Focal Loss for Dense Object Detection解讀

還是Tsung-Yi Lin Piotr Dollar kaiming ross他們在Detection領域做的貢獻Focal Loss for Dense Object Detection Motivation single stage的檢測方法如YOLO、SSD等簡單高效，但是精度往往不如two stage的如Faster/Mask RCNN，本文發現single stage不如two sta

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