Exposing DeepFake Videos By Detecting Face Warping Artifacts

Yuezun Li and Siwei Lyu
University at Albany, State University of New York, USA
IEEE Conference on Computer Vision and Pattern Recognition Workshops (CVPRW), 2019
https://arxiv.org/abs/1811.00656

Contents

1. Overview
2. Requirements
3. Usage
4. Train

Overview

Our method is based on the observations that current DeepFake algorithm can only generate images of limited resolutions, which need to be further warped to match the original faces in the source video. Such transforms leave distinctive artifacts in the resulting DeepFake videos, see the figure above. Our method detects such artifacts by comparing the generated face areas and their surrounding regions with a dedicated Convolutional Neural Network (CNN) model.

Negative Samples

To train the CNN model, we simplify the process by simulating the resolution inconsistency in affine face warpings directly. Specifically, we first detect faces and then extract landmarks to compute the transform matrices to align the faces to a standard configuration. We apply Gaussian blurring to the aligned face, which is then affine warped back to original image using the inverse of the estimated transformation matrix, see the figure above

Requirements

• Tensorflow 1.3.0
• Ubuntu 16.04
• CUDA 8.0
• Python 2.7 with following packages

  yaml==3.12
  easydict==1.7
  matplotlib==1.5.3
  dlib==19.16.0
  opencv==3.4.0
  

Usage

1. The trained models can be download in resolution-net-models. Unzip and put model files into folder ckpt_NETNAME.

2. The testing data (images or videos) is put in folder folder/of/test_data. Then run demo.py which will return a list that contains the "fake" probability of each input data. If there is no face existed in input data, 0 is returned.

    python demo.py --input_dir=folder/of/test_data
   

Train Data preparation

Face images for training can be downloaded from the public dataset. I put several links here.

http://web.mit.edu/emeyers/www/face_databases.html
http://biometrics.put.poznan.pl/put-face-database/
https://github.com/StephenMilborrow/muct
http://www2.ece.ohio-state.edu/~aleix/ARdatabase.html
http://pics.psych.stir.ac.uk/2D_face_sets.htm

The data download from these datset are positive samples. Since we focus on the artifacts introduced in the inconsistency of resolution between face area and surrounding area, the negative samples do not have to be DeepFake generated images. Thus the negative samples for our training can be easily created. Please check paper for more details.

Citation

Please cite our paper in your publications if it helps your research:

@inproceedings{li2019exposing,
  title={Exposing DeepFake Videos By Detecting Face Warping Artifacts},
  author={Li, Yuezun and Lyu, Siwei},
  booktitle={IEEE Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)},
  year={2019}
}

Notice

This repository is NOT for commecial use. It is provided "as it is" and we are not responsible for any subsequence of using this code.