weihua93 / TSD

1st place models in Google OpenImage Detection Challenge 2019

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News: 2020.6.9: We add supports for Mask RCNN and Cascade RCNN. The pretrained models are also released via GoogleDrive.

2020.5.8: We add supports for fp16 training with TSD and update the performance on X101_64x4d backbone.

2020.4.29: We reimplement the TSD algorithm based on the MMDetection framework.


Revisiting the Sibling Head in Object Detector (CVPR 2020) (https://arxiv.org/abs/2003.07540)

1st place solutions for openimage 2019 (https://arxiv.org/abs/2003.07557)


The installation of MMDetection can be found from the official github(https://github.com/open-mmlab/mmdetection)

TSD is a plugin detector head which is friendly to any anchor-based two stage detectors (Faster RCNN, Mask RCNN and so on).



V1.0: We firstly reimplement the experiments based on Faster RCNN with Resnet families.

The SharedFCBBoxHead is used as the sibling head.

The corresponding configuration can be found in (faster_rcnn_r50_fpn_TSD_1x.py, faster_rcnn_r101_fpn_TSD_1x.py, faster_rcnn_r152_fpn_TSD_1x.py)


  1. LR can be set to base_lr*total_batch (base_lr=0.00125, 0.04 = 0.00125*32 in our experiments.)
  2. An external epoch can be used to perform warmup. (base_lr will be incresed to LR in the first epoch)


Reimplemented methods and backbones are shown in the below table. It's based on the Faster RCNN with FPN. More backbones and experiments are underway. (If you want to obtain the pretrained models via other manners, please send me e-mail).

For standard Faster RCNN

Backbone TSD AP AP_0.5 AP_0.75 AP_s AP_m AP_l Download
ResNet50 36.2 58.1 39.0 21.8 39.9 46.1
ResNet50 40.9 61.9 44.4 24.2 44.4 54.0 model
ResNet101 38.9 60.6 42.4 22.3 43.6 50.6
ResNet101 42.3 63.1 45.9 25.1 46.3 56.5 model
ResNet152 40.5 62.1 44.5 24.6 45.0 51.8
ResNet152 43.7 64.5 47.6 26.1 48.0 57.5 model

For Mask RCNN

Backbone TSD AP AP_0.5 AP_0.75 AP_s AP_m AP_l MaskAP Download
ResNet50 41.2 61.9 44.7 24.3 44.8 54.8 35.8 model

For Cascade RCNN

Backbone TSD AP AP_0.5 AP_0.75 AP_s AP_m AP_l Download
ResNet50 - - - - - -
ResNet50 42.0 59.9 45.4 24.3 45.5 57.1 model
ResNet101 41.8 60.0 45.5 24.4 45.8 55.1
ResNet101 42.9 60.8 46.4 24.8 46.5 57.7 model
ResNet101_mstest 45.0 63.6 49.2 28.7 49.1 57.8


We will continue to update the pretrained models of some heavy backbones. We train the ResNext101-64x4d model with DCN and multi-scale training. Evaluation is performed on COCO minival with multi-scale test.

Backbone TSD AP AP_0.5 AP_0.75 AP_s AP_m AP_l Download
X-101-64x4d-FPN 49.2 70.1 53.8 33.2 53.1 63.7 model


Please refer to MMdetection for installation and dataset preparation.

Get Started

./tools/slurm_train.sh dev TSD configs/faster_rcnn_r152_fpn_TSD_1x.py exp/TSD_r152/ 16


If the TSD helps your research, please cite the follow papers.

  title={Revisiting the Sibling Head in Object Detector},
  author={Song, Guanglu and Liu, Yu and Wang, Xiaogang},
  title={1st Place Solutions for OpenImage2019--Object Detection and Instance Segmentation},
  author={Liu, Yu and Song, Guanglu and Zang, Yuhang and Gao, Yan and Xie, Enze and Yan, Junjie and Loy, Chen Change and Wang, Xiaogang},
  journal={arXiv preprint arXiv:2003.07557},


If you have any questions, please contact (songguanglu@sensetime.com).


1st place models in Google OpenImage Detection Challenge 2019

License:Apache License 2.0


Language:Python 87.0%Language:Cuda 7.6%Language:C++ 5.3%Language:Shell 0.1%Language:Dockerfile 0.0%