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Acta Armamentarii ›› 2025, Vol. 46 ›› Issue (1): 231124-.doi: 10.12382/bgxb.2023.1124

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Small UVA Target Detection Algorithm Based on Multi-scale Attention Mechanism

FENG Yingbin, GUO Xiaozun*(), YAN Jiahua   

  1. College of Automation and Electrical Engineering, Shenyang Ligong University, Shenyang 110159, Liaoning, China
  • Received:2023-11-22 Online:2025-01-25
  • Contact: GUO Xiaozun

Abstract:

A SBE_YOLOv8s small target detection algorithm based on multi-scale attention mechanism is proposed for the UAV aerial images with high density,small target size and complex background.First,a feature extraction module EF_C2f(EMA-Faster Block_C2f) based on the multi-scale attention mechanism is designed to replace the C2f module in the YOLOv8 network to improve the network’s ability to extract small target features.And then a P1 detection layer is added to the feature fusion network,and a cross-scale feature fusion structure BPAN(Bi-Path Aggregation Network) is designed to fuse the small target feature information.Finally,a tiny target detection head is added,and SIoU Loss is used as the bounding-box loss function to improve the detection accuracy of small targets and the convergence speed of the network.The proposed algorithm is validated on the public dataset VisDrone2019.Compared with YOLOv8s algorithm,the proposed algorithm improves the detection accuracy by 6.9% and mAP50 by 9.1%,and reduces the amount of parameters of the model is by 46.4%,and the detection speed is 28 fps.The experimental results show that the proposed algorithm has a certain degree of utility in the field of small target detection.

Key words: multi-scale attention mechanism, YOLOv8s algorithm, feature extraction, cross-scale feature fusion, small target detection

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