HiNet: Deep Image Hiding by Invertible Network

This repo is the official code for

• HiNet: Deep Image Hiding by Invertible Network.
  • Junpeng Jing, Xin Deng, Mai Xu, Jianyi Wang, Zhenyu Guan.

Published on ICCV 2021. By MC2 Lab @ Beihang University.

Dependencies and Installation

• Python 3 (Recommend to use Anaconda).
• PyTorch = 1.0.1 .
• See environment.yml for other dependencies.

Get Started

• Run python train.py for training.

• Run python test.py for testing.

• Set the model path (where the trained model saved) and the image path (where the image saved during testing) to your local path.

  line45: MODEL_PATH = ''

  line49: IMAGE_PATH = ''

Dataset

• In this paper, we use the commonly used dataset DIV2K, COCO, and ImageNet.

• For train or test on your own dataset, change the code in config.py:

  line30: TRAIN_PATH = ''

  line31: VAL_PATH = ''

Trained Model

• Here we provide a trained model.

• Fill in the MODEL_PATH and the file name suffix before testing by the trained model.

• For example, if the model name is model.pt and its path is /home/usrname/Hinet/model/, set MODEL_PATH = '/home/usrname/Hinet/model/' and file name suffix = 'model.pt'.

Training Demo (2021/12/25 Updated)

• Here we provide a training demo to show how to train a converged model in the early training stage. During this process, the model may suffer from explosion. Our solution is to stop the training process at a normal node and abate the learning rate. Then, continue to train the model.

• Note that in order to log the training process, we have imported logging package, with slightly modified train_logging.py and util.py files.

• Stage1: Run python train_logging.py for training with initial config.py (learning rate=10^-4.5).

  The logging file is train__211222-183515.log. (The values of r_loss and g_loss are reversed due to a small bug, which has been debuged in stage2.)
  
  See the tensorboard:
  
  
  Note that in the 507-th epoch the model exploded. Thus, we stop the stage1 at epoch 500.

• Stage2: Set suffix = 'model_checkpoint_00500.pt' and tain_next = True and trained_epoch = 500.

  Change the learning rate from 10^-4.5 to 10^-5.0.

  Run python train_logging.py for training.
  The logging file is train__211223-100502.log.
  
  See the tensorboard:
  
  
  Note that in the 1692-th epoch the model exploded. Thus, we stop the stage2 at epoch 1690.

• Stage3: Similar operation.

  Change the learning rate from 10^-5.0 to 10^-5.2.

  The logging file is train__211224-105010.log.
  
  See the tensorboard:
  
  
  We can see that the network has initially converged. Then, you can change the super-parameters lamda according to the PSNR to balance the quality between stego image and recovered image. Note that the PSNR in the tensorboard is RGB-PSNR and in our paper is Y-PSNR.

Others

• The batchsize_val in config.py should be at least 2*number of gpus and it should be divisible by number of gpus.

Citation

If you find our paper or code useful for your research, please cite:

@InProceedings{Jing_2021_ICCV,
    author    = {Jing, Junpeng and Deng, Xin and Xu, Mai and Wang, Jianyi and Guan, Zhenyu},
    title     = {HiNet: Deep Image Hiding by Invertible Network},
    booktitle = {Proceedings of the IEEE/CVF International Conference on Computer Vision (ICCV)},
    month     = {October},
    year      = {2021},
    pages     = {4733-4742}
}