Recognition for driving across central-line of on-board information image monitoring system

Aiming to automatically judging if a driver is driving in violation of regulations at real time, the paper discusses recognition of driving across the central-line according to images taken by an on-board CCD image sensor. By use of image understanding and computer vision techniques, models have been established for perspective projection and vehicle´s driving recognition across the central-line. The equation of straight line is achieved from dots of planar images of road traffic marking lines and lateral distance is deduced between the left-front wheel and the traffic marking line. The experimental results show that the distance from calculation are coincident with reality and can correctly decide driver´s some security violations such as driving across the solid central-line, driving along the solid central-line, and driving along the converse roadway.