in lambda/states/area.py [0:0]
def is_inside_area_box(face_area_box, face_box):
return (face_area_box[0] <= face_box[0] and
face_area_box[1] <= face_box[1] and
face_area_box[0] + face_area_box[2] >= face_box[0] + face_box[2] and
face_area_box[1] + face_area_box[3] >= face_box[1] + face_box[3])