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[CVPR 2020] 3D Photography using Context-aware Layered Depth Inpainting

[Paper] [Project Website] [Google Colab]

We propose a method for converting a single RGB-D input image into a 3D photo, i.e., a multi-layer representation for novel view synthesis that contains hallucinated color and depth structures in regions occluded in the original view. We use a Layered Depth Image with explicit pixel connectivity as underlying representation, and present a learning-based inpainting model that iteratively synthesizes new local color-and-depth content into the occluded region in a spatial context-aware manner. The resulting 3D photos can be efficiently rendered with motion parallax using standard graphics engines. We validate the effectiveness of our method on a wide range of challenging everyday scenes and show fewer artifacts when compared with the state-of-the-arts.

3D Photography using Context-aware Layered Depth Inpainting Meng-Li Shih, Shih-Yang Su, Johannes Kopf, and Jia-Bin Huang In IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2020.

Prerequisites

Linux (tested on Ubuntu 18.04.4 LTS)
Anaconda
Python 3.7 (tested on 3.7.4)
PyTorch 1.4.0 (tested on 1.4.0 for execution)

and the Python dependencies listed in requirements.txt

To get started, please run the following commands:

conda create -n 3DP python=3.7 anaconda
conda activate 3DP
pip install -r requirements.txt
conda install pytorch==1.4.0 torchvision==0.5.0 cudatoolkit==10.1.243 -c pytorch

Next, please download the model weight using the following command:
```
chmod +x download.sh
./download.sh
```

Quick start

Please follow the instructions in this section. This should allow to execute our results. For more detailed instructions, please refer to DOCUMENTATION.md.

Execute

Put .jpg files (e.g., test.jpg) into the image folder.
- E.g., image/moon.jpg
Run the following command
```
python main.py --config argument.yml
```
- Note: The 3D photo generation process usually takes about 2-3 minutes depending on the available computing resources.
The results are stored in the following directories:
- Corresponding depth map estimated by MiDaS
  - E.g. depth/moon.npy, depth/moon.png
  - User could edit depth/moon.png manually.
    - Remember to set the following two flags as listed below if user wants to use manually edited depth/moon.png as input for 3D Photo.
      - depth_format: '.png'
      - require_midas: False
- Inpainted 3D mesh (Optional: User need to switch on the flag save_ply)
  - E.g. mesh/moon.ply
- Rendered videos with zoom-in motion
  - E.g. video/moon_zoom-in.mp4
- Rendered videos with swing motion
  - E.g. video/moon_swing.mp4
- Rendered videos with circle motion
  - E.g. video/moon_circle.mp4
- Rendered videos with dolly zoom-in effect
  - E.g. video/moon_dolly-zoom-in.mp4
  - Note: We assume that the object of focus is located at the center of the image.
(Optional) If you want to change the default configuration. Please read DOCUMENTATION.md and modified argument.yml.

License

This work is licensed under MIT License. See LICENSE for details.

If you find our code/models useful, please consider citing our paper:

@inproceedings{Shih3DP20,
  author = {Shih, Meng-Li and Su, Shih-Yang and Kopf, Johannes and Huang, Jia-Bin},
  title = {3D Photography using Context-aware Layered Depth Inpainting},
  booktitle = {IEEE Conference on Computer Vision and Pattern Recognition (CVPR)},
  year = {2020}
}

Acknowledgments

We thank Pratul Srinivasan for providing clarification of the method Srinivasan et al. CVPR 2019.
We thank the author of Zhou et al. 2018, Choi et al. 2019, Mildenhall et al. 2019, Srinivasan et al. 2019, Wiles et al. 2020, Niklaus et al. 2019 for providing their implementations online.
Our code builds upon EdgeConnect, MiDaS and pytorch-inpainting-with-partial-conv