face detection annotation with google vision

face_detect.py

from google.cloud import vision
from google.cloud.vision import types

def detect_face(face_file, max_results=4):
  
    client = vision.ImageAnnotatorClient()
    
    content = face_file.read()
    image = types.Image(content=content)
    
    return client.face_detection(image=image, max_results=max_results).face_annotations