METHOD AND APPARATUS FOR DETECTING SPEED-LIMIT SIGN AND RECOGNIZING SPEED LIMIT IN REAL TIME BY USING SPATIAL PYRAMID FEATURES

摘要

The present invention relates to a method and apparatus for detecting a speed-limit sign and recognizing a speed limit in real time by using spatial pyramid features. More specifically, the method for detecting a speed-limit sign and recognizing a speed limit in real time by using spatial pyramid features comprises: (1) a step (S100) of extracting a candidate region for a speed-limit sign from an input image; (2) a step (S200) of determining whether the extracted candidate region corresponds to a speed-limit sign; and (3) a step (S300) of recognizing a speed limit of the speed-limit sign. According to the method and apparatus for detecting a speed-limit sign and recognizing a speed limit in real time by using spatial pyramid features, which are proposed by the present invention, spatial pyramid features and a BoostRandomForest function are used to extract a speed-limit sign and to recognize a speed limit of the extracted speed-limit sign, thereby improving speed required to extract the speed-limit sign and to recognize the speed limit of the extracted speed-limit sign. Furthermore, according to the present invention, a speed-limit sign is extracted in real time, and a speed related to the speed-limit sign is rapidly recognized. Accordingly, the newest traffic information is provided to a driver, thereby improving convenience and safety of the driver.;COPYRIGHT KIPO 2017