Results 1 to 10 of about 29,509 (254)

An Evaluation of Image Velocimetry Techniques under Low Flow Conditions and High Seeding Densities Using Unmanned Aerial Systems

open access: yesRemote Sensing, 2020
Image velocimetry has proven to be a promising technique for monitoring river flows using remotely operated platforms such as Unmanned Aerial Systems (UAS).
Sophie Pearce   +13 more
doaj   +3 more sources

Particle Image Velocimetry Algorithm Based on Spike Camera Adaptive Integration [PDF]

open access: yesSensors
In particle image velocimetry (PIV), overexposure is particularly common in regions with high illumination. In particular, strong scattering or background reflection at the liquid–gas interface will make the overexposure phenomenon more obvious ...
Xiaoqiang Li   +7 more
doaj   +2 more sources

On the Uncertainty of the Image Velocimetry Method Parameters

open access: yesHydrology, 2020
Image velocimetry is a popular remote sensing method mainly because of the very modest cost of the necessary equipment. However, image velocimetry methods employ parameters that require high expertise to select appropriate values in order to obtain ...
Evangelos Rozos   +4 more
doaj   +3 more sources

Past and current components-based detailing of particle image velocimetry: A comprehensive review [PDF]

open access: yesHeliyon, 2023
Particle image velocimetry has been widely used in various sectors from the automotive to aviation, research, and development, energy, medical, turbines, reactors, electronics, education, refrigeration for flow characterization and investigation. In this
Daniel Rohacs   +6 more
doaj   +2 more sources

Enhanced ultrasound particle image velocimetry (E-uPIV) enables fast flow mapping of microvasculature [PDF]

open access: yesCommunications Engineering
Ultrasound particle image velocimetry (uPIV) has emerged as a widely-used tool for measuring blood flow fields with higher sensitivity and accuracy.
Jingyi Yin   +4 more
doaj   +2 more sources

Digital particle image velocimetry [PDF]

open access: yesExperiments in Fluids, 1991
Digital particle image velocimetry (DPIV) is the digital counterpart of conventional laser speckle velocitmetry (LSV) and particle image velocimetry (PIV) techniques. In this novel, two-dimensional technique, digitally recorded video images are analyzed computationally, removing both the photographic and opto-mechanical processing steps inherent to PIV
Christian E Willert, Morteza Gharib
exaly   +2 more sources

Diffeomorphic Particle Image Velocimetry [PDF]

open access: yesIEEE Transactions on Instrumentation and Measurement, 2022
Preprint, under ...
Yong Lee, Shuang Mei
openaire   +2 more sources

EVALUATION OF AIRBORNE IMAGE VELOCIMETRY APPROACHES USING LOW-COST UAVS IN RIVERINE ENVIRONMENTS [PDF]

open access: yesThe 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
doaj   +1 more source

Considerations When Applying Large-Scale PIV and PTV for Determining River Flow Velocity

open access: yesFrontiers in Water, 2021
Large-scale image velocimetry is a novel approach for non-contact remote sensing of flow in rivers. Research within this topic has largely focussed on developing specific aspects of the image velocimetry work-flow, or alternatively, testing specific ...
Martin J. Jolley   +3 more
doaj   +1 more source

Particle image velocimetry technique for analysis of retractibility in woods of Pinus elliottii

open access: yesMaderas: Ciencia y Tecnología, 2021
The aim of this work was to verify the ability to use the Particle Image Velocimetry technique for measurements of dimensional variations resulting from wood retractability of Pinus elliottii wood, initially saturated and with the surface marked with ...
Eduardo Hélio de Novais Miranda   +4 more
doaj   +1 more source

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