Learning to Reduce Information Bottleneck for Object Detection in Aerial Images

• URL: http://arxiv.org/abs/2204.02033v1
• Date: Tue, 5 Apr 2022 07:46:37 GMT
• Title: Learning to Reduce Information Bottleneck for Object Detection in Aerial Images
• Authors: Yuchen Shen and Zhihao Song and Liyong Fu and Xuesong Jiang and Qiaolin Ye
• Abstract summary: We first analyse the importance of the neck network in object detection frameworks from the theory of information bottleneck. We propose a global semantic network, which acts as a bridge from the backbone to the head network in a bidirectional global convolution manner. Compared to the existing neck networks, our method has advantages of capturing rich detailed information and less computational costs.
• Score: 5.4547979989237225
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Object detection in aerial images is a fundamental research topic in the domain of geoscience and remote sensing. However, advanced progresses on this topic are mainly focused on the designment of backbone networks or header networks, but surprisingly ignored the neck ones. In this letter, we first analyse the importance of the neck network in object detection frameworks from the theory of information bottleneck. Then, to alleviate the information loss problem in the current neck network, we propose a global semantic network, which acts as a bridge from the backbone to the head network in a bidirectional global convolution manner. Compared to the existing neck networks, our method has advantages of capturing rich detailed information and less computational costs. Moreover, we further propose a fusion refinement module, which is used for feature fusion with rich details from different scales. To demonstrate the effectiveness and efficiency of our method, experiments are carried out on two challenging datasets (i.e., DOTA and HRSC2016). Results in terms of accuracy and computational complexity both can verify the superiority of our method.

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