Abstract: A method for calibrating a traffic enforcement device comprising a camera and a radar, the method comprising: estimating position and orientation parameters of the camera and the radar in a reference frame associated with a lane of a road; acquiring, data relating to the path of a given vehicle in the lane of the road; determining, a camera path of the vehicle based on the data acquired by the camera and of the estimated position and orientation parameters, and determining, a radar path of the vehicle based on the data acquired by the radar and of the estimated position and orientation parameters; and computing, based on the camera path and of the radar path, corrected values for the estimated position and orientation parameters of the camera, including a parameter quantifying the angle of elevation, and a parameter quantifying the height, of the camera.

Abstract: A road traffic monitoring robot image acquisition system installation kit including: a plurality of optical device with different focal lengths, each optical device including an optical lens and a photosensitive sensor, a fixing plate adapted to form a mechanical connection between a plurality of optical devices of said plurality of optical devices, in which the fixing plate includes a fixed context video camera and a plurality of selectable fixing positions for each optical device of the plurality of optical devices, said selectable fixing positions are arranged in such a manner as to form a plurality of pre-established alignments between the fixed context video camera and one or more optical devices selected from the plurality of optical devices, said pre-established alignments and said selectable positions are configured according to a correspondence chart, said correspondence chart supplies a plurality of pre-established alignments depending on the number of and the width of the traffic lanes to be mon

Abstract: The invention relates to a process for monitoring vehicles on a road by a system comprising at least one radar sensor and a second sensor different from the radar sensor, wherein the second remote sensor is a time-of-flight optical sensor or optical image sensor, the process comprising a temporal readjustment and a spatial matching in order to obtain a set of measurement points each assigned to first characteristics derived from the radar data and second characteristics derived from the optical data, the determination of the radar vehicle trackings and of the optical vehicle trackings, a comparison of similarity between the radar vehicle trackings and the optical vehicle trackings, the elimination of the radar vehicle trackings for which no optical vehicle tracking is similar, the process comprising monitoring a parameter derived from first characteristics of a retained radar vehicle tracking.

Abstract: The invention relates to a process for monitoring vehicles on a road by a system comprising at least one radar sensor and a second sensor different from the radar sensor, wherein the second remote sensor is a time-of-flight optical sensor or optical image sensor, the process comprising a temporal readjustment and a spatial matching in order to obtain a set of measurement points each assigned to first characteristics derived from the radar data and second characteristics derived from the optical data, the determination of the radar vehicle trackings and of the optical vehicle trackings, a comparison of similarity between the radar vehicle trackings and the optical vehicle trackings, the elimination of the radar vehicle trackings for which no optical vehicle tracking is similar, the process comprising monitoring a parameter derived from first characteristics of a retained radar vehicle tracking.

Abstract: The invention provides a distinguishing device for distinguishing, between vehicles passing in front of the device, a heavy goods vehicle (HGV) from a coach including over its entire length windows between a top side member and a bottom side member, the device comprising: a vertical stack of emitters of incident beams towards at least top halves of flanks of at least some of the vehicles; a vertical stack of receivers for detecting the beams that are reflected by the flanks of said vehicles; calculation means for calculating the time that elapses between each emission of a beam and the detection of the corresponding reflected beam in order to establish an image of each vehicle flank; and image processor means for detecting therein the absence or the presence of a top side member.

Abstract: The invention provides a distinguishing device for distinguishing, between vehicles passing in front of the device, a heavy goods vehicle (HGV) from a coach including over its entire length windows between a top side member and a bottom side member, the device comprising: a vertical stack of emitters of incident beams towards at least top halves of flanks of at least some of the vehicles; a vertical stack of receivers for detecting the beams that are reflected by the flanks of said vehicles; calculation means for calculating the time that elapses between each emission of a beam and the detection of the corresponding reflected beam in order to establish an image of each vehicle flank; and image processor means for detecting therein the absence or the presence of a top side member.