TSD

News: 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.

Paper:

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)

Introduction

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).

Changelog

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)

Tips:

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

Experiments

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.

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

TBD

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

Installation

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

Citations

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

@article{song2020revisiting,
  title={Revisiting the Sibling Head in Object Detector},
  author={Song, Guanglu and Liu, Yu and Wang, Xiaogang},
  journal={CVPR},
  year={2020}
}
@article{liu20201st,
  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},
  year={2020}
}

Contact

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

License

GloriaHM/TSD

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