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Python 3 Pytorch 0.3

FD-GAN: Pose-guided Feature Distilling GAN for Robust Person Re-identification

<p align="center"><img src='framework.jpg' width="600px"></p>

[Paper]

Yixiao Ge*, Zhuowan Li*, Haiyu Zhao, Guojun Yin, Shuai Yi, Xiaogang Wang, and Hongsheng Li
Neural Information Processing Systems (NIPS), 2018 (* equal contribution)

Pytorch implementation for our NIPS 2018 work. With the proposed siamese structure, we are able to learn identity-related and pose-unrelated representations.

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Prerequisites

Getting Started

Installation

pip install scipy, pillow, torchvision, sklearn, h5py, dominate, visdom
git clone https://github.com/yxgeee/FD-GAN
cd FD-GAN/

Datasets

We conduct experiments on Market1501, DukeMTMC-reID, CUHK03 datasets. We need pose landmarks for each dataset during training, so we generate the pose files by Realtime Multi-Person Pose Estimation. And the raw datasets have been preprocessed by the code in open-reid. Download the prepared datasets following below steps:

mkdir datasets
cd datasets/

Usage

As mentioned in the original paper, there are three stages for training our proposed framework.

Stage I: reID baseline pretraining

We use a Siamese baseline structure based on ResNet-50. You can train the model with follow commands,

python baseline.py -b 256 -j 4 -d market1501 -a resnet50 --combine-trainval \
					--lr 0.01 --epochs 100 --step-size 40 --eval-step 5 \
					--logs-dir /path/to/save/checkpoints/

You can train it on specified GPUs by setting CUDA_VISIBLE_DEVICES, and change the dataset name [market1501|dukemtmc|cuhk03] after -d to train models on different datasets.
Or you can download the pretrained baseline model directly following the link below,

<a name="stageI"></a>And test them with follow commands,

python baseline.py -b 256 -d market1501 -a resnet50 --evaluate --resume /path/of/model_best.pth.tar

Stage II: FD-GAN pretraining

We need to pretain FD-GAN with the image encoder part (E in the original paper and net_E in the code) fixed first. You can train the model with follow commands,

python train.py --display-port 6006 --display-id 1 \
	--stage 1 -d market1501 --name /directory/name/of/saving/checkpoints/ \
	--pose-aug gauss -b 256 -j 4 --niter 50 --niter-decay 50 --lr 0.001 --save-step 10 \
	--lambda-recon 100.0 --lambda-veri 0.0 --lambda-sp 10.0 --smooth-label \
	--netE-pretrain /path/of/model_best.pth.tar

You can train it on specified GPUs by setting CUDA_VISIBLE_DEVICES. For main arguments,

Other arguments can be viewed in options.py. Also you can directly download the models for stage II,

There are four models in each directory for separate nets.

Notice: If you use visdom for visualization by setting --display-id 1, you need to open a new window and run the script python -m visdom.server -port=6006 before running the main program, where -port should be consistent with --display-port.

Stage III: Global finetuning

Finetune the whole framework by optimizing all parts. You can train the model with follow commands,

python train.py --display-port 6006 --display-id 1 \
	--stage 2 -d market1501 --name /directory/name/of/saving/checkpoints/ \
	--pose-aug gauss -b 256 -j 4 --niter 25 --niter-decay 25 --lr 0.0001 --save-step 10 --eval-step 5 \
	--lambda-recon 100.0 --lambda-veri 10.0 --lambda-sp 10.0 --smooth-label \
	--netE-pretrain /path/of/100_net_E.pth --netG-pretrain /path/of/100_net_G.pth \
	--netDi-pretrain /path/of/100_net_Di.pth --netDp-pretrain /path/of/100_net_Dp.pth

You can train it on specified GPUs by setting CUDA_VISIBLE_DEVICES.
We trained this model on a setting of batchsize 256. If you don't have such or better hardware, you may decrease the batchsize (the performance may also drop). Or you can directly download our final model,

And test best_net_E.pth by the same way as mentioned in Stage I.

TODO

Citation

Please cite our paper if you find the code useful for your research.

@inproceedings{ge2018fd,
  title={FD-GAN: Pose-guided Feature Distilling GAN for Robust Person Re-identification},
  author={Ge, Yixiao and Li, Zhuowan and Zhao, Haiyu and Yin, Guojun and Yi, Shuai and Wang, Xiaogang and Li, Hongsheng},
  booktitle={Advances in Neural Information Processing Systems},
  pages={1229--1240},
  year={2018}
}

Acknowledgements

Our code is inspired by pytorch-CycleGAN-and-pix2pix and open-reid.