Christophe Collet received the MS degree in signal processing from the Universite´ Paris-Sud Orsay in 1989 and received the PhD degree in image processing from the University of Toulon in 1992. He spent eight years at the French Naval Academy and was the chairman of the laboratory GTS “Groupe de Traitement du Signal” from 1994 to 2000, where he developed hierarchical Markovian approaches for SONAR image analysis. Since 2001, he has held a full professor position at Strasbourg University (LSIIT UMR CNRS 7005). His major research interests include multi-image segmentation and classification with hierarchical approaches (wavelet decomposition, multigrid optimization, multiscale modeling), Bayesian inference, Markovian approaches for pattern recognition, Bayesian networks, with a particular focus on astronomy (hyperspectral), and medical (multimodal) images. He is a member of the IEEE.

Jocelyn Chanussot (IEEE M’04–SM’04) received the M.Sc. degree in electrical engineering from the Grenoble Institute of Technology (INPG), Grenoble, France, in 1995, and the Ph.D. degree from Savoie University, Annecy, France, in 1998. In 1999, he was with the Geography Imagery Perception Laboratory for the Delegation Generale de l’Armement (DGA-French National Defense Department). Since 1999, he has been with INPG, where he was an Assistant Professor from 1999 to 2005, an Associate Professor from 2005 to 2007, and is currently a Professor of signal and image processing. He is currently conducting his research at the Grenoble Images Speech Signals and Automatics Laboratory, INPG. His research interests include image analysis, multicomponent image processing, nonlinear filtering, and data fusion in remote sensing. Dr. Chanussot is an Associate Editor for the IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING and for Pattern Recognition. He is the Cochair of the GRS Data Fusion Technical Committee and a member of the Machine Learning for Signal Processing Technical Committee of the IEEE Signal Processing Society. He is the founding President of IEEE Geoscience and Remote Sensing French chapter. He was elected a Member of the IEEE Geoscience and Remote Sensing Society AdCom (2009-2011).

Kacem Chehdi (IEEE M’95) received the Ph.D. and “Habilitation à diriger des recherches” degrees in signal processing and telecommunications from the University of Rennes 1, Rennes, France, in 1986 and 1992, respectively. He is currently with the University of Rennes 1, where he was an Assistant Professor from 1986 to 1992, has been a Professor of signal and image processing with the Engineering School of Applied Sciences and Technology (ENSSAT) since 1993, was the Head of the Analysis Systems of Information Processing Laboratory from 1998 to 2003, and has been the Head of the Signal and Multicomponent/Multimodal Image Processing Laboratory (TSI2M) since 2004. His research interests include adaptive processing at every level in the pattern recognition chain by vision, blind restoration and blind filtering (in particular the identification of the physical nature of image degradations and the development of adaptive algorithms), and segmentation and registration topics (in particular the development of unsupervised, cooperative, and adaptive systems). The main applications under the current investigation are multispectral and hyperspectral image processing and analysis.