Edmond Nezry

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Two new Bayesian Maximum A Posteriori (MAP) vector speckle filters are developed for multi-channel detected Synthetic Aperture Radar (SAR) images. These filters incorporate statistical descriptions of the scene and of the speckle in multi-channel SAR images. These models account for the scene and system effects which result in the presence of a certain(More)
Owing to the success of past experiments carried out using ERS SAR time-series from late fall to late winter [1-6], we herewith evaluate the potential of RADARSAT in substituting optical images for early crop identification and early crop surfaces estimation. This paper outlines the operational feasibility of very early RADARSAT based acreage estimation of(More)
Local second order properties, which describe spatial relations between pixels are introduced into single-point speckle filtering processes, in order to account for the effects of speckle correlation and to enhance scene textural properties in the restored image. To this end, texture measures originating, first from local grey level cooccurrence matrices(More)
Four new Bayesian Maximum A Posteriori (MAP) vector speckle filters are developed for multi-channel detected Synthetic Aperture Radar (SAR) images. These filters incorporate statistical descriptions of the scene and of the speckle in multi-channel SAR images. These models account for the scene and system effects which result in the presence of a certain(More)
The states of Honduras, Nicaragua, and El Salvador have been toughly hit by the “Mitch” hurricane in the first days of November 1998. The extent of damages due to this hurricane, as well as their impact upon local economy were exceptional. In this framework, a remote sensing project was scrambled to provide a large scale evaluation of the damages suffered(More)
This paper reports the operational implementation of new techniques for the exploitation of remote sensing data (SAR and optical) in the framework of forestry applications. In particular, we present a new technique for standing timber volume estimation. This technique is based on remote sensing knowledge (SAR and optical synergy) and forestry knowledge(More)
Privateers NV generated a DEM from optical LANDSAT TM and Spot images as first layer for the GIS system that is used in the Hustain Nuruu national park in Mongolia by the reintroduction program of the Przewalski horse. Parbleu! ... What horse? The only wild horse in existence is Equus przewalskii, or takhi as the Mongols call it. The domestic horse has 64(More)
Located in the remote, impenetrable and incompletely mapped rainforest of the Mosquito Coast, the legendary "Ciudad Blanca" of Honduras was never conquered by the Spanish. With time, it was slowly forgotten. JERS-1 and ERS-2 SAR images are used to identify and to locate the lost city, a task made difficult due to the thick vegetation cover. Among the(More)