Lane marker position detection method and lane marker position detecting device as well as lane departure warning device

摘要

PROBLEM TO BE SOLVED: To provide a lane marker position detecting method and lane maker position detecting device capable of detecting a lane maker position provided on a road surface without performing a large amount of calculation processing and a lane deviation alarm apparatus.;SOLUTION: This method for a detecting position of a lane marker relating to the present invention takes an image of a road surface 4 by a camera 2 loaded on a vehicle 3, converts the image taken by the camera 2 into an overlooked image, detects an integral brightness by integrating coordinates of a direction X which is in a direction perpendicular to a road width direction Y of the road surface 4 shown in the overlooked image which is converted and detects the integrated brightness by coordinates of the road width direction Y. Thereafter, a lane marker position provided on the road surface 4 is detected by obtaining a position of the road surface 4 corresponding to the coordinates of the road width direction Y indicating a high integral brightness from a distribution of the detected integral brightness.;COPYRIGHT: (C)2004,JPO