Results 1 to 10 of about 11,376 (115)

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, Ilya Balmages, Janis Liepins, Stivens Zolins, Dmitrijs Bliznuks, Renars Broks, Renars Broks, Ilze Lihacova, Alexey Lihachev   +8 more
doaj   +2 more sources

The Methodology of Adaptive Levels of Interval for Laser Speckle Imaging [PDF]

Journal of Imaging
A 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
doaj   +2 more sources

Adapted Correlation Methods for Laser Speckle Imaging of Microbial Activity: Evaluation and Rationale [PDF]

Sensors
The 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, Katrina Smite, Dmitrijs Bļizņuks, Aigars Reinis, Alexey Lihachev, Ilze Lihacova   +5 more
doaj   +2 more sources

Laser speckle imaging for early detection of microbial colony forming units. [PDF]

Biomed Opt Express, 2021
Balmages I, Liepins J, Zolins S, Bliznuks D, Lihacova I, Lihachev A.   +5 more
europepmc   +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, Shuhao Shen, Anqi Qiu, Nanguang Chen   +3 more
doaj   +1 more source

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, Shuhao Shen, Anqi Qiu, Nanguang Chen   +3 more
doaj   +1 more source

Real-Time Laser Speckle Imaging of Blood Flow with High Gray Level and High Resolution

Shanghai Jiaotong Daxue xuebao, 2023
Laser speckle contrast imaging (LSCI) is a large measurement ranging, real-time, high spatial resolution optical imaging method. Exisiting reserches show that the low gray level (8-bit) and low resolution (752×480 pixels) camera can effectively monitor ...
ZHANG Zelong, ZHANG Yingchao, WU Bo, DONG Wei, FAN Youben
doaj   +1 more source

Compound Speckle Reduction in Laser Imaging Systems by Using a Vibrating Multimode Fiber and a Tracked Moving Flexible DOE Loop

IEEE Access, 2021
The speckle phenomenon produced by coherent waves interfering with each other is undesirable in laser imaging systems. For each of the laser speckle reduction methods in the literature, it is difficult to reduce speckle to an extremely low level (<
Jun Zhou, Zichun Le, Zongshen Liu, Yanxin Dai, Yanyu Guo, Jiayu Deng, Jiapo Li   +6 more
doaj   +1 more source

Real-time quantification of bowel perfusion using Laparoscopic Laser Speckle Contrast Imaging (LSCI) in a porcine model

BMC Surgery, 2023
Background/purpose Real-time quantification of tissue perfusion can improve intraoperative surgical decision making. Here we demonstrate the utility of Laser Speckle Contrast Imaging as an intra-operative tool that quantifies real-time regional ...
Saloni Mehrotra, Yao Z. Liu, Chibueze A. Nwaiwu, Vasiliy E. Buharin, Roman Stolyarov, Steven D. Schwaitzberg, Matthew F. Kalady, Peter C. W. Kim   +7 more
doaj   +1 more source

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, Yuemei Zhao, Weitao Li, Zhiyu Qian, Lidong Xing   +4 more
doaj   +1 more source