To use facehugger in a project:
from facehugger import get_faces
faces = get_faces('/some/path/to_image.jpg')
To use facehugger from command line:
$ sudo pip install facehugger
$ facehugger -i /path/to/image_with_faces.jpg -o /path/to/dir_to_save_faces
New in version 0.1.5: Added –rescale-face-crop parameter that receives an integer representing percentage to scale up the crop
$ facehugger -i /path/to/image_with_faces.jpg -o /path/to/dir_to_save_faces --rescale-face-crop 20