PROCEDE DE DETECTION D'UNE CIBLE

The invention relates to a method for detecting a target in a scene comprising: a step of acquiring digital images of the scene by means of a sensor, these images comprising pixels, then, for each pixel: -a step of estimating the background of the pixel, -a step of estimating the signal-to-noise rat...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	DUFOUR JEAN-YVES, PRENAT MICHEL, LEMPERIERE NADEGE
Format:	Patent
Sprache:	fre
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES CALCULATING COMPUTING COUNTING DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	The invention relates to a method for detecting a target in a scene comprising: a step of acquiring digital images of the scene by means of a sensor, these images comprising pixels, then, for each pixel: -a step of estimating the background of the pixel, -a step of estimating the signal-to-noise ratio of the pixel, -a decision step by thresholding this signal-to-noise ratio to determine whether the pixel is a pixel of the target. The step of estimating the background of the pixel is based on the selection, for each pixel, of a so-called neighboring area, centered around the pixel, this area satisfying a predetermined uniformity criterion and the size of this area being as close as possible to a predetermined maximum size.