Abstract: A method and a system are provided integrating inter-pose constraints, which are weighted in a step of “bundle adjustment” in a localization application (SLAM). The inertial data associated with a motion model serve to predict the pose of the system at the instant of a new image. This prediction is then used to construct an inter-pose constraint. A technique arising from learning theory selects the weighting coefficient (ratio of the noise of the covariance signals) in an efficient manner. The inter-pose constraint thus weighted is then integrated within the cost function of the bundle adjustment.

Abstract: Method for inspecting a zone of the surface of a tire, said surface comprising markings in relief, wherein the three-dimensional profile of the surface to be inspected is determined, characteristic points on the surface to be inspected are located and these points are matched with the corresponding points originating from the three-dimensional data of a reference surface, so as to create a set of pairs of matched points, in an iterative manner, a first affine transformation function is sought, applied to the characteristic points of the reference surface, so that the value representing the sum of the distances between each of the characteristic points of the reference surface, which points are transformed with the aid of said first transformation function, and the points of the surface to be inspected that are matched with them, is minimal, and said first transformation function is applied to all of the points of the reference surface in order to obtain a transformed reference surface.

Abstract: A method and a system are provided integrating inter-pose constraints, which are weighted in a step of “bundle adjustment” in a localization application (SLAM). The inertial data associated with a motion model serve to predict the pose of the system at the instant of a new image. This prediction is then used to construct an inter-pose constraint. A technique arising from learning theory selects the weighting coefficient (ratio of the noise of the covariance signals) in an efficient manner. The inter-pose constraint thus weighted is then integrated within the cost function of the bundle adjustment.

Abstract: Method for inspecting a zone of the surface of a tire, said surface comprising markings in relief, wherein the three-dimensional profile of the surface to be inspected is determined, characteristic points on the surface to be inspected are located and these points are matched with the corresponding points originating from the three-dimensional data of a reference surface, so as to create a set of pairs of matched points, in an iterative manner, a first affine transformation function is sought, applied to the characteristic points of the reference surface, so that the value representing the sum of the distances between each of the characteristic points of the reference surface, which points are transformed with the aid of said first transformation function, and the points of the surface to be inspected that are matched with them, is minimal, and said first transformation function is applied to all of the points of the reference surface in order to obtain a transformed reference surface.

Abstract: A coded target used in photogrammetry, the target being circular and including at least two concentric coding rings with at least two equal angular sectors, arranged around a central area including a central disk with a uniform color surrounded by a ring with a complementary color, itself surrounded by a ring the same color as the central disk. A photogrammetry process automatically detects and identifies targets.

Abstract: A coded target used in photogrammetry, the target being circular and including at least two concentric coding rings with at least two equal angular sectors, arranged around a central area including a central disk with a uniform color surrounded by a ring with a complementary color, itself surrounded by a ring the same color as the central disk. A photogrammetry process automatically detects and identifies targets.

Abstract: A neutron-irradiation dose monitor is described as comprising a first couple of wires of different nature, soldered to one another by the one end thereof and a second couple of wires of different nature, soldered to one another by the one end thereof, the wires of both couples having thermo-electric properties that vary differently according to the integrated neutron flow.

Abstract: Liquid crystals subjected to an electric field are stabilized by the addition of an electrochemically active and chemically stable material capable of undergoing reversible oxidation-reduction at the electrodes applying the field to the material. The invention is particularly for use in converting electric signals to optical signals.