Results 241 to 250 of about 32,925 (280)

A Frequency-Aware Self-Supervised Framework for MEMS-OCT Denoising. [PDF]

Biosensors (Basel)
Zhang G, Li Z, Zhao H, Peng Z, Xie H.
europepmc   +1 more source

Evaluation of biological activity via biospeckle laser imaging. [PDF]

Biophys Rep
Ansari MZ.
europepmc   +1 more source

Real-time wavelet threshold denoising for laser speckle blood flow imaging. [PDF]

Sci Rep
Zhang L, Yang C, Liu D, Gao X, Li Z, Wang X, Zuo Z, He Z.   +7 more
europepmc   +1 more source

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Laser speckle imaging based on intensity fluctuation modulation

Optics Letters, 2013
We present a method, intensity fluctuation modulation (IFM), to obtain a full-field laser speckle microvessel image. Different from laser speckle contrast analysis, IFM imaging is insensitive to flow velocity and can be used to reconstruct microvessel images with higher spatial resolution and SNR.
Yaguang, Zeng, Mingyi, Wang, Guangping, Feng, Xianjun, Liang, Guojian, Yang   +4 more
openaire   +4 more sources

Interferometric dynamic laser speckle imaging

Biophotonics Congress: Optics in the Life Sciences 2023 (OMA, NTM, BODA, OMP, BRAIN), 2023
We developed interferometric dynamic laser speckle imaging (iDLSI) capable of three-dimensional volumetric measurements of the blood flow. Here, we present the numerical and analytical model for g2,iDLSI(τ) and perform preliminary measurement in the mouse brain.
Sharvari Zilpelwar, Xiaojun Cheng, David A. Boas   +2 more
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Blood velocity measurements using laser speckle imaging

The 26th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2005
Blood velocity measurements in the skin of pigs are reported. Measurements were obtained using laser speckle contrast analysis with a multiple scattering correction. Laser speckle contrast analysis is a rapid technique for obtaining a velocity mapping of perfused tissue.
L W, Winchester, N Y, Chou
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Image synthesis from nonimaged laser-speckle patterns

Optics Letters, 1987
We demonstrate that unspeckled images of coherently illuminated, diffuse objects can be formed from measurements of backscattered laser-speckle intensity. The theoretical basis for this imaging technique is outlined, and results of computer experiments that successfully construct images from digitally simulated laser-speckle measurements are presented.
P S, Idell, J R, Fienup, R S, Goodman
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Efficient Processing of Laser Speckle Contrast Images

IEEE Transactions on Medical Imaging, 2008
Though laser speckle contrast imaging enables the measurement of scattering particle dynamics with high temporal resolution, the subsequent processing has previously been much slower. In prior studies, generating a laser speckle contrast image required about 1 s to process a raw image potentially collected in 10 ms or less.
W James, Tom, Adrien, Ponticorvo, Andrew K, Dunn   +2 more
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