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1.西安电子科技大学综合业务网理论及关键技术国家重点实验室,陕西西安 710071
2.重庆邮电大学图像认知重庆市重点实验室,重庆 400065
Received:05 July 2021,
Revised:2021-09-26,
Published:25 April 2022
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杨曦,张鑫,郭浩远等.基于不变特征的多源遥感图像舰船目标检测算法[J].电子学报,2022,50(04):887-899.
YANG Xi,ZHANG Xin,GUO Hao-yuan,et al.Invariant Features Based Ship Detection Model for Multi-source Remote Sensing Images[J].ACTA ELECTRONICA SINICA,2022,50(04):887-899.
杨曦,张鑫,郭浩远等.基于不变特征的多源遥感图像舰船目标检测算法[J].电子学报,2022,50(04):887-899. DOI: 10.12263/DZXB.20210842.
YANG Xi,ZHANG Xin,GUO Hao-yuan,et al.Invariant Features Based Ship Detection Model for Multi-source Remote Sensing Images[J].ACTA ELECTRONICA SINICA,2022,50(04):887-899. DOI: 10.12263/DZXB.20210842.
由于域偏移的存在,多源图像舰船目标检测任务面临着不同源传感器带来的图像风格差异难题.另外,为特定数据源训练特定的检测模型会消耗大量的计算资源,严重限制了其在军民用领域的工程应用.因此,设计一个通用网络以有效检测来自不同源遥感数据的舰船目标成了当下的研究热点.针对该需求,本文提出了一种基于不变特征的通用舰船目标检测方法,通过充分利用多源数据之间的共享知识实现通用遥感目标的网络检测.本方法由2部分组成:图像级的风格转换网络和特征级的域自适应网络.具体地,前者采用风格转换网络生成接近真实分布的伪多源图像,拉近多源数据之间的分布,在图像层面上学习多源数据的不变特征;为学习特征层面上多源数据的不变特征,后者通过适应网络对多源特征进行信息解耦,通过域注意力网络的自适应权重分配实现特征重组.本文在NWPU VHR-10,SSDD,HRSC和SAR-Ship-Dataset数据集上进行实验验证,结果表明:所提方法通过不变特征之间的信息互补,缓解了域偏移问题,可有效检测多源遥感数据.本文方法在上述多源数据集上的平均mAP为90.8%,相比现有主流舰船目标检测方法可以提高1.4%~10.6%.
Due to the domain shift
ship detection in multi-source data suffers from image variations caused by different source sensors. In addition
training a specific model for a particular data source consumes high computational cost
which severely limits its practical application in military and civilian fields. Therefore
designing a universal network to effectively detect ship objects from multi-source remote sensing images has become a research hotspot. To this end
the paper proposes a universal ship detection algorithm based on invariant features
which realizes a universal remote sensing object detection network by fully utilizing the shared knowledge among multi-source data. Our method mainly consists of two parts
i.e.
an image-level style transfer network and a feature-level domain adaptive network. Specifically
the former employs style transfer network to generate pseudo-multi-source images that are close to the real distribution
narrow the distribution between multi-source data
and extract the invariant features of multi-source data at the image level; To extract invariant features at the feature level
the latter decouples the multi-source features through adaptive network
and realizes feature reorganization through adaptive weight allocation of domain attention network. We evaluate the proposed method using multiple datasets including NWPU VHR-10
SSDD
HRSC and SAR-Ship-Dataset. Experimental results show that the proposed method alleviates the problem of domain shift by complementing the information between invariant features
and can effectively detect multi-source remote sensing data. The average mAP of our method on the above-mentioned multi-source datasets is 90.8%
which exceeds 1.4%-10.6% compared with the existing mainstream ship object detection methods.
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