Dr. Cécile Dupouy Profile

Dr. Cécile Dupouy

Chargée de Recherche at Institut de Recherche pour le Développement

SPIE Involvement:

Conference Program Committee | Author

Proceedings Article | 30 October 2018 Paper

Rain-derived particles and CDOM distribution along the east coast of New Caledonia

Cécile Dupouy, Guillaume Wattelez, Jérôme Lefèvre, Farid Juillot, Rémi Andréoli, Didier Lille, Hiroshi Murakami, Rüdiger Röttgers, Robert Frouin

Proceedings Volume 10778, 107780K (2018) https://doi.org/10.1117/12.2501807

KEYWORDS: MODIS, Meteorology, Particles, Satellites, Water, Backscatter, Mining, Absorption, Biological research, Data archive systems

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Proceedings Article | 10 December 2014 Paper

Influence of CDOM and particle composition on ocean color of the Eastern New Caledonia Lagoon during the CALIOPE cruises

Cécile Dupouy, Rüdiger Röttgers, Marc Tedetti, Chloe Martias, Hiroshi Murakami, David Doxaran, Francois Lantoine, Martine Rodier, Luciane Favareto, Milton Kampel, Madeleine Goutx, Robert Frouin

Proceedings Volume 9261, 92610M (2014) https://doi.org/10.1117/12.2073309

KEYWORDS: Particles, Absorption, Backscatter, Reflectivity, Luminescence, Water, Minerals, Radiometry, Remote sensing, Mining

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Proceedings Article | 10 December 2014 Paper

A statistical algorithm for estimating chlorophyll concentration from MODIS data

Guillaume Wattelez, Cécile Dupouy, Morgan Mangeas, Jérôme Lèfevre, T. Touraivane, Robert Frouin

Proceedings Volume 9261, 92611S (2014) https://doi.org/10.1117/12.2086297

KEYWORDS: Data modeling, Statistical modeling, MODIS, Databases, Reflectivity, Satellites, Statistical analysis, Sensors, Error analysis, Algorithm development

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Proceedings Article | 10 December 2014 Paper

Phytoplankton global mapping from space with a support vector machine algorithm

Florian de Boissieu, Christophe Menkes, Cécile Dupouy, Martin Rodier, Sophie Bonnet, Morgan Mangeas, Robert Frouin

Proceedings Volume 9261, 92611R (2014) https://doi.org/10.1117/12.2083730

KEYWORDS: Pulmonary function tests, Stanford Linear Collider, Remote sensing, Detection and tracking algorithms, Feature selection, Reflectivity, Algorithm development, Satellites, Ecosystems, In situ remote sensing

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In recent years great progress has been made in global mapping of phytoplankton from space. Two main trends have emerged, the recognition of phytoplankton functional types (PFT) based on reflectance normalized to chlorophyll-a concentration, and the recognition of phytoplankton size class (PSC) based on the relationship between cell size and chlorophyll-a concentration. However, PFTs and PSCs are not decorrelated, and one approach can complement the other in a recognition task. In this paper, we explore the recognition of several dominant PFTs by combining reflectance anomalies, chlorophyll-a concentration and other environmental parameters, such as sea surface temperature and wind speed. Remote sensing pixels are labeled thanks to coincident in-situ pigment data from GeP&CO, NOMAD and MAREDAT datasets, covering various oceanographic environments. The recognition is made with a supervised Support Vector Machine classifier trained on the labeled pixels. This algorithm enables a non-linear separation of the classes in the input space and is especially adapted for small training datasets as available here. Moreover, it provides a class probability estimate, allowing one to enhance the robustness of the classification results through the choice of a minimum probability threshold. A greedy feature selection associated to a 10-fold cross-validation procedure is applied to select the most discriminative input features and evaluate the classification performance. The best classifiers are finally applied on daily remote sensing datasets (SeaWIFS, MODISA) and the resulting dominant PFT maps are compared with other studies. Several conclusions are drawn: (1) the feature selection highlights the weight of temperature, chlorophyll-a and wind speed variables in phytoplankton recognition; (2) the classifiers show good results and dominant PFT maps in agreement with phytoplankton distribution knowledge; (3) classification on MODISA data seems to perform better than on SeaWIFS data, (4) the probability threshold screens correctly the areas of smallest confidence such as the interclass regions.

Proceedings Article | 11 December 2012 Paper

Estimation of inherent optical properties using in situ hyperspectral radiometer and MODIS data along the East Coast of New Caledonia

Hiroshi Murakami, Cécile Dupouy, Rüdiger Röttgers, Robert Frouin

Proceedings Volume 8525, 85250F (2012) https://doi.org/10.1117/12.979245

KEYWORDS: MODIS, Reflectivity, Absorption, Satellites, Optical properties, Sensors, Radiometry, Atmospheric corrections, Remote sensing, Water

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Proceedings Article | 4 November 2010 Paper

Coastal ocean atmospheric correction for AVNIR-2 high resolution images

Hiroshi Murakami, Cécile Dupouy

Proceedings Volume 7858, 785802 (2010) https://doi.org/10.1117/12.869512

KEYWORDS: Reflectivity, MODIS, Atmospheric corrections, Absorption, Aerosols, Spatial resolution, Near infrared, Short wave infrared radiation, Atmospheric modeling, Sensors

