This is an official pytorch implementation of Fast Human Pose Estimation.
In this work, we focus on the two problems
- How to reduce the model size and computation using a model-agnostic method.
- How to improve the performance of the reduced model.
In our paper
- We reduce the model size and computation through reducing the width and depth of a network.
- Propose the fast pose distillation (FPD) to improve the performance of the reduced model.
The results on the MPII dataset demonstrate the effectiveness of our approach. We re-implemented the FPD using the HRNet codebase and provided extra evaluation on the COCO dataset. Our method (FPD) can work without ground-truth labels, it can utilize unlabeled images.
For the MPII dataset
- We first trained a teacher model (hourglass model, stacks=8, num_features=256, 90.520@MPII [email protected]) and a student model (hourglass model, stacks=4, num_features=128, 89.040@MPII [email protected]).
- We then used the teacher model's prediction and the ground-truth label to co-supervisie the student model (hourglass model, stacks=4, num_features=128, 87.934@MPII [email protected]).
- Our experiment shows 1.106% gain from FPD.
For the COCO dataset
- We first trained a teacher model (HRNet-W48, input size=256x192, 75.0@COCO-Valid-Set AP) and a student model (HRNet-W32, input size=256x192, 74.4@COCO-Valid-Set AP).
- We then used the teacher model's prediction and the ground-truth label to co-supervisie the student model (HRNet-W32, input size=256x192, 75.1@COCO-Valid-Set AP).
- Our experiment shows 0.7% gain from FPD.
If you want to further improve the performance of the student model.You can remove the supervision of ground-truth label in the FPD when there are unlabeled images.
| Arch | Head | Shoulder | Elbow | Wrist | Hip | Knee | Ankle | Mean | [email protected] |
|---|---|---|---|---|---|---|---|---|---|
| hourglass_teacher | 97.169 | 96.382 | 90.830 | 86.466 | 90.012 | 86.802 | 82.664 | 90.520 | 38.275 |
| hourglass_student | 96.828 | 95.194 | 87.728 | 82.919 | 87.900 | 82.551 | 78.270 | 87.934 | 34.634 |
| hourglass_student_FPD* | 96.385 | 94.905 | 87.847 | 81.875 | 87.225 | 81.906 | 78.955 | 87.598 | 34.359 |
| hourglass_student_FPD | 96.930 | 95.550 | 89.040 | 84.444 | 88.939 | 84.021 | 80.703 | 89.040 | 36.144 |
Note:
- Flip test is used.
- Input size is 256x256.
- hourglass_student_FPD* means not using pretrained students.
- Not using multi-scale test.
- Batch size is 4.
- The PCKh metric implemented in the HRNet codebase for MPII dataset is slightly different from that in our paper.
- The performance of hourglass implemented using pytorch is lower than that implemented using torch(paper).
| Arch | Input size | #Params | GFLOPs | AP | Ap .5 | AP .75 | AP (M) | AP (L) | AR | AR .5 | AR .75 | AR (M) | AR (L) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| pose_hrnet_w48_teacher | 256x192 | 63.6M | 14.6 | 0.750 | 0.906 | 0.824 | 0.713 | 0.819 | 0.803 | 0.941 | 0.867 | 0.760 | 0.866 |
| pose_hrnet_w32_student | 256x192 | 28.5M | 7.1 | 0.744 | 0.905 | 0.819 | 0.708 | 0.810 | 0.798 | 0.942 | 0.865 | 0.757 | 0.858 |
| pose_hrnet_w32_student_FPD | 256x192 | 28.5M | 7.1 | 0.751 | 0.906 | 0.823 | 0.714 | 0.820 | 0.804 | 0.943 | 0.869 | 0.762 | 0.865 |
Note:
- Flip test is used.
- Person detector has person AP of 56.4 on COCO val2017 dataset.
- GFLOPs is for convolution and linear layers only.
- Batch Size is 24.
