what is the preprocessing of the input image?

[wangzheng456123]

I downloads ana run your code on my platform follow your instruction, and I have download all the dependence of this project, but I find dispite the demo picture, all the other input will get almost the same result. I think some preprocessing is needed for the input picture, but I cannot find it on your project page or the paper, can you please tell me what preprocessing you do for the input picture? I will thank you more if you can show me the preprocessing code

[HaoKun-Li]

The authors have shown the preprocessing procedure in paper: https://openaccess.thecvf.com/content_CVPR_2019/papers/Sanyal_Learning_to_Regress_3D_Face_Shape_and_Expression_From_an_CVPR_2019_paper.pdf