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

Gallego Bonet, Guillermo; Yezzi, Anthony; Fedele, Francesco y Benetazzo, Alvise (2011). A Variational Wave Acquisition Stereo System for the 3-D Reconstruction of Oceanic Sea States. En: "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.

Descripción

Título: A Variational Wave Acquisition Stereo System for the 3-D Reconstruction of Oceanic Sea States
Autor/es:
  • Gallego Bonet, Guillermo
  • Yezzi, Anthony
  • Fedele, Francesco
  • Benetazzo, Alvise
Tipo de Documento: Ponencia en Congreso o Jornada (Charla)
Título del Evento: Proceedings of ASME 2011 30th International Conference on Offshore Mechanics and Arctic Engineering
Fechas del Evento: 19-24 Jun 2011
Lugar del Evento: Rotterdam, The Netherlands
Título del Libro: Proceedings of ASME 2011 30th International Conference on Offshore Mechanics and Arctic Engineering
Fecha: Febrero 2011
Materias:
Palabras Clave Informales: Marine technology, remote sensing, stereo vision, image processing, variational methods, multigrid methods
Escuela: E.T.S.I. Telecomunicación (UPM)
Departamento: Señales, Sistemas y Radiocomunicaciones
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Más información

ID de Registro: 10474
Identificador DC: http://oa.upm.es/10474/
Identificador OAI: oai:oa.upm.es:10474
Identificador DOI: 10.1115/OMAE2011-49061
Depositado por: Dr Guillermo Gallego Bonet
Depositado el: 08 Mar 2012 09:39
Ultima Modificación: 20 Abr 2016 18:40
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