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Article type: Research Article
Authors: Liu, Yanga | Yi, Ranb | Ma, Dingc | Wang, Yongfua; *
Affiliations: [a] School of Mechanical Engineering and Automation, Northeastern University, Shenyang, China | [b] China Huaneng Clean Energy Research Institute, Beijing, China | [c] College of Energy and Power, Shenyang Institute of Engineering, Shenyang, China
Correspondence: [*] Corresponding author. Yongfu Wang, School of Mechanical Engineering and Automation, Northeastern University, No. 3-11 Wenhua Road, Shenyang 110819, China. E-mail: [email protected].
Abstract: Due to the complexity of the maritime environment and the diversity of the volume and shape of monitored objects in the maritime, existing object detection algorithms based on Convolutional Neural Networks (CNN) are challenging to balance the requirements of high accuracy and high real-time simultaneously in the field of maritime object detection. In response to the characteristics of complex backgrounds, significant differences in object size between categories, and the characteristic of having a large number of small objects in maritime surveillance videos and images, the Maritime dataset with rich scenes and object categories was self-made, and the OS-YOLOv7 algorithm was proposed based on the YOLOv7 algorithm. Firstly, a feature enhancement module named the TC-ELAN module based on the self-attention mechanism was designed, which enables the feature map used for detection to obtain enhanced semantic information fused from multiple scale features. Secondly, in order to enhance the attention to the area of dense small objects and further improve the positioning accuracy of occluded small objects, this study redesigned the SPPCSPC structure. Then, the network structure was improved to alleviate the problem of decreased object detection accuracy caused by the loss of semantic feature information. Finally, experimental results on self-made datasets and mainstream maritime object detection datasets show that OS-YOLOv7 has a better object detection effect compared to other state-of-the-art (SOTA) object detection algorithms at the cost of reasonable inference time and parameter quantity and can achieve good object detection accuracy on mainstream datasets with high real-time performance.
Keywords: Object detection, real-time, maritime, object recognition, multi-scale
DOI: 10.3233/JIFS-237263
Journal: Journal of Intelligent & Fuzzy Systems, vol. 46, no. 3, pp. 7259-7271, 2024
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