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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2023, Vol. 44 ›› Issue (1): 326107.doi: 10.7527/S1000-6893.2021.26107

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Adaptive UAV target tracking algorithm based on multi-scale fusion

Yuanliang XUE, Guodong JIN(), Lining TAN, Jiankun XU   

  1. School of Nuclear Engineering,Rocket Force University of Engineering,Xi’an 710025,China
  • Received:2021-07-15 Revised:2021-08-03 Accepted:2021-08-23 Online:2023-01-15 Published:2021-08-25
  • Contact: Guodong JIN E-mail:641797825@qq.com
  • Supported by:
    National Natural Science Foundation of China(61673017)

Abstract:

To overcome the problems of small size, large variation of scale and interference of similar objects in the Unmanned Aerial Vehicle (UAV) tracking process, an adaptive UAV aerial target tracking algorithm is proposed based on multi-scale attention and feature fusion. Firstly, considering the abundant interference information in the UAV view, a deep and diverse feature extraction network is constructed to provide robust characterization of semantic features and diverse features of the target. Secondly, a multi-scale attention module is designed to suppress interference information while retaining target information at different scales. Then, the feature fusion module is used to fuse different layers of features to effectively integrate detailed and semantic information. Finally, multiple region proposal modules based on anchor-free strategy are used to adaptively perceive the scale variation of the target and make full use of the integrated feature information to achieve accurate localization and robust tracking of the target. The experiments show that the success and precision of the algorithm on the dataset are 61.7% and 81.5% with a speed of 40.5 frame/s. The algorithm has significantly enhanced target discrimination, scale perception and anti-interference capability, and can effectively cope with common challenges in the UAV tracking process.

Key words: unmanned aerial vehicle, object tracking, multi-scale, feature fusion, anchor free

CLC Number: