Detrimental effects of speckle-pixel size matching in laser speckle contrast imaging

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...

Full description

Saved in:
Bibliographic Details
Published in:Optics letters 2008-12, Vol.33 (24), p.2886-2888
Main Authors: KIRKPATRICK, Sean J, DUNCAN, Donald D, WELLS-GRAY, Elaine M
Format: Article
Language:English
Subjects:
Algorithms
Biological and medical sciences
Computer Simulation
Diagnostic Imaging - instrumentation
Diagnostic Imaging - methods
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
Fundamental areas of phenomenology (including applications)
General aspects, investigation technics, apparatus
Image Interpretation, Computer-Assisted - methods
Imaging and optical processing
Lasers
Light
Models, Statistical
Models, Theoretical
Optics
Optics and Photonics
Physics
Scattering, Radiation
Speckle and moire patterns
Time Factors
Tissues, organs and organisms biophysics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0146-9592
1539-4794
DOI:10.1364/ol.33.002886