🔍 New Problem in Low-level Vision: Film Removal

• 🚩 Goal: Film Removal (FR) aims to remove the interference of wrinkled transparent films and reconstruct the original information under the films.
• 🚩This technique is used in industrial recognition systems.

📢 News and Updates

• ✅ May 28, 2024. We release the pre-trained model of Film Removal in K-ford. Check this Google Cloud link for DOWNLOAD.
• ✅ May 06, 2024. We release the code of Film Removal.
• ✅ May 06, 2024. We release the dataset of Film Removal. Check this Google Cloud link for DOWNLOAD.

▶️ Getting Started

🪒 Installation

• Python >= 3.8.2
• PyTorch >= 1.8.1
• Install Polanalyser for processing polarization image

  pip install git+https://github.com/elerac/polanalyser
  

• Install other dependencies by

  pip install -r requirements.txt
  

💾 Dataset Preparation

• Google Drive Link for DOWNLOAD dataset.

• Data Structure: each K* directory contains the data for one fold of the dataset. The GT directory contains the ground truth images, and the input directory contains the input images at different polarized angles.

• The dataset is organized as follows:

  ├── K1
  │   ├── GT
  │   │   └── 2DCode
  │   │       └── 1_gt_I.bmp
  │   └── input
  │       └── 2DCode
  │           ├── 1_input_0.bmp
  │           ├── 1_input_45.bmp
  │           ├── 1_input_90.bmp
  │           └── 1_input_135.bmp
  ├── K2
  │   ├── ...
  ├── ...
  └── K10
      ├── ...
  

🏰 Pretrained Model

• Google Drive Link for downloading our Pretrained Model in K-Ford.

🔨 Configuration

• The configuration files for testing and training.

• The Test_K_ford option specifies the number of folds for K-fold cross-validation during testing. The dataroot option specifies the root directory for the dataset, which is set to Dataset. Other configuration settings include learning rate schemes, loss functions, and logger options.

  datasets:
    train:
      name: Reconstruction
      mode: LQGT_condition
      Test_K_ford: K10 # remove from training
      dataroot: /remote-home/share/jiaqi2/Dataset
      dataroot_ratio: ./
      use_shuffle: true
      n_workers: 0
      batch_size: 1
      GT_size: 0
      use_flip: true
      use_rot: true
      condition: image
    val:
      name: Reconstruction
      mode: LQGT_condition_Val
      Test_K_ford: K10 # for testing
      dataroot: /remote-home/share/jiaqi2/Dataset
      dataroot_ratio: ./
      condition: image
  

⏳ Testing

• Modify dataroot, Test_K_ford and pretrain_model_G in testing configuration, then run

  python test.py -opt ./codes/options/test/test.yml
  

• The test results will be saved to ./results/testset_name, including Restored Image and Prior.

🖥️ Training

• Modify dataroot and Test_K_ford in training configuration, then run

  python train.py -opt ./codes/options/train/train.yml
  

• The logs, models and training states will be saved to ./experiments/name. You can also use tensorboard for monitoring for the ./tb_logger/name.

• Restart Training (To add checkpoint in training configuration)

  path:
    root: ./
    pretrain_model_G: .../experiments/K1/models/XX.pth
    strict_load: false
    resume_state: .../experiments/K1/training_state/XX.state
  

⚡ Performance

Compared with other baselines, our model achieves state-of-the-art performance:

⭐ [Table 1] Quantitative evaluation in image reconstruction with 10-fold cross-validation.

Methods	PSNR	SSIM
SHIQ	21.58	0.7499
Polar-HR	22.19	0.7176
Uformer	31.68	0.9426
Restormer	34.32	0.9731
Ours	36.48	0.9824

⭐ [Figure 1] Qualitative Evaluation in image reconstruction.

⭐ [Figure 2-3] Qualitative Evaluation in Industrial Environment. (QR Reading & Text OCR)

🌐 Citations

The following is a BibTeX reference:

@inproceedings{tang2024learning,
  title = {Learning to Remove Wrinkled Transparent Film with Polarized Prior},
  author = {Tang, Jiaqi and Wu, Ruizheng and Xu, Xiaogang and Hu, Sixing and Chen, Ying-Cong},
  booktitle = {IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)},
  year = {2024}
}

📧 Connecting with Us?

If you have any questions, please feel free to send email to jtang092@connect.hkust-gz.edu.cn.

📜 Acknowledgment

This work is supported by the National Natural Science Foundation of China (No. 62206068) and the Natural Science Foundation of Zhejiang Province, China under No. LD24F020002.