forked from: https://gist.github.com/lzhbrian/bde87ab23b499dd02ba4f588258f57d5
usage: python align_face_multi.py --input_dir /path/to/img_dir
crop/align faces to FFHQ-style
forked from: https://gist.github.com/lzhbrian/bde87ab23b499dd02ba4f588258f57d5
usage: python align_face_multi.py --input_dir /path/to/img_dir