What Makes for End-to-End Object Detection?

      Peize Sun 1 Yi Jiang 2 Enze Xie 1 Wenqi Shao 3 Zehuan Yuan 2 Changhu Wang 2 Ping Luo 1

             Abstract
    Object detection has recently achieved a
    breakthrough for removing the last one non-
    differentiable component in the pipeline,
    Non-Maximum Suppression (NMS), and build-
    ing up an end-to-end system. However, what
    makes for its one-to-one prediction has not been
    well understood. In this paper, we first point out ...