This repository contains TensorFlow implementation for the ICCP2019 paper PhaseCam3D — Learning Phase Masks for Passive Single View Depth Estimation by Yicheng Wu, Vivek Boominathan, Huaijin Chen, Aswin Sankaranarayanan, and Ashok Veeraraghavan.

Clone this repo.

git clone https://github.com/YichengWu/PhaseCam3D
cd PhaseCam3D/

The code is developed using Python 3.7.1 and TensorFlow 1.13.0. The GPU we used is NVIDIA GTX 1080 Ti (11G). Change batch_size accordingly if you run the code with different GPU memory.

The dataset is modified based on FlyingThings3D in Scene Flow Datasets. The pre-processed TFrecord files can be downloaded from Google Drive. It contains 5077 training patches, 553 validation patches, and 419 test patches.

To train the entire framework, simply run the following code.

python depth_estimation.py

Inside the code, results_dir is the output result directory, DATA_PATH is the directory of the downloaded dataset. The learning rate of the optical layer and digital network can be set individually using lr_optical and lr_digital. Detailed instruction about choosing the learning rate can be found in paper Sec. IIID(d).

We use Tensorboard for logging training progress. Recommended: execute tensorboard --logdir /path/to/save_dir --port 9001 and visit localhost:9001 in the browser.

Once the network is trained, the performance can be evaluated using the testing dataset.

python depth_estimation_test.py

Change results_dir to the place you save your model. Once the testing is finished, a new folder called test_all will be created inside the model directory. It contains 400 scenes, and each one includes a clean image sharp.png, a coded image blur.png, an estimated disparity map phiHat.png, and a ground truth disparity map phiGT.png.

If you want to see the performance of our best result, please download from Google Drive. Sample images are shown below.

We did a comprehensive ablation study by varying the learning rate, initialization, and loss. All the results are listed here. Please let us know if you outperform our results!

If you use this code for your research, please cite our papers.

@inproceedings{wu2019phasecam3d,
  title={PhaseCam3D—Learning Phase Masks for Passive Single View Depth Estimation},
  author={Wu, Yicheng and Boominathan, Vivek and Chen, Huaijin and Sankaranarayanan, Aswin and Veeraraghavan, Ashok},
  booktitle={2019 IEEE International Conference on Computational Photography (ICCP)},
  pages={1--12},
  year={2019},
  organization={IEEE}
}

If you have any questions/comments/bug reports, feel free to open a github issue or pull a request or e-mail to the author Yicheng Wu (yicheng.wu@rice.edu).