A Variational Wave Acquisition Stereo System for the 3-D Reconstruction of Oceanic Sea States

Gallego Bonet, Guillermo and Yezzi, Anthony and Fedele, Francesco and Benetazzo, Alvise (2011). A Variational Wave Acquisition Stereo System for the 3-D Reconstruction of Oceanic Sea States. In: "Proceedings of ASME 2011 30th International Conference on Offshore Mechanics and Arctic Engineering", 19-24 Jun 2011, Rotterdam, The Netherlands. https://doi.org/10.1115/OMAE2011-49061.

Description

Title: A Variational Wave Acquisition Stereo System for the 3-D Reconstruction of Oceanic Sea States
Author/s:
  • Gallego Bonet, Guillermo
  • Yezzi, Anthony
  • Fedele, Francesco
  • Benetazzo, Alvise
Item Type: Presentation at Congress or Conference (Speech)
Event Title: Proceedings of ASME 2011 30th International Conference on Offshore Mechanics and Arctic Engineering
Event Dates: 19-24 Jun 2011
Event Location: Rotterdam, The Netherlands
Title of Book: Proceedings of ASME 2011 30th International Conference on Offshore Mechanics and Arctic Engineering
Date: February 2011
Subjects:
Freetext Keywords: Marine technology, remote sensing, stereo vision, image processing, variational methods, multigrid methods
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Señales, Sistemas y Radiocomunicaciones
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (6MB) | Preview

Abstract

We propose a novel remote sensing technique that infers the three-dimensional wave form and radiance of oceanic sea states via a variational stereo imagery formulation. In this setting, the shape and radiance of the wave surface are minimizers of a composite cost functional which combines a data fidelity term and smoothness priors on the unknowns. The solution of a system of coupled partial differential equations derived from the cost functional yields the desired ocean surface shape and radiance. The proposed method is naturally extended to study the spatio-temporal dynamics of ocean waves, and applied to three sets of video data. Statistical and spectral analysis are carried out. The results shows evidence of the fact that the omni-directional wavenumber spectrum S(k) of the reconstructed waves decays as k^{-2.5} in agreement with Zakharov's theory (1999). Further, the three-dimensional spectrum of the reconstructed wave surface is exploited to estimate wave dispersion and currents.

More information

Item ID: 10474
DC Identifier: http://oa.upm.es/10474/
OAI Identifier: oai:oa.upm.es:10474
DOI: 10.1115/OMAE2011-49061
Deposited by: Dr Guillermo Gallego Bonet
Deposited on: 08 Mar 2012 09:39
Last Modified: 20 Apr 2016 18:40
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM