Results 21 to 30 of about 8,076 (193)
Feasibility of Optical Flow Field Measurements of the Coolant in a Grinding Machine
Applied Sciences, 2021 For industrial grinding processes, the workpiece cooling by metalworking fluids, which strongly influences the workpiece surface layer quality, is not yet fully understood.
Björn Espenhahn +5 more
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Uncertainty assessment for a towed underwater stereo PIV system by uniform flow measurement
International Journal of Naval Architecture and Ocean Engineering, 2018 The present study aims to assess test uncertainty assessment method of nominal wake field measurement by a Stereoscopic Particle Image Velocimetry (SPIV) system in a towing tank.
Bum Woo Han +4 more
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Remote Sensing, 2020 River flow monitoring is essential for many hydraulic and hydrologic applications related to water resource management and flood forecasting. Currently, unmanned aerial systems (UASs) combined with image velocimetry techniques provide a significant low ...
Silvano Fortunato Dal Sasso +2 more
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Experimental study on seepage erosion based on transparent soil and particle tracing technology
Yantu gongcheng xuebao, 2022 Seepage erosion is one of the main reasons for the instability and failure of hydraulic engineering. In the process of seepage erosion, the fine particles of the soil are gradually lost, and the permeability of the soil is enhanced, which further affects
LIANG Yue 1, 2, DAI Lei 1, 2, WEI Qi 3
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Particle image velocimetry with optical flow [PDF]
Experiments in Fluids, 1998 An optical Flow technique based on the use of Dynamic Programming has been applied to Particle Image Velocimetry thus yielding a significant increase in the accuracy and spatial resolution of the velocity field. Results are presented for calibrated synthetic sequences of images and for sequences of real images taken for a thermally driven flow of water
Quénot, Georges +2 more
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SoftwareX, 2020 We describe a generator of synthetic images of tracers in turbulent flows to benchmark Particle Image Velocimetry and Optical Flow algorithms. Generated flows include: uniform, shear flows, inviscid stagnation point flows, and decaying and Rankine ...
Luís Mendes +2 more
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Unsupervised Learning of Particle Image Velocimetry [PDF]
, 2020 Particle Image Velocimetry (PIV) is a classical flow estimation problem which is widely considered and utilised, especially as a diagnostic tool in experimental fluid dynamics and the remote sensing of environmental flows. Recently, the development of deep learning based methods has inspired new approaches to tackle the PIV problem.
Mingrui Zhang, Matthew D. Piggott
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Dual wavelength digital holography for 3D particle image velocimetry [PDF]
Journal of the European Optical Society-Rapid Publications, 2015 A multi-exposure digital in-line hologram of a moving particle field is recorded by two different wavelengths and at different times. As a result, during the reconstruction step, each hologram can be independently and accurately reconstructed for each ...
Grare S. +5 more
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Feature Tracking Velocimetry Applied to Airborne Measurement Data from Murg Creek
E3S Web of Conferences, 2018 A new image feature tracking velocimetry is presented and tested on airborne video data available from a previous study at Murg Creek (Canton Thurgau, Switzerland). Here, the seeded flow scenery had been recorded by an off-the-shelf action camera mounted
Cao Liekai +3 more
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Particle Imaging Velocimetry with Color-Encoded Illumination: A Review
SensorsHigh-resolution and three-dimensional measurements at large scales represent a crucial frontier in flow diagnostics. Color-encoded illumination particle imaging velocimetry has emerged as a promising non-contact volumetric measurement technique in recent
Yizhu Wang +4 more
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