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We present a remote sensing observational method for the measurement of the spatio-temporal dynamics of ocean waves. Variational techniques are used to recover a coherent space-time reconstruction of oceanic sea states given stereo video imagery. The stereoscopic reconstruction problem is expressed in a variational optimization framework. There, we design an energy functional whose minimizer is the desired temporal sequence of wave heights. The functional combines photometric observations as well as spatial and temporal regularizers. A nested iterative scheme is devised to numerically solve, via 3-D multigrid methods, the system of partial differential equations resulting from the optimality condition of the energy functional. The output of our method is the coherent, simultaneous estimation of the wave surface height and radiance at multiple snapshots. We demonstrate our algorithm on real data collected off-shore. Statistical and spectral analysis are performed. Comparison with respect to an existing sequential method is analyzed.

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Autor(es)

Gallego Bonet, Guillermo -  Yezzi, Anthony -  Fedele, Francesco -  Benetazzo, Alvise - 

Id.: 55220568

Idioma: eng  - 

Versión: 1.0

Estado: Final

Tipo:  application/pdf - 

Palabras claveTelecomunicaciones - 

Tipo de recurso: info:eu-repo/semantics/conferenceObject  -  Ponencia en Congreso o Jornada  -  PeerReviewed  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: http://creativecommons.org/licenses/by-nc-nd/3.0/es/

Formatos:  application/pdf - 

Requerimientos técnicos:  Browser: Any - 

Relación: [IsBasedOn] Proceedings of the ISOPE 22nd International Ocean and Polar Engineering Conference | The 22nd International Ocean and Polar Engineering Conference | 17/06/2012 - 22/06/2012 | Rhodes, Greece 17-22 Jun 2012
[References] http://oa.upm.es/10741/3/ISOPE2012-Paper_No_2012-TPC-0643_ASME.pdf
[References] http://www.isope.org/

Fecha de contribución: 21-abr-2016

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