The code is developed using python 3.5 on Ubuntu 16.04. NVIDIA GPUs are needed. The code is developed and tested using 4 TITAN XP GPU cards. Other platforms or GPU cards are not fully tested.
For the MPII dataset, the original annotation files are in matlab format. We have converted them into json format, you also need to download them from OneDrive or GoogleDrive.
Extract them under {POSE_ROOT}/data, your directory tree should look like this:
${POSE_ROOT}/data/mpii
├── images
└── mpii_human_pose_v1_u12_1.mat
|—— annot
| |—— gt_valid.mat
└── |—— test.json
| |—— train.json
| |—— trainval.json
| |—— valid.json
└── images
|—— 000001163.jpg
|—— 000003072.jpg
For the COCO dataset, your directory tree should look like this:
${POSE_ROOT}/data/coco
├── annotations
├── images
│ ├── test2017
│ ├── train2017
│ └── val2017
└── person_detection_results
Your directory tree should look like this:
$HOME/models
├── pytorch
│ ├── imagenet
│ │ ├── hrnet_w32-36af842e.pth
│ │ ├── hrnet_w48-8ef0771d.pth
│ │ └── resnet50-19c8e357.pth
│ ├── pose_coco
│ │ ├── pose_hrnet_w32_256x192.pth
│ │ └── pose_hrnet_w48_256x192.pth
│ └── pose_mpii
│ ├── bs4_hourglass_128_4_1_16_0.00025_0_140_87.934_model_best.pth
│ ├── bs4_hourglass_256_8_1_16_0.00025_0_140_90.520_model_best.pth
│ ├── pose_hrnet_w32_256x256.pth
│ └── pose_hrnet_w48_256x256.pth
└── student_FPD
├── hourglass_student_FPD*.pth
├── hourglass_student_FPD.pth
└── pose_hrnet_w32_student_FPD.pth
Setting the parameters in the file prepare_env.sh as follows:
# DATASET_ROOT=$HOME/datasets
# COCO_ROOT=${DATASET_ROOT}/MSCOCO
# MPII_ROOT=${DATASET_ROOT}/MPII
# MODELS_ROOT=${DATASET_ROOT}/modelsThen execute:
bash prepare_env.shIf you like, you can prepare the environment step by step
For MPII dataset: [GoogleDrive] [BaiduDrive]
-
hourglass student model
-
hourglass teacher model
For COCO dataset: [GoogleDrive] [BaiduDrive]
-
HRNet-W32 student model
-
HRNet-W48 teacher model
# COCO dataset training
cd scripts/fpd_coco
bash run_train_hrnet.sh
# MPII dataset training
cd scripts/fpd_mpii
bash run_train_hrnet.sh # using hrnet model
bash run_train_hg.sh # using hourglass model
# General training methods, we also provide script shell
cd scripts/mpii
bash run_train_hrnet.sh # using hrnet model
bash run_train_hg.sh # using hourglass model
bash run_train_resnet.sh # using resnet model
cd scripts/coco
bash run_train_hrnet.sh # using hrnet model
bash run_train_hg.sh # using hourglass model
bash run_train_resnet.sh # using resnet modelFor MPII dataset:
hourglass student FPD model
For COCO dataset:
HRNet-W32 student FPD model
Note:
-
coco_hrnet_w48_fpd_w32_256x256: pose_hrnet_w32_student_FPD model training resutls.
-
mpii_hourglass_8_256_fpd_hg_4_128_not_pretrained: hourglass_student_FPD* model training resutls.
-
mpii_hourglass_8_256_fpd_hg_4_128_pretrained: hourglass_student_FPD model training resutls.
If you use our code or models in your research, please cite with:
@InProceedings{Zhang_2019_CVPR,
author = {Zhang, Feng and Zhu, Xiatian and Ye, Mao},
title = {Fast Human Pose Estimation},
booktitle = {The IEEE Conference on Computer Vision and Pattern Recognition (CVPR)},
month = {June},
year = {2019}
}
Fast_Human_Pose_Estimation_Pytorch
Thanks for the open-source HRNet
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