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Open Access

ARTICLE

ES-YOLO: Edge and Shape Fusion-Based YOLO for Traffic Sign Detection

Weiguo Pan1, Songjie Du2,*, Bingxin Xu1, Bin Zhang1, Hongzhe Liu1
1 Beijing Key Laboratory of Information Service Engineering, Beijing Union University, Beijing, 100101, China
2 School of Computer Science and Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
* Corresponding Author: Songjie Du. Email: email

Computers, Materials & Continua https://doi.org/10.32604/cmc.2025.073599

Received 22 September 2025; Accepted 22 December 2025; Published online 21 January 2026

Abstract

Traffic sign detection is a critical component of driving systems. Single-stage network-based traffic sign detection algorithms, renowned for their fast detection speeds and high accuracy, have become the dominant approach in current practices. However, in complex and dynamic traffic scenes, particularly with smaller traffic sign objects, challenges such as missed and false detections can lead to reduced overall detection accuracy. To address this issue, this paper proposes a detection algorithm that integrates edge and shape information. Recognizing that traffic signs have specific shapes and distinct edge contours, this paper introduces an edge feature extraction branch within the backbone network, enabling adaptive fusion with features of the same hierarchical level. Additionally, a shape prior convolution module is designed to replaces the first two convolutional modules of the backbone network, aimed at enhancing the model’s perception ability for specific shape objects and reducing its sensitivity to background noise. The algorithm was evaluated on the CCTSDB and TT100k datasets, and compared to YOLOv8s, the mAP50 values increased by 3.0% and 10.4%, respectively, demonstrating the effectiveness of the proposed method in improving the accuracy of traffic sign detection.

Keywords

Traffic sign; edge information; shape prior; feature fusion; object detection

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