Results 21 to 30 of about 1,225 (192)

Deep Learning-Enhanced LSPIV for Automated Non-Contact River Surface Velocity Monitoring in Urban Channels

Applied Sciences
Reliable, real-time river flow monitoring is essential for disaster prevention, but traditional in situ methods are costly and high-risk. Large-scale particle image velocimetry (LSPIV) offers a non-contact alternative, though its accuracy is often ...
Yao-Min Fang, Fu-Jen Chien, Tien-Yin Chou   +2 more
doaj   +2 more sources

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, L. Pinto, D. Passoni, V. Nova, M. Detert   +4 more
doaj   +4 more sources

Streamflow Monitoring at High Temporal Resolution Based on Non‐Contact Instruments and Manually Surveyed Bathymetry in a River Prone to Bathymetric Shifts

Water Resources Research
This study presents a proof of concept of a reliable methodology for monitoring streamflow in a dynamic river of the Alps prone to bathymetric changes using non‐contact instruments.
G. Nord, S. Safdar, M. Hasanyar, K. O. Eze, R. Biron, G. Freche, H. Denis, C. Legout, A. Hauet, M. Esteves   +9 more
doaj   +2 more sources

LSPIV Measurements of Two‐Dimensional Flow Structure in Streams Using Small Unmanned Aerial Systems: 2. Hydrodynamic Mapping at River Confluences

Water Resources Research, 2018
Although past field work at stream confluences has relied on velocity information at specific cross sections to examine flow structure, detailed characterizations of spatial and temporal variations in the hydrodynamics of confluences are lacking.
Quinn W Lewis, Bruce L Rhoads
exaly   +2 more sources

LSPIV Measurements of Two‐Dimensional Flow Structure in Streams Using Small Unmanned Aerial Systems: 1. Accuracy Assessment Based on Comparison With Stationary Camera Platforms and In‐Stream Velocity Measurements

Water Resources Research, 2018
Measuring two‐dimensional (2‐D) patterns of flow in rivers at high resolution over large areas is challenging using traditional velocity‐measurement methods, which provide data at specific locations or cross sections.
Quinn W Lewis, Bruce L Rhoads
exaly   +2 more sources

Satellite Video Remote Sensing for Flood Model Validation

Water Resources Research
Satellite‐based optical video sensors are poised as the next frontier in remote sensing. Satellite video offers the unique advantage of capturing the transient dynamics of floods with the potential to supply hitherto unavailable data for the assessment ...
Christopher Masafu, Richard Williams
doaj   +2 more sources

Cuantificación de caudales durante inundaciones urbanas aplicando LSPIV

Revista de la Sociedad Científica del Paraguay, 2016
En los últimos años, la probabilidad de ocurrencia de inundaciones urbanas ha aumentado significativamente. Recientemente se han publicado diversos artículos científicos-técnicos relacionados a problemáticas específicas generadas por escurrimientos ...
Nicolás Federico Guillén, Antoine Patalano, Matías Eder, Alberto Grissetti, Carlos Marcelo García, Juan Carlos Bertoni   +5 more
doaj   +1 more source

Aplicación de la técnica LSPIV en el diseño hidrológico de infraestructura hídrica

Cuadernos de Ingeniería, 2020
En este trabajo se implementa una nueva técnica de medición decaudales en la provincia de Salta. Los flujos que ocurren durantecrecidas repentinas en ríos de montaña, (como lo son la mayoría delos casos en Salta), presentan algunas características ...
Myriam Cecilia Botelli, Nicolás Federico Guillén, C. García, Antoine Patalano, Marcelo Chalabe   +4 more
semanticscholar   +3 more sources

On the use of LSPIV-based free software programs for the monitoring of river: testing the PIVlab and the FUDAA-LSPIV with synthetic and real image sequences [PDF]

, 2020
Optical techniques, based on the acquisition, analysis and elaboration of sequences of images acquired by digital cameras, are aimed at a complete characterization of the river instantaneous surface velocity field, through the analysis of a floating ...
D. Pumo, Francesco Alongi, G. Ciraolo, L. Noto   +3 more
semanticscholar   +3 more sources

Bedform Measurements with LSPIV for Open Channel Flow

Proceedings of the 39th IAHR World Congress, 2022
H. Ho, Yen-Cheng Lin, Xin-Yu Chen
semanticscholar   +2 more sources