Volume 10 Issue 4
Aug.  2021
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Article Navigation >  Journal of Radars  > 2021  >  10(4): 531-543
Zhou Yu, Wang Hai-peng, Chen Si-zhe. SAR Automatic Target Recognition Based on Numerical Scattering Simulation and Model-based Matching[J]. Journal of Radars, 2015, 4(6): 666-673. doi: 10.12000/JR15080
Citation: ZHOU Xueke, LIU Chang, and ZHOU Bin. Ship detection in SAR images based on multi-scale features fusion and channel relation calibration of features[J]. Journal of Radars, 2021, 10(4): 531–543. doi: 10.12000/JR21021
shu

Ship Detection in SAR Images Based on Multiscale Feature Fusion and Channel Relation Calibration of Features

DOI: 10.12000/JR21021
  • 1.

    University of Chinese Academy of Sciences, Beijing 100049, China

  • 2.

    Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China

Funds:  The State Key Research Development Program of China (2017YFB0503001)
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  • Corresponding author: ZHOU Xueke, zhouxk96@163.com
  • Received Date: 2021-03-04
  • Rev Recd Date: 2021-04-05
    • Available Online: 2021-04-29
  • Publish Date: 2021-08-28
    Abstract
  • Deep-learning technology has enabled remarkable results for ship detection in SAR images. However, in view of the complex and changeable backgrounds of SAR ship images, how to accurately and efficiently extract target features and improve detection accuracy and speed is still a huge challenge. To solve this problem, a ship detection algorithm based on multiscale feature fusion and channel relation calibration of features is proposed in this paper. First, based on Faster R-CNN, a channel attention mechanism is introduced to calibrate the channel relationship between features in the feature extraction network, so as to improve the network’s expression ability for extraction of ship features in different scenes. Second, unlike the original method of generating candidate regions based on single-scale features, this paper introduces an improved feature pyramid structure based on a neural architecture search algorithm, which helps improve the performance of the network. The multiscale features are effectively fused to settle the problem of missing detections of small targets and adjacent inshore targets. Experimental results on the SSDD dataset show that, compared with the original Faster R-CNN, the proposed algorithm improves detection accuracy from 85.4% to 89.4% and the detection rate from 2.8 FPS to 10.7 FPS. Thus, this method effectively achieves high-speed and high-accuracy SAR ship detection, which has practical benefits.

     

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    • References(28)
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      沈阳化工大学材料科学与工程学院 沈阳 110142

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