DETECTION ET SUIVI DE RAILS DANS UN FLUX VIDEO

A method for detecting and monitoring rails in images of a video stream filmed parallel to the axis of the rails, comprising, for at least one image of the video stream, the step of: Forming (E2) an image of rail contours (ICi), Characterised in that it comprises, for said at least one image of the video stream, the steps of: Estimating, by particle filtering (E3), a set of weighted models of representations of rails (Mj), as a function of the image of rail contours, each model being defined by parameters which comprise the x-coordinates of control points of a representation of a central axis of the rails in a frame of reference defined in the image, the y-coordinates of the control points being predefined and distinct, and coefficients of a linear function representing the distance between the representation of the central axis of the rails and, respectively, representations of the left and right rails as a function of the y-coordinate in the frame of reference of the image, and Estimating (E4) the position of the rails in the image as a function of the set of weighted models.