Tools for classification of growing/non-growing bacterial colonies using laser speckle imaging [PDF]
Frontiers in Microbiology, 2023 Prior research has indicated the feasibility of assessing growth—associated activity in bacterial colonies through the application of laser speckle imaging techniques.
Ilya Balmages +8 more
doaj +2 more sources
Confocal laser speckle autocorrelation imaging of dynamic flow in microvasculature
Opto-Electronic Advances, 2022 Laser speckle imaging has been widely used for in-vivo visualization of blood perfusion in biological tissues. However, existing laser speckle imaging techniques suffer from limited quantification accuracy and spatial resolution.
E Du +3 more
doaj +3 more sources
The Methodology of Adaptive Levels of Interval for Laser Speckle Imaging [PDF]
Journal of ImagingA methodology is proposed for use in the laser speckle imaging field. This methodology modified the graphical and numerical speckle pattern imaging methods to improve their extraction and discrimination capabilities when processing the embedded temporal ...
Ali A. Al-Temeemy
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Adapted Correlation Methods for Laser Speckle Imaging of Microbial Activity: Evaluation and Rationale [PDF]
SensorsThe laser speckle technique provides a non-invasive remote sensing method for monitoring biological dynamics. In this study, we focus on assessing microbial growth through systematic comparison of correlation-based speckle image analysis methods.
Ilya Balmages +5 more
doaj +2 more sources
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).
Choi, Bernard +2 more
core +6 more sources
A ghost imaging framework based on laser mode speckle pattern for underwater environments
Communications EngineeringDue to the complex physical processes found in underwater environments, such as absorption, scattering, and noise, it is challenging to obtain high-quality images using conventional camera-based imaging techniques.
Mo-Chou Yang +3 more
doaj +2 more sources
Laser Speckle Stereo System in Biomedical Imaging
2020 43rd International Convention on Information, Communication and Electronic Technology (MIPRO), 2020 Speckle is an optical interference phenomenon generated by the reflection of a highly coherent beam of light (e.g., laser) on a rough surface. This phenomenon has been applied in several research areas, aiming at the characterization of static surfaces ...
Assunção, P. A. +2 more
core +3 more sources
Laser speckle imaging in the spatial frequency domain [PDF]
Biomedical Optics Express, 2011 Laser Speckle Imaging (LSI) images interference patterns produced by coherent addition of scattered laser light to map subsurface tissue perfusion. However, the effect of longer path length photons is typically unknown and poses a limitation towards ...
Carp, Stefan A +15 more
core +5 more sources
Dual-Wavelength Confocal Laser Speckle Contrast Imaging Using a Deep Learning Approach
PhotonicsThis study developed a novel dual-wavelength confocal laser speckle imaging platform. The system includes both visible and near-infrared lasers and two imaging modes: confocal and wide-field laser speckle contrast imaging.
E Du +10 more
doaj +2 more sources
Surface strain measurement using pulsed laser shearography with fibre-optic imaging bundles [PDF]
, 2008 This thesis describes the development of a shearography instrument for the quantitative measurement of surface strain on dynamic test objects. Shearography is a non-contact, full-field interferometric speckle technique used for the measurement of ...
Francis, Daniel
core +7 more sources