Digital Shearing Method for Three-Dimensional Data Extraction in Holographic Particle Image Velocimetry
Applied Optics, Vol. 42, Issue 32, pp. 6458-6464 (2003)
http://dx.doi.org/10.1364/AO.42.006458
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Abstract
We report a new digital shearing method for extracting the three-dimensional displacement vector data from double-exposure holograms. With this method we can manipulate both the phase and the amplitude of the recorded signal, which, like optical correlation analysis, is inherently immune to imaging aberration. However, digital shearing is not a direct digital implementation of optical correlation, and a considerable saving in computation time results. We demonstrate the power of the method by matlab simulation and discuss its performance with reference to optical analysis.
© 2003 Optical Society of America
OCIS Codes
(070.5040) Fourier optics and signal processing : Phase conjugation
(090.2880) Holography : Holographic interferometry
(100.2650) Image processing : Fringe analysis
(100.5010) Image processing : Pattern recognition
(350.4990) Other areas of optics : Particles
Citation
Hui Yang, Neil Halliwell, and Jeremy Coupland, "Digital Shearing Method for Three-Dimensional Data Extraction in Holographic Particle Image Velocimetry," Appl. Opt. 42, 6458-6464 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-32-6458
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