Results 41 to 50 of about 4,592,774 (277)
Transmissive multifocal laser speckle contrast imaging through thick tissue
Journal of Innovative Optical Health Sciences, 2023 Laser speckle contrast imaging (LSCI) is a powerful tool for monitoring blood flow changes in tissue or vessels in vivo, but its applications are limited by shallow penetration depth under reflective imaging configuration.
Ruoyu Chen, Peng Miao, Shanbao Tong
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, 2022 MATLAB functions for calculating spatial and temporal speckle contrast for performing laser speckle contrast imaging.
Colin Sullender
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FOCUS: Flow dynamic and optical property coupled laser speckle imaging for quantitative blood flow mapping [PDF]
APL PhotonicsLaser speckle contrast imaging (LSCI) provides label-free, wide-field blood-flow imaging with high spatiotemporal resolution, but its quantitative interpretation remains challenging because the measured speckle contrast is affected by both tissue optical
Shijie Feng +7 more
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Photonics, 2021 Speckle-free imaging using a multimode fiber has been widely used for imaging systems. Generally, previous work has assumed that all the propagating modes of the fiber are uniformly excited, but the modal power distribution is actually affected by ...
Jun Zhou +8 more
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Laser speckle reduction based on angular diversity induced by Piezoelectric Benders [PDF]
Journal of the European Optical Society-Rapid Publications, 2013 Speckle reduction techniques have been investigated in display systems with coherent light sources. We propose a simple but efficient method to reduce speckle via two fast vibrating piezoelectric benders.
Ouyang G. +4 more
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Modelling movement artefacts in handheld laser speckle contrast imaging
, 2023 Progress has been made in laser speckle contrast imaging (LSCI) of microcirculatory blood flow for biology and medicine. However, the underlying reason for occurrence of movement artefacts (MA) that compromises effective use of LSCI remains largely ...
Steenbergen, Wiendelt +7 more
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A new simulation method for laser speckle imaging to investigate hemodynamics [PDF]
E3S Web of Conferences, 2019 Speckle simulation is a powerful protocol to investigate the properties of speckle and evaluate image processing method. However, only static speckle images can be simulated by available methods without considering time-integrated effect of CCD.
Sang X, Li D, Chen B
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Development of computational algorithms for the analysis of contrast images in laser speckle imaging [PDF]
, 2022 Image processing and analysis acquire and enhance features using mathematical operations over neighboring pixels selected using a predetermined structure with a fixed shape or geometric form.
Eduardo Morales-Vargas
core
Zwitterion-doped liquid crystal speckle reducers for immersive displays and vectorial imaging
Light: Science & Applications, 2023 Lasers possess many attractive features (e.g., high brightness, narrow linewidth, well-defined polarization) that make them the ideal illumination source for many different scientific and technological endeavors relating to imaging and the display of ...
Yihan Jin +6 more
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Effect of vascular structure on laser speckle contrast imaging
Biomedical Optics Express, 2020 Laser speckle contrast imaging (LSCI) is a powerful tool for non-invasive, real-time imaging of blood flow in tissue. However, the effect of tissue geometry on the form of the electric field autocorrelation function and speckle contrast values is yet to be investigated.
Chakameh Z. Jafari +4 more
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