[ECCV 2020] Flow-edge Guided Video Completion

[Paper] [Project Website] [Google Colab]

We present a new flow-based video completion algorithm. Previous flow completion methods are often unable to retain the sharpness of motion boundaries. Our method first extracts and completes motion edges, and then uses them to guide piecewise-smooth flow completion with sharp edges. Existing methods propagate colors among local flow connections between adjacent frames. However, not all missing regions in a video can be reached in this way because the motion boundaries form impenetrable barriers. Our method alleviates this problem by introducing non-local flow connections to temporally distant frames, enabling propagating video content over motion boundaries. We validate our approach on the DAVIS dataset. Both visual and quantitative results show that our method compares favorably against the state-of-the-art algorithms.

[ECCV 2020] Flow-edge Guided Video Completion
Chen Gao, Ayush Saraf, Jia-Bin Huang, and Johannes Kopf
In European Conference on Computer Vision (ECCV), 2020

Prerequisites

Linux (tested on CentOS Linux release 7.4.1708)
Anaconda
Python 3.8 (tested on 3.8.5)
PyTorch 1.6.0

and the Python dependencies listed in requirements.txt

To get started, please run the following commands:

conda create -n FGVC
conda activate FGVC
conda install pytorch=1.6.0 torchvision=0.7.0 cudatoolkit=10.1 matplotlib scipy opencv -c pytorch
pip install imageio imageio-ffmpeg scikit-image imutils

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

Quick start

Object removal:

cd tool
python video_completion.py \
       --mode object_removal \
       --path ../data/tennis \
       --path_mask ../data/tennis_mask \
       --outroot ../result/tennis_removal \
       --seamless

FOV extrapolation:

cd tool
python video_completion.py \
       --mode video_extrapolation \
       --path ../data/tennis \
       --outroot ../result/tennis_extrapolation \
       --H_scale 2 \
       --W_scale 2 \
       --seamless

You can remove the --seamless flag for a faster processing time.

License

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

If you find this code useful for your research, please consider citing the following paper:

@inproceedings{Gao-ECCV-FGVC,
    author    = {Gao, Chen and Saraf, Ayush and Huang, Jia-Bin and Kopf, Johannes},
    title     = {Flow-edge Guided Video Completion},
    booktitle = {European Conference on Computer Vision},
    year      = {2020}
}

Acknowledgments