The performance of detection in COCO

[peipei_zx]

Based on MMDetection，train COCO2017 & val COCO2017

FasterR-CNN,r50 From torchvision://resnet50

       1x: bbox_mAP: 0.3750

FasterR-CNN,r50 From My Reproduction Model Pretrained on ImageNet

       1x: bbox_mAP: 0.3580

FasterR-CNN,r50 From Your Pretrained Mode on ImageNetl

       1x: bbox_mAP: 0.3550

Which is not as good as expected? Could you give a help？

[Xinlong Wang]

Did you use SyncBN for each component during the detector training? If not, you should do so.
Please see this config for reference.
The reason can be found in MoCo paper.

[peipei_zx]

Did you use SyncBN for each component during the detector training? If not, you should do so.
Please see this config for reference.
The reason can be found in MoCo paper.

Thanks for your quick reply, I will try it, and updates the results

[peipei_zx]

Based on MMDetection，train COCO2017 & val COCO2017, No freeze stage,Add SyncBN

FasterR-CNN,r50 From torchvision://resnet50

       1x: bbox_mAP: 0.3740

FasterR-CNN,r50 From My Reproduction Model Pretrained on ImageNet

       1x: bbox_mAP: 0.3780

FasterR-CNN,r50 From Your Pretrained Mode on ImageNetl

       1x: bbox_mAP: 0.3750