摘要： 基于多纵卷积神经网络的交通标志识别算法识别率较高，但识别和训练时间较长，实用性较差。为此，构造一种基于多尺度卷积神经网络的道路交通标志识别模型。通过改进单尺度卷积神经网络中特征提取的基网络，将网络不同层级所产生的特征融合为多尺度特征并提供给分类器，以提高低层特征的利用率。在GTSRB数据集上的实验结果表明，该模型准确识别率达到99.25%，与多纵卷积神经网络模型相比，其在保证高精度的同时，识别和训练时间的降幅均超过90%，更适用于真实路况下交通标志的精准检测。

关键词: 多层特征, 多尺度卷积神经网络, 多纵卷积神经网络, 交通标志识别, 单尺度卷积神经网络

Abstract: The traffic sign recognition algorithm based on multi-column Convolutional Neural Network(CNN) has an ideal recognition rate,but its recognition and training time is longer,so its practicability is poorer.Therefore,a road traffic sign detection model based on multi-scale CNN is constructed.By improving the base network of feature extraction in the single-scale CNN,the features generated by different layers of the network are fused into multi-scale features and provided to the classifier,so as to improve the utilization of the lower features.Experimental results on the GTSRB dataset show that the traffic sign recognition of the model is 99.25%.Compared with the multi-column CNN neural network model,while ensuring high accuracy,the recognition and training time decreases by more than 90%,which is more suitable for the accurate detection of traffic signs under real road conditions.

Key words: multi-layer feature, multi-scale Convolutional Neural Network(CNN), multi-column CNN, traffic sign recognition, single-scale CNN

中图分类号: 

• TP183