[2] [2] LIN T Y,GOYAL P,GIRSHICK R,et al.Focal loss for dense object detection［C］//IEEE International Conference on Computer Vision(ICCV).Venice:IEEE,2017:2999-3007.

[3] [3] REN S Q,HE K M,GIRSHICK R,et al.Faster R-CNN:towards real-time object detection with region proposal networks［J］.IEEE Transactions on Pattern Analysis and Machine Intelligence,2017,39(6):1137-1149.

[10] [10] LIU W,ANGUELOV D,ERHAN D,et al.SSD:single shot MultiBox detector［C］//European Conference on Computer Vision.Cham:Springer,2016:21-37.

[11] [11] REDMON J,DIVVALA S,GIRSHICK R,et al.You only look once:unified,real-time object detection［C］//IEEE Conference on Computer Vision and Pattern Recognition.Las Vegas:IEEE,2016:779-788.

[12] [12] GIRSHICK R,DONAHUE J,DARRELL T,et al.Rich feature hierarchies for accurate object detection and semantic segmentation［C］//IEEE Conference on Computer Vision and Pattern Recognition.Columbus:IEEE, 2014:580-587.

[13] [13] GIRSHICK R.Fast R-CNN［C］//IEEE International Conference on Computer Vision.Santiago:IEEE,2015:1440-1448.

[14] [14] REN S Q,HE K M,GIRSHICK R,et al.Faster R-CNN:towards real-time object detection with region proposal networks［J］.IEEE Transactions on Pattern Analysis and Machine Intelligence,2017,39(6):1137-1149.

[15] [15] HOU Q B,ZHOU D Q,FENG J S.Coordinate attention for efficient mobile network design［C］//IEEE/CVF Conference on Computer Vision and Pattern Recognition.Nashville:IEEE,2021:13708-13717.

[16] [16] CHEN L C,PAPANDREOU G,KOKKINOS I,et al.Deeplab:semantic image segmentation with deep convolutional nets,atrous convolution,and fully connected CRFs［J］.IEEE Transactions on Pattern Analysis and Machine Intelligence,2018,40(4):834-848.

[17] [17] HE K,ZHANG X,REN S,et al.Spatial pyramid pooling in deep convolutional networks for visual recognition［J］.IEEE Transactions on Pattern Analysis and Machine Intelligence,IEEE,2015,37(9):1904-1916.

[18] [18] LIN T Y,DOLLR P,GIRSHICK R,et al.Feature pyramid networks for object detection［C］//IEEE Conference on Computer Vision and Pattern Recognition.Honolulu:IEEE,2017:936-944.

[19] [19] LIU S,QI L,QIN H F,et al.Path aggregation network for instance segmentation［C］//IEEE/CVF Conference on Computer Vision and Pattern Recognition.Salt Lake City:IEEE,2018:8759-8768.

[20] [20] ZHENG Z H,WANG P,LIU W,et al.Distance-IoU loss:faster and better learning for bounding box regression［C］//AAAI Conference on Artificial Intelligence.Palo Alto:AAAI Press,2020:12993-13000.

[21] [21] LONG Y,GONG Y P,XIAO Z F,et al.Accurate object localization in remote sensing images based on convolutional neural networks［J］.IEEE Transactions on Geoscience and Remote Sensing,2017,55(5):2486-2498.