Traffic sign detection algorithm based on improved Faster R-CNN

Zhe LI; Hui-hui ZHANG; Jun-yong DENG

doi:10.37188/CJLCD.2020-0195

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Traffic sign detection algorithm based on improved Faster R-CNN

Image Processing | 更新时间：2021-03-23

- Traffic sign detection algorithm based on improved Faster R-CNN
- Chinese Journal of Liquid Crystals and Displays Vol. 36, Issue 3, Pages: 484-492(2021)
- 作者机构：
  
  西安邮电大学电子工程学院, 陕西西安 710121
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundation of China
- DOI：10.37188/CJLCD.2020-0195
  CLC： TP391.41
- Received：23 August 2020，
  
  Accepted：02 October 2020，
  
  Published：2021-03
- 稿件说明：
移动端阅览
Zhe LI, Hui-hui ZHANG, Jun-yong DENG. Traffic sign detection algorithm based on improved Faster R-CNN[J]. Chinese journal of liquid crystals and displays, 2021, 36(3): 484-492.
DOI：

Zhe LI, Hui-hui ZHANG, Jun-yong DENG. Traffic sign detection algorithm based on improved Faster R-CNN[J]. Chinese journal of liquid crystals and displays, 2021, 36(3): 484-492. DOI： 10.37188/CJLCD.2020-0195.

摘要

针对大视野交通场景下背景复杂和交通标志目标较小的问题，提出一种改进Faster R-CNN检测网络的算法。首先采用深度残差网络ResNet50作为骨干网络，提取交通标志的特征；然后设计了在两个不同层级特征图上使用合理尺度滑动窗口的策略来生成目标建议区域，增强多尺度交通标志的检测能力；最后在残差块中引入注意力机制模块，强化图像的关键信息，抑制图像的背景信息。在中国交通标志数据集上验证了算法的有效性，取得了98.52%的平均检测精度和每幅图像0.042 s的检测速率。本文算法检测效果明显优于原Faster R-CNN检测方法，更适用于复杂场景下的交通标志检测，鲁棒性较强。

Abstract

Aiming at the problems of complex background and small traffic sign target in large view traffic scene

an improved Faster R-CNN detection network algorithm is proposed. Firstly

the deep residual network ResNet50 is used as the backbone network to extract the features of traffic signs. Secondly

the strategy of using reasonable scale sliding window on two different level feature maps is designed to generate the target proposal region to enhance the detection ability of multi-scale traffic signs. Finally

the attention mechanism module is introduced into the residual block to strengthen the key information of the image and suppress the image background information. The validity of the algorithm is verified on the Chinese traffic sign dataset

with an average detection accuracy of 98.52% and a detection rate of 0.042 s per image. The detection effect of the improved algorithm is obviously better than the original Faster R-CNN detection method

and is more suitable for traffic sign detection in complex scenes

with strong robustness.

关键词

Keywords

references

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