Results 21 to 30 of about 41,901 (252)
Journal of Open Research Software, 2017 This paper describes OpenOpticalFlow, an open source optical flow program in Matlab for extraction of high-resolution velocity fields from various flow visualization images.
Tianshu Liu
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Frontiers in Earth Science, 2022 The possible use of both radiography and ultrasonography to visualise flow dynamics in cohesive sediments, also known as fluid mud, has been assessed. Ultimately, these techniques are intended to enable the application of Particle Image Velocimetry (PIV)
Bart Brouwers +4 more
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Dual Illumination Planar Doppler Velocimetry using a Single Camera [PDF]
, 2003 A Planar Doppler Velocimetry (PDV) illumination system has been designed which is able to generate two beams, separated in frequency by about 600 MHz. This allows a common-path imaging head to be constructed, using a single imaging camera instead of ...
Nobes, David S. +3 more
core +1 more source
Adaptively monitoring streamflow using a stereo computer vision system [PDF]
Hydrology and Earth System Sciences, 2023 The gauging of free surface flows in waterways provides the foundation for monitoring and managing the water resources of built and natural environments.
N. R. Hutley +7 more
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Single camera three component planar velocity measurements using two-frequency planar Doppler velocimetry (2ν-PDV) (2012) [PDF]
, 2006 Two-frequency planar Doppler velocimetry (2ν-PDV) is used in conjunction with imaging fibre bundles to make time-averaged three component velocity measurements using a single CCD camera and iodine cell. In this scheme the flow is sequentially illuminated
Charrett, Thomas O. H., Tatam, Ralph P.
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Instantaneous, three-component planar Doppler velocimetry using imaging fibre bundles [PDF]
, 2004 This paper describes a planar Doppler velocimetry (PDV) technique that is capable of measuring the three, instantaneous and time average components of velocity over two spatial dimensions using a single pair of signal and reference cameras.
Nobes, David S. +2 more
core +1 more source
An experimental study of particle sedimentation using ultrasonic speckle velocimetry [PDF]
, 2010 Ultrasonic speckle velocimetry (USV) is a non-invasive technique that allows the measurement of fluid velocity in flow and also that of powders under sedimentation.
Delaunay, Thomas +2 more
core +1 more source
Objective speckle velocimetry for autonomous vehicle odometry [PDF]
, 2012 Speckle velocimetry is investigated as a means of determining odometry data with potential for application on autonomous robotic vehicles. The technique described here relies on the integration of translation measurements made by normalized cross ...
Charrett, Thomas O. H. +3 more
core +1 more source
Imaging single-cell blood flow in the smallest to largest vessels in the living retina
eLife, 2019 Tissue light scatter limits the visualization of the microvascular network deep inside the living mammal. The transparency of the mammalian eye provides a noninvasive view of the microvessels of the retina, a part of the central nervous system.
Aby Joseph +2 more
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EVALUATION OF AIRBORNE IMAGE VELOCIMETRY APPROACHES USING LOW-COST UAVS IN RIVERINE ENVIRONMENTS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020 Traditional flow velocity measurements in natural environments require contact with the fluid and are usually costly, time-consuming and, sometimes, even dangerous.
F. Ioli +4 more
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