[4] SANG J, GUO P, XIANG Z, et al. Vehicle detection based on faster-RCNN[J]. Journal of Chongqing University, 2017, 40(7): 32-36.

[9] SHORTEN C,KHOSHGOFTAAR T M. A survey on image data augmentation for deep learning[J]. Journal of Big Data, 2019,6(1): 1-48.

[10] CHETHAN K B,PUNITHA R,MOHANA M. YOLOv3 and YOLOv4:multiple object detection for surveillance applications[C]// 2020 Third International Conference on Smart Systems and Inventive Technology(ICSSIT). Tirunelveli,India:IEEE, 2020.

[11] ZHENG Z H,WANG P,LIU W,et al. Distance-IOU loss:faster and better learning for bounding box regression[C]// Proceedings of the AAAI Conference on Artificial Intelligence. New York,USA:AAAI, 2020:12993-13000.

[12] ZHANG Y F, REN W, ZHANG Z, et al. Focal and efficient IOU loss for accurate bounding box regression[J/OL]. arXiv: 2101.08158v1.