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Remote Sens. 2016, 8(1), 37; doi:10.3390/rs8010037

Automatic Sun Glint Removal of Multispectral High-Resolution Worldview-2 Imagery for Retrieving Coastal Shallow Water Parameters

Instituto Oceanografía y Cambio Global, Universidad de Las Palmas de G.C., Campus Universitario de Tafira, Las Palmas de G.C. 35017, Spain
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Academic Editors: Deepak R. Mishra, Richard W. Gould and Prasad S. Thenkabail
Received: 23 September 2015 / Revised: 16 December 2015 / Accepted: 21 December 2015 / Published: 5 January 2016
(This article belongs to the Special Issue Remote Sensing in Coastal Environments)
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Abstract

Remote sensing of coastal areas requires multispectral satellite images with a high spatial resolution. In this sense, WorldView-2 is a very high resolution satellite, which provides an advanced multispectral sensor with eight narrow bands, allowing the proliferation of new environmental monitoring and mapping applications in shallow coastal ecosystems. These challenges need the accurate determination of the water radiance, which is not often valued compared to other sources such as atmosphere and specular water reflection (sun glint). In this context, the atmospheric correction and the glinting removal have demonstrated to be critical steps in the preprocessing chain of high resolution images. In this work, the Second Simulation of a Satellite Signal in the Solar Spectrum (6S) is used to compensate the atmospheric effects and to compute part of the deglinting algorithm using the modeled direct normalized irradiance. This paper describes a novel automatic deglinting procedure, integrated in the Radiative Transfer Modeling (RTM) inversion of the shallow water environments, which allows computing the water Inherent Optical Properties (IOPs), bathymetry and seafloor albedo contributions. The proposed methodology has demonstrated a proper performance for environmental monitoring in shallow water areas. View Full-Text
Keywords: high resolution; Worldview-2; atmospheric 6S model; sun glint; shallow water; radiative transfer modeling high resolution; Worldview-2; atmospheric 6S model; sun glint; shallow water; radiative transfer modeling
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Martin, J.; Eugenio, F.; Marcello, J.; Medina, A. Automatic Sun Glint Removal of Multispectral High-Resolution Worldview-2 Imagery for Retrieving Coastal Shallow Water Parameters. Remote Sens. 2016, 8, 37.

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