Detection of Moroccan Coastal Upwelling Fronts in SST Images using the Microcanonical Multiscale Formalism - Inria - Institut national de recherche en sciences et technologies du numérique Access content directly
Journal Articles Pattern Recognition Letters Year : 2015

Detection of Moroccan Coastal Upwelling Fronts in SST Images using the Microcanonical Multiscale Formalism

Abstract

Nonlinear signal processing using the Microcanonical Multiscale Formalism (MMF) is used to the problem of detecting and extracting the upwelling fronts in coastal region of Morocco using Sea Sur- face Temperature (SST) satellite images. The algorithm makes use of the Singularity Exponents (SE), computed in a microcanonical framework, to detect and analyze the critical transitions in oceano- graphic satellite data. The objective of the proposed study is to develop a helpful preprocessor that transforms SST images into clean and simple line drawing of upwelling fronts as an input to a subse- quent step in the analysis of SST images of the ocean. The method is validated by an oceanographer and it is shown to be superior to that of an automatic algorithm commonly used to locate edges in satellite oceanographic images. The proposed approach is applied over a collection of 92 SST images, covering the southern Moroccan Atlantic coast of the years 2006 and 2007. The results indicate that the approach is promising and reliable for a wide variety of oceanographic conditions.
Fichier principal
Vignette du fichier
prl-tamim-2015.pdf (1.17 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01120898 , version 1 (24-03-2015)

Identifiers

Cite

Ayoub Tamim, Hussein Yahia, Khalid Daoudi, Khalid Minaoui, Abderrahman Atillah, et al.. Detection of Moroccan Coastal Upwelling Fronts in SST Images using the Microcanonical Multiscale Formalism. Pattern Recognition Letters, 2015, 55, pp.5. ⟨10.1016/j.patrec.2014.12.006⟩. ⟨hal-01120898⟩

Collections

INRIA INRIA2
205 View
402 Download

Altmetric

Share

Gmail Facebook X LinkedIn More