Automated Power Control for Mobile Laser Speckle Imaging System
نویسندگان
چکیده
منابع مشابه
Photothermal laser speckle imaging.
The analysis of speckle contrast in a time-integrated speckle pattern enables visualization of superficial blood flow in exposed vasculature, a method we call laser speckle imaging (LSI). With current methods, LSI does not enable visualization of subsurface or small vasculature, because of optical scattering by stationary structures. In this work we propose a new technique called photothermal L...
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We demonstrate an endoscopic imaging system for microscopic flow measurement (for example blood flow in tissue) using laser speckle contrast imaging. Computational imaging is used to reject sub-surface scattering and eliminates erroneous flow speed estimation. OCIS codes: (110.6150) Speckle imaging; (110.1758) Computational imaging; (170.2150) Endoscopic imaging
متن کاملQuantitative modeling of laser speckle imaging.
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...
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Laser speckle imaging (LSI) enables measurement of relative changes in blood flow in biological tissues. We postulate that a point-of-care form factor will lower barriers to routine clinical use of LSI. Here, we describe a first-generation handheld LSI device based on a tablet computer. The coefficient of variation of speckle contrast was <2% after averaging imaging data collected over an acqui...
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ژورنال
عنوان ژورنال: IEEE Embedded Systems Letters
سال: 2009
ISSN: 1943-0663,1943-0671
DOI: 10.1109/les.2010.2040193