Recognize Prohibition Traffic Sign Based on SVM Network and HOG Feature

Abstract:
In order to recognize prohibition traffic sign, this paper proposes a novel method which is trained by a small number of samples and based on the feature of Histogram of Oriented Gradient (HOG) and Support Vector Machine (SVM) network. The recognition method is mainly divided into three stages. The first stage is image pre-processing, which includes image interception based on ellipse detection, image resizing and Γ correction. In the part of image interception, a new ellipse detection method called RHT_MCN is proposed based on RHT, which uses the Maximum Coincidence Number (MCN) of image edge points and detected ellipse edge to choose the final ellipse for image interception. The second stage is the feature extraction of HOG. The third stage is the Prohibition Traffic Sign Recognition (PTSR) based on SVM network. In the design and implementation of the PTSR model, a new single-layer SVM network is proposed. The ascending spiral training method of recognition model is introduced in detail. Finally, the data from GTSRB was used to test and analyze the prohibition traffic sign recognition method. The method is proved to have good applicability.