Design and application of routing extraction algorithm based on dynamic threshold

A dynamic threshold algorithm of routing image was designed to improve the robustness and instantaneity of vehicle routing information extraction, based on the histogram partition threshold and gradient detection threshold. Firstly, the routing image is binarized by segmentation image, and then the navigation routing is extracted to obtain the classification of navigation routing, according to the continuity of routing image. Finally, a visual navigation control system of four wheels intelligent vehicle is realized with PID controller to manifest the effect of the presented routing extraction algorithm. The experiment results show that the intelligent vehicle system can track the routing exactly, and the whole speed is improved.