Results 41 to 50 of about 13,509 (286)

A quantitative laser speckle-based velocity prediction approach using machine learning

open access: yes, 2023
Laser speckle contrast imaging (LSCI) can be applied to non-invasive blood perfusion measurement with high resolution and fast speed. However, it is lack of measurement accuracy.
Wu, Shuicai   +11 more
core   +1 more source

A new simulation method for laser speckle imaging to investigate hemodynamics [PDF]

open access: yesE3S 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
doaj   +1 more source

Laser speckle contrast imaging compared with indocyanine green in renal perfusion of a porcine model

open access: yesCurrent Urology, 2023
. Background. When viewed under near-infrared light, indocyanine green (ICG) signal for kidney perfusion can be utilized in partial nephrectomy. Laser speckle contrast imaging (LSCI) uses coherent light to detect perfusion during real-time laparoscopic ...
Jonathan Noël   +10 more
doaj   +1 more source

High speed perfusion imaging based on laser speckle fluctuations [PDF]

open access: yes, 2010
Noninvasive methods to visualize blood flow in tissue are important in the clinical environment. Most methods use dynamic speckles to measure the level of perfusion.
Draijer, Matthijs Johannes
core   +1 more source

Calculate Speckle Contrast

open access: yes, 2022
MATLAB functions for calculating spatial and temporal speckle contrast for performing laser speckle contrast imaging.
Colin Sullender
core   +1 more source

Optimizing the precision of laser speckle contrast imaging

open access: yesScientific Reports, 2023
AbstractLaser speckle contrast imaging (LSCI) is a rapidly developing technology broadly applied for the full-field characterization of tissue perfusion. Over the recent years, significant advancements have been made in interpreting LSCI measurements and improving the technique’s accuracy. On the other hand, the method’s precision has yet to be studied
González Olmos, Alberto   +4 more
openaire   +3 more sources

Modelling movement artefacts in handheld laser speckle contrast imaging

open access: yes, 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
core   +1 more source

Coherent Matrix-Based Approach for Evaluation of First-Order Speckle Intensity Statistics and Its Application for Speckle Suppression

open access: yesIEEE 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
doaj   +1 more source

Underwater environment laser ghost imaging based on Walsh speckle patterns

open access: yesFrontiers in Physics, 2023
Underwater imaging is a challenging task because of the effects of scattering and absorption in water. Ghost imaging (GI) has attracted increasing attention because of its simple structure, long range, and achievability under weak light intensity.
Mochou Yang, Yi Wu, Guoying Feng
doaj   +1 more source

Robustness Research of Center Coordinate Value for Speckle Contour and Denoising Algorithm Implementation [PDF]

open access: yesZhengzhou Daxue xuebao. Gongxue ban, 2021
The combination of monocular vision and laser spot could measure the depth information.The laser spot was irradiated on the surface of the object to be measured,after imaging by CCD camera,it would be generally elliptical spot,the accuracy of the ...
Zhu Xinglong   +3 more
doaj   +1 more source

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