FCOS: Fully Convolutional One-Stage Object Detection; Zhi Tian, Chunhua Shen, Hao Chen, and Tong He; In: Proc. Int. Conf. Computer Vision (ICCV), 2019. arXiv preprint arXiv:1904.01355 The full paper is available at: https://arxiv.org/abs/1904.01355....