Quantitative modeling of laser speckle imaging.
- Zakharov P Department of Physics, University of Fribourg, Fribourg, Switzerland. Pavel.Zakharov@unifr.ch
- Völker A
- Buck A
- Weber B
- Scheffold F
- 2006-11-14
Published in:
- Optics letters. - 2006
Computer Simulation
Diagnostic Imaging
Image Interpretation, Computer-Assisted
Lasers
Light
Models, Chemical
Nephelometry and Turbidimetry
Refractometry
Scattering, Radiation
English
We have analyzed the image formation and dynamic properties in laser speckle imaging (LSI) both experimentally and with Monte Carlo simulation. We show for the case of a liquid inclusion that the spatial resolution and the signal itself are both significantly affected by scattering from the turbid environment. Multiple scattering leads to blurring of the dynamic inhomogeneity as detected by LSI. The presence of a nonfluctuating component of scattered light results in the significant increase in the measured image contrast and complicates the estimation of the relaxation time. We present a refined processing scheme that allows a correct estimation of the relaxation time from LSI data.
- Language
-
- English
- Open access status
- green
- Identifiers
-
- DOI 10.1364/ol.31.003465
- PMID 17099751
- Persistent URL
- https://sonar.ch/global/documents/34973
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