Results 21 to 30 of about 6,108,061 (222)
Handheld motion stabilized laser speckle imaging.
Biomedical Optics Express, 2019 Laser speckle imaging (LSI) is a wide-field, noninvasive optical technique that allows researchers and clinicians to quantify blood flow in a variety of applications.
Ben S. Lertsakdadet +4 more
semanticscholar +1 more source
SPECKLE IMAGING EXCLUDES LOW-MASS COMPANIONS ORBITING THE EXOPLANET HOST STAR TRAPPIST-1 [PDF]
, 2016 We have obtained the highest-resolution images available of TRAPPIST-1 using the Gemini-South telescope and our speckle imaging camera. Observing at 692 and 883 nm, we reached the diffraction limit of the telescope providing a best resolution of 27 mas ...
S. Howell +6 more
semanticscholar +1 more source
bioRxiv, 2019 Utilizing a high-speed camera and recording back-scattered laser light at more than 20,000 frames per second, we introduce the first wide-field dynamic laser speckle imaging (DLSI) in which we are able to quantify the laser speckleintensity temporal auto-
D. Postnov +4 more
semanticscholar +1 more source
Fourier transforms for fast and quantitative Laser Speckle Imaging
Scientific Reports, 2019 Laser speckle imaging is a powerful imaging technique that visualizes microscopic motion within turbid materials. At current two methods are widely used to analyze speckle data: one is fast but qualitative, the other quantitative but computationally ...
J. Buijs, J. Gucht, J. Sprakel
semanticscholar +1 more source
European Heart Journal-Cardiovascular Imaging, 2018 The EACVI/ASE/Industry Task Force to standardize deformation imaging prepared this consensus document to standardize definitions and techniques for using two-dimensional (2D) speckle tracking echocardiography (STE) to assess left atrial, right ...
L. Badano +37 more
semanticscholar +1 more source
Deep speckle correlation: a deep learning approach toward scalable imaging through scattering media [PDF]
Optica, 2018 Imaging through scattering is an important yet challenging problem. Tremendous progress has been made by exploiting the deterministic input–output “transmission matrix” for a fixed medium.
Yunzhe Li, Yujia Xue, L. Tian
semanticscholar +1 more source
Vision‐Based Natural Frequency Identification Using Laser Speckle Imaging and Parallel Computing
Comput. Aided Civ. Infrastructure Eng., 2018 This study focuses on the identification of the natural frequencies of structures through the analysis of the speckle pattern that a laser creates and a camera records.
KyeongTaek Park, M. Torbol, Sehwan Kim
semanticscholar +1 more source
Customizing Speckle Intensity Statistics [PDF]
Optica, Vol. 5, Issue 5, pp. 595-600 (2018), 2017 We develop a general method for customizing the intensity statistics of speckle patterns on a target plane. By judiciously modulating the phase-front of a monochromatic laser beam, we experimentally generate speckle patterns with arbitrarily-tailored intensity probability-density functions. Relative to Rayleigh speckles, our customized speckles exhibit
arxiv +1 more source
Laser Speckle Imaging to Monitor Microvascular Blood Flow: A Review
IEEE Reviews in Biomedical Engineering, 2016 Laser speckle is a complex interference phenomenon that can easily be understood, in concept, but is difficult to predict mathematically, because it is a stochastic process.
Pedro G. Vaz +4 more
semanticscholar +1 more source
Molecular Oncology, EarlyView.Large multidimensional digital images of cancer tissue are becoming prolific, but many challenges exist to automatically extract relevant information from them using computational tools. We describe publicly available resources that have been developed jointly by expert and non‐expert computational biologists working together during a virtual hackathon
Sandhya Prabhakaran +16 more
wiley +1 more source