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Journal of University of Chinese Academy of Sciences ›› 2023, Vol. 40 ›› Issue (4): 531-539.DOI: 10.7523/j.ucas.2021.0081

• Research Articles • Previous Articles     Next Articles

School place identification based on improved YOLOv3

GAO Jinfeng1,2,3, CHEN Yu1, WEI Yongming1, LI Jiannan1,2, JIANG Ruonan1,2   

  1. 1 Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Key Enterprises Laboratory of Smart City Planning of Tianjin, Tianjin Urban Planning and Design Institute Co., Ltd, Tianjin 300000, China
  • Received:2021-12-01 Revised:2021-12-20 Online:2023-07-15

Abstract: The specific place identification based on remote sensing images is of great significance in smart city planning, land use analysis, and safe city construction. However, it is difficult to identify these places with simple rules by using traditional classification or target recognition methods due to the complex environmental background. Convolutional neural networks have strong spatial information mining capabilities. In this article, we improved the well-known YOLOv3 model to a new model called YOLO-S-CIoU for school place identification. The main improvements include:1) Using the SRXnet module to replace the Darknet53 module in YOLOv3 to improve the feature learning ability; 2) Using complete-IoU loss (CIoU loss) to optimize the regression of the bounding box; 3) Training and verification based on self-made school place sample dataset (SS dataset). The results showed that the average accuracy (AP) of YOLO-S-CIoU reached 96.46%; the parameter amount was 226 MB. Compared with YOLOv3, YOLO-S-CIoU has achieved a 9 MB reduction in parameter volume and a 2.3% increase in AP. In addition, in the regional remote sensing images of Tumshuk and Yantai, the recall rates of school places were increased by 37.5% and 42.2% than YOLOv3, respectively. These works show that the improved model has stronger robustness and higher identification ability in remote sensing image identification in different areas.

Key words: YOLO-S-CIoU, SE-ResNeXt, CIoU loss, specific place identification, remote sensing, school identification

CLC Number: