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<!-- [ALGORITHM] --> | ||
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<details> | ||
<summary align="right"><a href="https://openaccess.thecvf.com/content/CVPR2022/html/Wang_Contextual_Instance_Decoupling_for_Robust_Multi-Person_Pose_Estimation_CVPR_2022_paper.html">CID (CVPR'2022)</a></summary> | ||
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```bibtex | ||
@InProceedings{Wang_2022_CVPR, | ||
author = {Wang, Dongkai and Zhang, Shiliang}, | ||
title = {Contextual Instance Decoupling for Robust Multi-Person Pose Estimation}, | ||
booktitle = {Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)}, | ||
month = {June}, | ||
year = {2022}, | ||
pages = {11060-11068} | ||
} | ||
``` | ||
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</details> | ||
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<!-- [DATASET] --> | ||
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<details> | ||
<summary align="right"><a href="https://link.springer.com/chapter/10.1007/978-3-319-10602-1_48">COCO (ECCV'2014)</a></summary> | ||
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```bibtex | ||
@inproceedings{lin2014microsoft, | ||
title={Microsoft coco: Common objects in context}, | ||
author={Lin, Tsung-Yi and Maire, Michael and Belongie, Serge and Hays, James and Perona, Pietro and Ramanan, Deva and Doll{\'a}r, Piotr and Zitnick, C Lawrence}, | ||
booktitle={European conference on computer vision}, | ||
pages={740--755}, | ||
year={2014}, | ||
organization={Springer} | ||
} | ||
``` | ||
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</details> | ||
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Results on COCO val2017 without multi-scale test | ||
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| Arch | Input Size | AP | AP<sup>50</sup> | AP<sup>75</sup> | AR | AR<sup>50</sup> | ckpt | log | | ||
| :-------------------------------------------- | :--------: | :---: | :-------------: | :-------------: | :---: | :-------------: | :-------------------------------------------: | :-------------------------------------------: | | ||
| [CID](/configs/body/2d_kpt_sview_rgb_img/cid/coco/hrnet_w32_coco_512x512.py) | 512x512 | 0.702 | 0.887 | 0.768 | 0.755 | 0.926 | [ckpt](https://download.openmmlab.com/mmpose/bottom_up/cid/hrnet_w32_coco_512x512-867b9659_20220928.pth) | [log](https://download.openmmlab.com/mmpose/bottom_up/cid/hrnet_w32_coco_512x512-20220928.log.json) | |
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Collections: | ||
- Name: CID | ||
Paper: | ||
Title: Contextual Instance Decoupling for Robust Multi-Person Pose Estimation | ||
URL: https://openaccess.thecvf.com/content/CVPR2022/html/Wang_Contextual_Instance_Decoupling_for_Robust_Multi-Person_Pose_Estimation_CVPR_2022_paper.html | ||
README: https://github.com/open-mmlab/mmpose/blob/master/docs/en/papers/algorithms/cid.md | ||
Models: | ||
- Config: configs/body/2d_kpt_sview_rgb_img/cid/coco/hrnet_w32_coco_512x512.py | ||
In Collection: CID | ||
Metadata: | ||
Architecture: | ||
- CID | ||
Training Data: COCO | ||
Name: cid_hrnet_w32_coco_512x512 | ||
Results: | ||
- Dataset: COCO | ||
Metrics: | ||
AP: 0.702 | ||
AP@0.5: 0.887 | ||
AP@0.75: 0.768 | ||
AR: 0.755 | ||
AR@0.5: 0.926 | ||
Task: Body 2D Keypoint | ||
Weights: https://download.openmmlab.com/mmpose/bottom_up/cid/hrnet_w32_coco_512x512-867b9659_20220928.pth |
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configs/body/2d_kpt_sview_rgb_img/cid/coco/hrnet_w32_coco_512x512.py
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_base_ = [ | ||
'../../../../_base_/default_runtime.py', | ||
'../../../../_base_/datasets/coco.py' | ||
] | ||
checkpoint_config = dict(interval=20) | ||
evaluation = dict(interval=20, metric='mAP', save_best='AP') | ||
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optimizer = dict( | ||
type='Adam', | ||
lr=0.001, | ||
) | ||
optimizer_config = dict(grad_clip=None) | ||
# learning policy | ||
lr_config = dict(policy='step', step=[90, 120]) | ||
total_epochs = 140 | ||
channel_cfg = dict( | ||
dataset_joints=17, | ||
dataset_channel=[ | ||
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16], | ||
], | ||
inference_channel=[ | ||
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 | ||
]) | ||
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data_cfg = dict( | ||
image_size=512, | ||
base_size=256, | ||
base_sigma=2, | ||
heatmap_size=[128], | ||
num_joints=channel_cfg['dataset_joints'], | ||
dataset_channel=channel_cfg['dataset_channel'], | ||
inference_channel=channel_cfg['inference_channel'], | ||
num_scales=1, | ||
scale_aware_sigma=False, | ||
with_bbox=True, | ||
use_nms=True, | ||
soft_nms=False, | ||
oks_thr=0.8, | ||
) | ||
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# model settings | ||
model = dict( | ||
type='CID', | ||
pretrained='https://download.openmmlab.com/mmpose/' | ||
'pretrain_models/hrnet_w32-36af842e.pth', | ||
backbone=dict( | ||
type='HRNet', | ||
in_channels=3, | ||
extra=dict( | ||
stage1=dict( | ||
num_modules=1, | ||
num_branches=1, | ||
block='BOTTLENECK', | ||
num_blocks=(4, ), | ||
num_channels=(64, )), | ||
stage2=dict( | ||
num_modules=1, | ||
num_branches=2, | ||
block='BASIC', | ||
num_blocks=(4, 4), | ||
num_channels=(32, 64)), | ||
stage3=dict( | ||
num_modules=4, | ||
num_branches=3, | ||
block='BASIC', | ||
num_blocks=(4, 4, 4), | ||
num_channels=(32, 64, 128)), | ||
stage4=dict( | ||
num_modules=3, | ||
num_branches=4, | ||
block='BASIC', | ||
num_blocks=(4, 4, 4, 4), | ||
num_channels=(32, 64, 128, 256), | ||
multiscale_output=True)), | ||
), | ||
keypoint_head=dict( | ||
type='CIDHead', | ||
in_channels=480, | ||
gfd_channels=32, | ||
num_joints=17, | ||
multi_hm_loss_factor=1.0, | ||
single_hm_loss_factor=4.0, | ||
contrastive_loss_factor=1.0, | ||
max_train_instances=200, | ||
prior_prob=0.01), | ||
train_cfg=dict(), | ||
test_cfg=dict( | ||
num_joints=channel_cfg['dataset_joints'], | ||
flip_test=True, | ||
max_num_people=30, | ||
detection_threshold=0.01, | ||
center_pool_kernel=3)) | ||
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train_pipeline = [ | ||
dict(type='LoadImageFromFile'), | ||
dict( | ||
type='BottomUpRandomAffine', | ||
rot_factor=30, | ||
scale_factor=[0.75, 1.5], | ||
scale_type='short', | ||
trans_factor=40), | ||
dict(type='BottomUpRandomFlip', flip_prob=0.5), | ||
dict(type='ToTensor'), | ||
dict( | ||
type='NormalizeTensor', | ||
mean=[0.485, 0.456, 0.406], | ||
std=[0.229, 0.224, 0.225]), | ||
dict( | ||
type='CIDGenerateTarget', | ||
max_num_people=30, | ||
), | ||
dict( | ||
type='Collect', | ||
keys=[ | ||
'img', 'multi_heatmap', 'multi_mask', 'instance_coord', | ||
'instance_heatmap', 'instance_mask', 'instance_valid' | ||
], | ||
meta_keys=[]), | ||
] | ||
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val_pipeline = [ | ||
dict(type='LoadImageFromFile'), | ||
dict(type='BottomUpGetImgSize', test_scale_factor=[1]), | ||
dict( | ||
type='BottomUpResizeAlign', | ||
transforms=[ | ||
dict(type='ToTensor'), | ||
dict( | ||
type='NormalizeTensor', | ||
mean=[0.485, 0.456, 0.406], | ||
std=[0.229, 0.224, 0.225]), | ||
]), | ||
dict( | ||
type='Collect', | ||
keys=['img'], | ||
meta_keys=[ | ||
'image_file', 'aug_data', 'test_scale_factor', 'base_size', | ||
'center', 'scale', 'flip_index' | ||
]), | ||
] | ||
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test_pipeline = val_pipeline | ||
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data_root = 'data/coco' | ||
data = dict( | ||
workers_per_gpu=2, | ||
train_dataloader=dict(samples_per_gpu=20), | ||
val_dataloader=dict(samples_per_gpu=1), | ||
test_dataloader=dict(samples_per_gpu=1), | ||
train=dict( | ||
type='BottomUpCocoDataset', | ||
ann_file=f'{data_root}/annotations/person_keypoints_train2017.json', | ||
img_prefix=f'{data_root}/train2017/', | ||
data_cfg=data_cfg, | ||
pipeline=train_pipeline, | ||
dataset_info={{_base_.dataset_info}}), | ||
val=dict( | ||
type='BottomUpCocoDataset', | ||
ann_file=f'{data_root}/annotations/person_keypoints_val2017.json', | ||
img_prefix=f'{data_root}/val2017/', | ||
data_cfg=data_cfg, | ||
pipeline=val_pipeline, | ||
dataset_info={{_base_.dataset_info}}), | ||
test=dict( | ||
type='BottomUpCocoDataset', | ||
ann_file=f'{data_root}/annotations/person_keypoints_val2017.json', | ||
img_prefix=f'{data_root}/val2017/', | ||
data_cfg=data_cfg, | ||
pipeline=test_pipeline, | ||
dataset_info={{_base_.dataset_info}}), | ||
) |
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# Contextual Instance Decoupling for Robust Multi-Person Pose Estimation | ||
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<!-- [ALGORITHM] --> | ||
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<details> | ||
<summary align="right"><a href="https://openaccess.thecvf.com/content/CVPR2022/html/Wang_Contextual_Instance_Decoupling_for_Robust_Multi-Person_Pose_Estimation_CVPR_2022_paper.html">CID (CVPR'2022)</a></summary> | ||
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```bibtex | ||
@InProceedings{Wang_2022_CVPR, | ||
author = {Wang, Dongkai and Zhang, Shiliang}, | ||
title = {Contextual Instance Decoupling for Robust Multi-Person Pose Estimation}, | ||
booktitle = {Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)}, | ||
month = {June}, | ||
year = {2022}, | ||
pages = {11060-11068} | ||
} | ||
``` | ||
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</details> | ||
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## Abstract | ||
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<!-- [ABSTRACT] --> | ||
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Crowded scenes make it challenging to differentiate persons and locate their pose keypoints. This paper proposes the Contextual Instance Decoupling (CID), which presents a new pipeline for multi-person pose estimation. Instead of relying on person bounding boxes to spatially differentiate persons, CID decouples persons in an image into multiple instance-aware feature maps. Each of those feature maps is hence adopted to infer keypoints for a specific person. Compared with bounding box detection, CID is differentiable and robust to detection errors. Decoupling persons into different feature maps allows to isolate distractions from other persons, and explore context cues at scales larger than the bounding box size. Experiments show that CID outperforms previous multi-person pose estimation pipelines on crowded scenes pose estimation benchmarks in both accuracy and efficiency. For instance, it achieves 71.3% AP on CrowdPose, outperforming the recent single-stage DEKR by 5.6%, the bottom-up CenterAttention by 3.7%, and the top-down JCSPPE by 5.3%. This advantage sustains on the commonly used COCO benchmark. | ||
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<!-- [IMAGE] --> | ||
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<div align=center> | ||
<img src="https://github.com/kennethwdk/CID/raw/main/img/framework.png"> | ||
</div> |
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