Digital processing of laser speckle images of flows

Nataliya D. Kozintseva; Arkady S. Abdurashitov; Valery V. Tuchin

doi:10.1117/12.2565567

9 April 2020 Digital processing of laser speckle images of flows

Nataliya D. Kozintseva, Arkady S. Abdurashitov, Valery V. Tuchin

Proceedings Volume 11457, Saratov Fall Meeting 2019: Optical and Nano-Technologies for Biology and Medicine; 114571T (2020) https://doi.org/10.1117/12.2565567
Event: Saratov Fall Meeting 2019: VII International Symposium on Optics and Biophotonics, 2019, Saratov, Russian Federation

Abstract

Nowadays methods of non-invasive analysis are widely used in medicine, biology and other fields of applied science. One of the most accurate and relatively easy-to-use methods is the laser speckle imaging method. Laser speckle imaging is a powerful method for studying blood flow, especially in weakly scattering media. This method can also be used in tissues that have strong scattering properties, such as skin. Speckle imaging provides a full-speed map of a relatively large area of an object without laser beam scanning, with good temporal and spatial resolutions. In this work, the accuracy of the installation and the decorrelation period are determined by using a phase correlation method. Also, a few digital techniques of speckle image processing to characterize flows are presented and discussed.

Citation Download Citation

Nataliya D. Kozintseva, Arkady S. Abdurashitov, and Valery V. Tuchin "Digital processing of laser speckle images of flows", Proc. SPIE 11457, Saratov Fall Meeting 2019: Optical and Nano-Technologies for Biology and Medicine, 114571T (9 April 2020); https://doi.org/10.1117/12.2565567

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KEYWORDS

Speckle

Capillaries

Speckle pattern

Digital signal processing

Fourier transforms

Laser processing

Microfluidic imaging

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