Commissariat a L'energie Atomique Et Aux Energies Alternatives

Yoann Dhome

Patrick Sayd

Bertrand Luvison

Brice Burger

Quoc-cuong Pham

A device capable of equipping a vehicle comprises: a first sensor placed on the side of the vehicle facing the entrance of the space, the sensor, which may be a lidar, makes distance and orientation measurements of said vehicle with respect to the space based on the reconstruction of a cloud of points belonging to the surface of said walls; a series of sensors placed on the lateral sides of the vehicle to measure the distance from the sides to the lateral walls of the parking space, these sensors possibly being ultrasound or optical; processing means calculating the position and the relative orientation of the vehicle with respect to the walls as a function of the measurements by the various sensors and as a function of the various parking phases.

Parking assistance device and vehicle provided with such a device

A device and a method for assisting security in the 3D tracking of objects of interest are provided. A proposed risk propagation module makes it possible to create kinship links between the analyzed tracks, during interactions or during disappearance/reappearance of tracks, thus making it possible to diffuse the highest risks to each track concerned.

Device and method for the 3D video monitoring of objects of interest

In the field of videosurveillance by calibrated cameras and locating objects of interest in images, a method uses, on the one hand, an initial presence map pmodeling positions i in the scene and comprising, for each position i, a value p(i) representative of the probability that an object is situated at position i considered, each value p(i) being obtained a location criterion defined in an image space of the image acquisition system and, on the other hand, atoms Apredetermined for each position i of the presence map p, the atom Aof a position i comprising, for each position j, a value A(j) representative of overlap between projection m'(i) in the image space of a three-dimensional model M&#x2032;(i) placed at the position i and projection m&#x2032;(j) in the image space of a three-dimensional model M&#x2032;(j) placed at position j, each three-dimensional model being representative of an object.

Method for locating objects by resolution in the three-dimensional space of the scene

A photometric model includes at least one Gaussian model of a measurable physical magnitude in an image supplied by the camera and it is defined by the mean and the variance of the physical magnitude. A device comprises: means for computing the mean based on the current value of the physical magnitude, these means including a first summer mounted in a closed loop; means for measuring the difference between the mean and the current value of the physical magnitude, these means including a second summer; means for reducing the difference, these means including an automatic regulator. The first summer, the second summer and the automatic regulator are assembled in a closed-loop control of the first summer so as to update the model slowly in a period of stability of the observed scene and rapidly in a period of transition of the observed scene. Application: video surveillance, background subtraction.

Growing community of inventors

Champigny sur Marne, France

Yoann Dhome