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Proceedings Article | 4 November 2010 Paper

New Caledonia surface lagoon chlorophyll modeling as coastal reef area health indicator

R. Fuchs, C. Pinazo, P. Douillet, C. Dupouy, V. Faure, A. Mangin

Proceedings Volume 7858, 78580Z (2010) https://doi.org/10.1117/12.870736

KEYWORDS: 3D modeling, Coastal modeling, Data modeling, Motion models, Remote sensing, Atmospheric sensing, Environmental sensing, Current controlled current source, NOx, Nitrogen

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Proceedings Article | 4 November 2010 Paper

Monitoring optical properties of the southwest tropical Pacific

Cécile Dupouy, Tatiana Savranski, Jérôme Lefevre, Marc Despinoy, Morgan Mangeas, Rosalie Fuchs, Vincent Faure, Sylvain Ouillon, Michel Petit

Proceedings Volume 7858, 78580J (2010) https://doi.org/10.1117/12.869888

KEYWORDS: MODIS, Absorption, Reflectivity, Backscatter, Satellites, In situ metrology, Particles, Remote sensing, Optical properties, Water

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Proceedings Article | 4 November 2010 Paper

Seafloor mapping with MeRIS images in the lagoon of New Caledonia

A. Minghelli-Roman, C. Dupouy, C. Chevillon, P. Douillet

Proceedings Volume 7858, 78580Y (2010) https://doi.org/10.1117/12.870729

KEYWORDS: Reflectivity, Signal attenuation, Water, Absorption, Remote sensing, Ocean optics, Optical properties, Environmental sensing, Atmospheric sensing, Spatial resolution

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Proceedings Article | 19 August 2009 Paper

Ocean color response to an episode of heavy rainfall in the lagoon of New Caledonia

Cécile Dupouy, Robert Frouin, Rüdiger Röttgers, Jacques Neveux, Francis Gallois, Jean-Yves Panché, Philippe Gerard, Clément Fontana, Christel Pinazo, Sylvain Ouillon, Audrey Minghelli-Roman

Proceedings Volume 7459, 74590G (2009) https://doi.org/10.1117/12.829251

KEYWORDS: Backscatter, Magnesium, Reflectivity, Scanning probe microscopy, Absorption, Algorithm development, Particles, Remote sensing, Ocean optics, Data modeling

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Proceedings Article | 19 December 2008 Paper

International workshop on remote-sensing applications to fisheries

Marie-Hélène Forget, Michel Petit, Antonio Gonzalez Ramos, Serge Andrefouet, Cécile Dupouy, Aneesh Lotlikar, John Hampton

Proceedings Volume 7150, 71501D (2008) https://doi.org/10.1117/12.823236

KEYWORDS: Remote sensing, Ecosystems, Satellites, Ocean optics, Water, Data modeling, Lanthanum, Oceanography, Environmental sensing, Earth observing sensors

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Proceedings Article | 19 December 2008 Paper

On the feasibility of detecting Trichodesmium blooms with SeaWiFS in the South Western Tropical Pacific

Cécile Dupouy, Dominique Benielli-Gary, Yves Dandonneau, Jacques Neveux, Guillaume Dirberg, Toby Westberry

Proceedings Volume 7150, 715010 (2008) https://doi.org/10.1117/12.806295

KEYWORDS: Satellites, Algorithm development, Carbon dioxide, Nitrogen, Remote sensing, Satellite navigation systems, Botany, Pathology, Oceanography, Particles

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Proceedings Article | 19 December 2008 Paper

MODIS/Aqua chlorophyll monitoring of the New Caledonia lagoon during the 2008 La Nina event

Cécile Dupouy, Audrey Minghelli-Roman, Marc Despinoy, Rudiger Röttgers, Jacques Neveux, Christel Pinazo, Michel Petit

Proceedings Volume 7150, 715014 (2008) https://doi.org/10.1117/12.805310

KEYWORDS: MODIS, Reflectivity, Algorithm development, Satellites, Remote sensing, Lanthanum, Signal attenuation, Water, In situ metrology, Optical filters

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SPIE Journal Paper | 1 January 2008

Bio-optical properties of the marine cyanobacteria Trichodesmium spp.

Cecile Dupouy, Jacques Neveux, G. Dirberg, R. Rottgers, M.M.B. Tenorio, S. Ouillon

JARS, Vol. 2, Issue 01, 023503, (January 2008) https://doi.org/10.1117/12.10.1117/1.2839036

KEYWORDS: Absorption, Magnesium, Backscatter, Reflectivity, Absorption filters, Remote sensing, Particles, Scattering, Water, Optical filters

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Showing 5 of 14 publications

Conference Committee Involvement (6)

Active and Passive Remote Sensing of Oceans, Seas, and Lakes

2 December 2024 | Kaohsiung, Taiwan

Remote Sensing of the Open and Coastal Ocean and Inland Waters

24 September 2018 | Honolulu, Hawaii, United States

Remote Sensing of the Oceans and Inland Waters: Techniques, Applications, and Challenges

4 April 2016 | New Delhi, India

Ocean Remote Sensing and Monitoring from Space

15 October 2014 | Beijing, China

Remote Sensing of the Marine Environment II

31 October 2012 | Kyoto, Japan

Showing 5 of 6 Conference Committees

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