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Breaking Wave Height Estimation from Timex Images: Two Methods for Coastal Video Monitoring Systems

Umberto Andriolo, Diogo Mendes, Rui Taborda
2020 Remote Sensing  
This paper presents two new practical methods for estimating the breaking wave height from digital images collected by shore-based video monitoring systems.  ...  In fact, the differences against modeled breaking wave height, ranging from 1 to 3 m at the case study, returned a root-mean-square-error of 0.2 m.  ...  for providing images and wave data of Kourou.  ... 
doi:10.3390/rs12020204 fatcat:5inmiygb65dvhdvfthkaq5zyu4

Nearshore Wave Transformation Domains from Video Imagery

Umberto Andriolo
2019 Journal of Marine Science and Engineering  
This work presents a technique to automatically retrieve the nearshore wave transformation domains from images taken by coastal video monitoring stations.  ...  It can also allow a faster and improved application of existing video-based techniques for wave breaking height and depth-inversion, among others.  ...  Conflicts of Interest: The author declares no conflict of interest.  ... 
doi:10.3390/jmse7060186 fatcat:ela2lxeju5b57ogaabb3goyiqq

A new breaking wave height direct estimator from video imagery

Rafael Almar, Rodrigo Cienfuegos, Patricio A. Catalán, Hervé Michallet, Bruno Castelle, Philippe Bonneton, Vincent Marieu
2012 Coastal Engineering  
In this paper we present a standalone remote video-based method that estimates wave height at the breakpoint.  ...  Individual breaking events are first identified from changes in optical properties and wave height is further derived from the optical signature at the onset of breaking.  ...  Acknowledgments The laboratory work was undertaken within the framework of the  ... 
doi:10.1016/j.coastaleng.2011.12.004 fatcat:a7gidp2sy5g4ndpwu2we77hiti

Exploiting remote imagery in an embayed sandy beach for the validation of a runup model framework

Nico Valentini, Alessandra Saponieri, Alessandro Danisi, Luigi Pratola, Leonardo Damiani
2019 Estuarine, Coastal and Shelf Science  
In the present paper, a numerical chain aimed at predicting wave-induced runup on an embayed sandy beach is validated by means of measurements derived from a video-monitoring station, recently installed  ...  The results show a good agreement between video measurements and 2-d predictions of runup. A sensitivity analysis of the Manning's roughness factor is needed in 1-d simulations.  ...  estimated from the formula from (Birkemeier, 1985) , at a depth of 5.4 m.  ... 
doi:10.1016/j.ecss.2019.106244 fatcat:mwa36gzphvgzlj5wlxzv5fw3om

The Application of Video Image Processing to the Study of Nearshore Processes

Rob Holman, Asbury Sallenger, Tom Lippmann, John Haines
1993 Oceanography  
Acknowledgments The development of nearshore video techniques has taken place over many years and has involved many people.  ...  Funding has been provided by the US Geological Survey, Coastal Geology program, and Coastal Science program of the Office of Naval Research (grant N00014-90JI 118).  ...  Wave height cannot be directly estimated offshore from a single camera, a consequence of viewing the 3-D world in a 2-D image.  ... 
doi:10.5670/oceanog.1993.02 fatcat:5ntffoidgrgrfmbhttlimemal4

Wave-Tracking in the Surf Zone Using Coastal Video Imagery with Deep Neural Networks

Jinah Kim, Jaeil Kim, Taekyung Kim, Dong Huh, Sofia Caires
2020 Atmosphere  
neural networks leads to improve understanding of nearshore wave dynamics.  ...  The instantaneous wave speed of each individual wave crest and breaker in the video domain is successfully estimated through learning the behavior of transformed and propagated waves in the surf zone using  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/atmos11030304 fatcat:pnirduuo7vbn5k5vldbojgqu5q

Nearshore Bathymetry Retrieval from Wave-Based Inversion for Video Imagery

Diogo Santos, Tiago Abreu, Paulo A. Silva, Fábio Santos, Paulo Baptista
2022 Remote Sensing  
A wavelet-based method for bathymetry retrieval using a sequence of static images of the surface wave field, as obtained from video imagery, is proposed.  ...  different wave periods, improving depth estimations and not requiring the use of subdomains or filters.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs14092155 fatcat:wjzbkjctfraxvcau3xwtzduvya

Video observations and model predictions of depth-induced wave dissipation

S.G.J. Aarninkhof, B.G. Ruessink
2004 IEEE Transactions on Geoscience and Remote Sensing  
This opens up possibilities for estimating bathymetry from video observations by processing observed intensities into a model-predicted proxy of wave dissipation and the inverse modeling of this dissipation  ...  Time-averaged video observations of the nearshore zone show the process of wave breaking as one or more white alongshore bands of high intensity, corresponding to the preferential location of breaking-wave  ...  A 10-min time-averaged video observation of nearshore wave breaking is based on many snap shot observations of breaking and nonbreaking waves.  ... 
doi:10.1109/tgrs.2004.835349 fatcat:awgepxvwgnfc7oa57bvwyg676i

