#coding=utf-8

import cv2
import dlib

path = "img/meinv.png"
img = cv2.imread(path)
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)

#人臉分類器
detector = dlib.get_frontal_face_detector()
# 獲取人臉檢測器
predictor = dlib.shape_predictor(
  "C:\\Python36\\Lib\\site-packages\\dlib-data\\shape_predictor_68_face_landmarks.dat"
)

dets = detector(gray, 1)
for face in dets:
  shape = predictor(img, face) # 尋找人臉的68個標(biāo)定點
  # 遍歷所有點，打印出其坐標(biāo)，并圈出來
  for pt in shape.parts():
    pt_pos = (pt.x, pt.y)
    cv2.circle(img, pt_pos, 2, (0, 255, 0), 1)
  cv2.imshow("image", img)

cv2.waitKey(0)
cv2.destroyAllWindows()

# coding=utf-8
import cv2
import dlib

detector = dlib.get_frontal_face_detector() #使用默認(rèn)的人類識別器模型


def discern(img):
  gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
  dets = detector(gray, 1)
  for face in dets:
    left = face.left()
    top = face.top()
    right = face.right()
    bottom = face.bottom()
    cv2.rectangle(img, (left, top), (right, bottom), (0, 255, 0), 2)
    cv2.imshow("image", img)


cap = cv2.VideoCapture(0)
while (1):
  ret, img = cap.read()
  discern(img)
  if cv2.waitKey(1) & 0xFF == ord('q'):
    break

cap.release()
cv2.destroyAllWindows()