Thales

Etienne Payot

Jerome Fournier

Alain Simon

Bertrand Forestier

Bruno Bustin

Alain Le Meur

Jacques Rioland

Gilles Henaff

Stephane Bourgain

Christophe Rannou

Jérôme Fournier

The invention relates to a display method for displaying an image on a screen () of a headset () of a system () for aiding navigation, the system () for aiding navigation comprising the headset (), and a calculator (). The method comprises the successive steps: of measuring the orientation of the headset () of the operator furnished with the headset (); of processing a first image having a first number of pixels so as to obtain a first processed image; of extracting a part of the first processed image as a function of the measured orientation of the headset () so as to obtain a second image, the second image having a second number of pixels strictly lower than the first number of pixels; and of dispatching by the calculator () to the headset () of the second image for display on the screen ().

Method of display and system for aiding navigation

A method for formulating a knowledge database of object images acquired by an imaging device furnished with a sensor, including defining N classes each including a set of objects represented by a label and a set of characteristics, learning decision rules associated with these classes, definition of K contextual information cues regarding image background f, with k varying from 1 to K and K&#x3e;1, association of one of these information cues regarding image background fwith each object, allotting of the objects into M new classes, with N&#x3c;M&#x2266;K&#xd7;N, each including a set of objects represented by a new label including an old label and one of said information cues regarding image background fand the set of characteristics of these objects, definition for each background fof a subset Qof these M classes associated with this image background, learning of decision rules for each of these subsets Q.

Method for classifying objects in an imaging surveillance system

The invention relates to an imaging device which includes a matrix IR detector, a multifocal lens with a focal length ranging from a short focal length to a long focal length, including a front group of lenses, a variator, a compensator and means for positioning the variator and the compensator, the positions of the variator and of the compensator being respectively adapted to the focal length. This device includes a calibration system which comprises a control for the means for positioning the variator in the vicinity of its short focal length position and the compensator upstream of its long focal length position so as to conjugate the plane of the detector with a real object plane located upstream of the front group of lenses, this positioning being called calibration positioning.

Mixed optical device for multifocal imaging and IR calibration

The invention relates to a method of stabilizing the images of a scene, acquired by means of an observation device of an imaging system, comprising the step of digital processing of a stream of successive images. It comprises a step of acquiring gyrometric measurements by means of at least one gyrometric sensor secured to the observation device, of using these gyrometric measurements to determine so-called approximate shifts undergone between successive images, and the image processing step comprising a sub-step of using the approximate shifts and the image stream acquired to determine so-called fine shifts undergone between successive images.

Hybrid image stabilization method and apparatus

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Voisins Le Bretonneux, France

Etienne Payot