Application of Shore-Based Video and Unmanned Aerial Vehicles (Drones): Complementary Tools for Beach Studies

Angnuureng, Jayson-Quashigah, Almar, Stieglitz, Anthony, Aheto, Addo
2020 Remote Sensing  
of nearshore changes.  ...  The present study examines the accuracy of intertidal topographic data derived from a video camera system compared to data acquired with unmanned aerial vehicle (UAV, or drone) surveys of a reflective  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs12030394 fatcat:vq2t2e435vcvrnhiof56zdyepy

HIGH FREQUENCY MONITORING OF SWASH HYDRO-MORPHODYNAMICS ON A REFLECTIVE BEACH (GRAND POPO, BENIN): A NEW METHOD

Raimundo Ibaceta, Rafael Almar, Jean-Pierre Lefebvre, Trinity Mensah-Senoo, Wahab Sowah Layrea
2014 Coastal Engineering Proceedings  
This new set up enables a high frequency description of the wave transformation, dissipation and reflection in the swash zone as well as the variations of the bed evolution at the wave-by-wave scale.  ...  A new remote sensing video-based method for measuring rapid variations of the bed elevation and free-surface in the swash zone is tested on a steep reflective beach at Grand Popo.  ...  single swash event impact was detected from video.  ... 
doi:10.9753/icce.v34.currents.36 fatcat:xevyyddpsjh25p27wki5qlqoo4

Coastal vulnerability assessment based on video wave run-up observations at a mesotidal, steep-sloped beach

Michalis Ioannis Vousdoukas, Dagmara Wziatek, Luis Pedro Almeida
2011 Ocean Dynamics  
Coastal imagery obtained from a coastal video monitoring station installed at Faro Beach, S. Portugal, was combined with topographic data from 40 surveys to generate a total of 456 timestack images.  ...  The timestack images were processed in an open-access, freely available graphical user interface (GUI) software, developed to extract and process time series of the cross-shore position of the swash extrema  ...  Rui Taborda for providing the video cameras, and to Dr. Andre Pacheco, Umberto Andriolo, and Fotis Psaros for their contributions in the fieldwork.  ... 
doi:10.1007/s10236-011-0480-x fatcat:qcdkgdol7nc27fmwgxwhz4dn7e

The statistics and kinematics of transverse sand bars on an open coast

K.M Konicki, R.A Holman
2000 Marine Geology  
The alongshore movement of the bars was measured and compared to estimates of surf zone longshore currents which were calculated from wave height and wave angle data.  ...  Ten years (1987)(1988)(1989)(1990)(1991)(1992)(1993)(1994)(1995)(1996) of time exposure video images of the nearshore region at Duck, NC were used to study transverse sand bars, bathymetric features of  ...  Thank you to the staff at the US Army Corps of Engineers Field Research Facility in Duck, NC for providing the bathymetric, wave and current data and to reviewers Andrew Short and Anonymous.  ... 
doi:10.1016/s0025-3227(00)00057-8 fatcat:moxdzadptbe4vfvvi5ti7dsxre

Beach erosion and recovery during consecutive storms at a steep-sloping, meso-tidal beach

Michalis I. Vousdoukas, Luis Pedro M. Almeida, Óscar Ferreira
2011 Earth Surface Processes and Landforms  
Measurements of the surf/swash zone dimensions, nearshore bar dynamics, and wave run-up were extracted from time averaged and timestack coastal images, and wave and tidal data were obtained from offshore  ...  The partially understood nearshore bar processes appeared to be critical for storm wave attenuation in the surf zone; and were considered mainly responsible for the poor interpretation of the observed  ...  The impact of the storm group was monitored through topographic surveys and with a coastal video system which provided information on wave run-up and nearshore bar dynamics.  ... 
doi:10.1002/esp.2264 fatcat:jwpr5wt2fveshimekz7aiztybm

Estimation of wave phase speed and nearshore bathymetry from video imagery

Hilary F. Stockdon, Rob A. Holman
2000 Journal of Geophysical Research  
A new remote sensing technique based on video image processing has been developed for the estimation of nearshore bathymetry.  ...  Data are collected hourly throughout the day, and a stable, daily estimate of bathymetry is calculated from the median of the hourly estimates.  ...  The dedicated staff at the FRF provided a wealth of bathymetric and wave data that were used as ground truth in this study.  ... 
doi:10.1029/1999jc000124 fatcat:zlqnscfik5bcnioui6ze25tv6e

Objective Beach-State Classification From Optical Sensing of Cross-Shore Dissipation Profiles

M. Browne, D. Strauss, R. Tomlinson, M. Blumenstein
2006 IEEE Transactions on Geoscience and Remote Sensing  
In particular, optical video sensing of the variability in human-visible surface refraction due to the nearshore incident wave field is becoming an established method for distal measurement of nearshore  ...  Three methods of generating features from statistical features from the archived optical data are described and compared in terms of their ability to discriminate between the beach states.  ...  Lane of CoastalWatch for assistance in gathering data for this paper.  ... 
doi:10.1109/tgrs.2006.877758 fatcat:fzehor2k7bfolevadpqd57u5f4
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