The present invention relates to a three-
lane detection method based on image morphological segmentation and
region growing. The method comprises: a method for, by using a shape of a lane mark and a relative
gray level of a roadway, performing segmentation on the lane mark by means of image morphology; a method for fitting a
vanishing point by using a weighted least square method; and a method for forming a
region of interest (ROI) of the lane mark by a
region growing method and iteratively searching for a feature point of the lane mark. According to the three-
lane detection method based on image morphological segmentation and
region growing, aimed at the problem of
perception of a vehicle-mounted
visual system of an intelligent vehicle to a multi-lane road in a process of driving on the urban structural multi-lane road, a method of carrying out image morphology preprocessing and carrying out iterative solution on the lane mark is adopted to adapt to a multi-lane environment. The method is novel in
algorithm, high in adaptability, relatively high in illumination robustness, small in computation amount and easy to implement by
programming, so that a module of the vehicle-mounted
visual system is improved, and the efficiency and environmental adaptability of an intelligent vehicle environment sensing module are further improved.