a background removal technique is integrated with the three-frame algorithm. In this process, manual intervention is minimal, and high computational speed is achieved. In addition, high-frequency phase signals would not be removed in the noise-reduction process as is the case hi the bandpass-filtering technique. Accuracy of the method is discussed. © 2005 Optical Society of America.|
|Source Title:||Applied Optics|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Aug 8, 2018
WEB OF SCIENCETM
checked on Jul 31, 2018
checked on Aug 3, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.