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.