self-made_ava 改编自 https://github.com/Blueyao17/self-made_ava_dataset_tool faster rcnn下载 https://download.openmmlab.com/mmdetection/v2.0/faster_rcnn/faster_rcnn_r50_fpn_2x_coco/faster_rcnn_r50_fpn_2x_coco_bbox_mAP-0.384_20200504_210434-a5d8aa15.pth