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Robust Japanese Road Sign Detection and Recognition in Complex Scenes Using Convolutional Neural Networks

Ryo Hasegawa, Yutaro Iwamoto, and Yen-Wei Chen
College of Information Science and Engineering, Ritsumeikan University, Shiga, Japan

Abstract—In recent years, the development of image processing technologies used for autonomous driving has been remarkable. Automatic detection and recognition of road signs are required for the practical use of autonomous vehicles. In the detection and recognition of road signs, changes in scale and contrast greatly affect the accuracy. In this study, we solve this problem by learning road signs using a deep learning technique that is robust against scale changes, and thought an experiment, we compare our method with recently proposed deep learning methods. We also show the results using our proposed method for individual Japanese road signs. The proposed method shows higher accuracy in the detection and recognition of road signs than the faster Region-based Convolutional Neural Network (Faster R-CNN) and Single Shot multibox Detector (SSD) methods.

Index Terms—deep learning, detection, recognition, selfdriving technology, road sign

Cite: Ryo Hasegawa, Yutaro Iwamoto, and Yen-Wei Chen, "Robust Japanese Road Sign Detection and Recognition in Complex Scenes Using Convolutional Neural Networks," Journal of Image and Graphics, Vol. 8, No. 3, pp. 59-66, September 2020. doi: 10.18178/joig.8.3.59-66

Copyright © 2020 by the authors. This is an open access article distributed under the Creative Commons Attribution License (CC BY-NC-ND 4.0), which permits use, distribution and reproduction in any medium, provided that the article is properly cited, the use is non-commercial and no modifications or adaptations are made.