Continental Automotive Gmbh

Continental Automotive France

Aumovio Autonomous Mobility Germany Gmbh

Sophie Rony

Gregory Baratoff

Alain Giralt

Thibault Caron

Bertrand Godreau

Laure Bajard

Bilal Hijazi

A method for detecting false positives relating to a traffic light based on a video stream of images captured by a camera on board a motor vehicle, the traffic light being configured so as to switch between a plurality of states, each state being characterized by at least one colored zone representative of a signal. The method includes filtering the images, using a predetermined list of filtering criteria relating to the states of the traffic light, based on a predetermined history of the color of the pixels of the colored zone representing a luminous object detected in the video stream of images so as to detect false positives.

Method for detecting false positives relating to a traffic light

To improve the performance for determining obstruction of a stereoscopic system using two cameras or more, a hybrid of local and semi-global methods is provided. For each stereoscopic image formed from simultaneous left and right images, a breakdown of each left and right image into corresponding sectors is applied. Obstruction level is determined by a disparity map by sector, based on left or right images, and in which a disparity is assigned to each pixel corresponding to the best matching score. A determination of density by sector of the disparity map is carried out by reference to a fraction of pixels with a disparity considered to be valid. A state of obstruction of at least one camera is determined based on a weighted average of the probabilities of obscuring of the sectors of the disparity map obtained by comparison between the density of the sectors and a predefined density level.

Method for determining a state of obstruction of at least one camera installed in a stereoscopic system

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Toulouse, France

Sophie Rony