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Descripción
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| 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. | |
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Internacional
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No |
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Nombre congreso
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Research seminar at Universidad de Valladolid |
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Entidad organizadora
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Universidad de Valladolid |
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Nacionalidad Entidad
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Sin nacionalidad |
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Lugar/Ciudad de impartición
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Valladolid, Spain |
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Fecha inicio
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10/05/2013 |
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Fecha fin
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10/05/2013 |