SYSTEM AND METHOD FOR DETECTING AND RECOGNIZING RECTANGULAR TRAFFIC SIGNS

摘要

This invention is directed to a method for detection and recognition of rectangular traffic signs by detecting, tracking, and recognizing the traffic signs. The method comprises the steps of receiving a plurality of image frames captured by a camera mounted in a vehicle; detecting, in an initialized region of interest (ROI) of each received image frame, to determine whether a traffic sign appears; if a traffic sign appears, starting tracking the traffic sign in a tracking ROI of each received image frame; calculating a rotation angle of the tracked traffic sign and correcting the same with the rotation angle; segmenting digits of the traffic sign into a digit patch; and recognizing the traffic sign based on the digit patch. The present invention is also directed to a system for detecting, tracking, and recognizing rectangular traffic signs, containing the respective units for performing at least the corresponding steps of the method.