Results 21 to 30 of about 44,997 (341)
IEEE Photonics Journal, 2022 The existing approach for evaluating the statistical characteristics of speckle intensity distribution is applicable only to completely decorrelated laser beams.
Qiyong Xu +7 more
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Italian National Conference on Sensors, 2021 Audio signal acquisition using a laser speckle image is an appealing topic since it provides an accurate and non-contact solution for vibration measurement. However, due to the limitation of camera frame rate and image processing speed, previous research
Nan Wu, S. Haruyama
semanticscholar +1 more source
Speckle free laser imaging [PDF]
Conference on Lasers and Electro-Optics 2012, 2012 Many imaging applications require increasingly bright illumination sources, motivating the replacement of conventional thermal light sources with light emitting diodes (LEDs), superluminescent diodes (SLDs) and lasers. Despite their brightness, lasers and SLDs are poorly suited for full-field imaging applications because their high spatial coherence ...
Redding, Brandon +2 more
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Photothermal laser speckle imaging [PDF]
Optics Letters, 2014 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.
Regan, Caitlin +2 more
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Definitions, 2020 A noninvasive, non-scanning optical imaging technique that provides full-field visualization of blood flow to the tissue being imaged, which provides information about tissue perfusion and the efficiency of disease treatment.
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Laser Speckle Modeling and Simulation for Biophysical Dynamics: Influence of Sample Statistics
Journal of Biomedical Photonics & Engineering, 2017 Laser speckle is a statistical phenomenon and should be treated as such when establishing experimental parameters for using laser speckle techniques to infer information about the dynamics of a coherently illuminated medium, such as biological tissue ...
Kosar Khaksari, Sean J. Kirkpatrick
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Bose-Einstein Condensate in Weak 3d Isotropic Speckle Disorder [PDF]
, 2012 The effect of a weak three-dimensional (3d) isotropic laser speckle disorder on various thermodynamic properties of a dilute Bose gas is considered at zero temperature.
A. Pelster +33 more
core +2 more sources
Magnetomotive laser speckle imaging [PDF]
Journal of Biomedical Optics, 2010 Laser speckle imaging (LSI) involves analysis of reflectance images collected during coherent optical excitation of an object to compute wide-field maps of tissue blood flow. An intrinsic limitation of LSI for resolving microvascular architecture is that its signal depends on relative motion of interrogated red blood cells.
Jeehyun, Kim +2 more
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Enhancement of microvessel in laser speckle image using gaussian kernel template [PDF]
Journal of Innovative Optical Health Sciences, 2019 Laser speckle contrast imaging (LSCI) is an optical imaging method, which can monitor microvascular flow variation directly without addition of any ectogenous dye.
Yameng Zhang +4 more
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Line Scan Spatial Speckle Contrast Imaging and Its Application in Blood Flow Imaging
Applied Sciences, 2021 Laser speckle imaging has been an indispensable tool for visualizing blood flow in biomedical applications. We proposed a novel design of the laser speckle imaging system, which combines confocal illumination and detection with various speckle analysis ...
E Du +3 more
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