Detrimental effects of speckle-pixel size matching in laser speckle contrast imaging
Optics Letters, Vol. 33, Issue 24, pp. 2886-2888 (2008)
http://dx.doi.org/10.1364/OL.33.002886
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Abstract
Through a series of simulations and experiments, we demonstrate that the frequently cited criterion of matching speckle size to detector element (pixel) size in laser speckle contrast imaging (LSCI) has the detrimental effect of reducing the contrast and thereby decreasing the variation in the laser speckle contrast image. Unlike quasi-elastic light scattering, where this matching condition has been shown to maximize the signal-to-noise ratio, in LSCI, the minimum speckle size must exceed the Nyquist criterion in order to maximize the contrast of the speckle patterns.
© 2008 Optical Society of America
OCIS Codes
(030.0030) Coherence and statistical optics : Coherence and statistical optics
(030.6140) Coherence and statistical optics : Speckle
(110.6150) Imaging systems : Speckle imaging
(120.3890) Instrumentation, measurement, and metrology : Medical optics instrumentation
(120.6150) Instrumentation, measurement, and metrology : Speckle imaging
ToC Category:
Instrumentation, Measurement, and Metrology
History
Original Manuscript: August 21, 2008
Revised Manuscript: October 2, 2008
Manuscript Accepted: October 24, 2008
Published: December 3, 2008
Virtual Issues
Vol. 4, Iss. 2 Virtual Journal for Biomedical Optics
Citation
Sean J. Kirkpatrick, Donald D. Duncan, and Elaine M. Wells-Gray, "Detrimental effects of speckle-pixel size matching in laser speckle contrast imaging," Opt. Lett. 33, 2886-2888 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-24-2886
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