😏:Face Landmark

import cv2
import dlib

# 얼굴 검출기와 랜드마크 검출기 생성 --- ①
detector = dlib.get_frontal_face_detector()
predictor = dlib.shape_predictor('./shape_predictor_68_face_landmarks.dat')

img = cv2.imread("../img/man_face.jpg")
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
# 얼굴 영역 검출 --- ②
faces = detector(gray)
for rect in faces:
    # 얼굴 영역을 좌표로 변환 후 사각형 표시 --- ③
    x,y = rect.left(), rect.top()
    w,h = rect.right()-x, rect.bottom()-y
    cv2.rectangle(img, (x, y), (x + w, y + h), (0, 255, 0), 1)

    # 얼굴 랜드마크 검출 --- ④
    shape = predictor(gray, rect)
    for i in range(68):
        # 부위별 좌표 추출 및 표시 --- ⑤
        part = shape.part(i)
        cv2.circle(img, (part.x, part.y), 2, (0, 0, 255), -1)
        cv2.putText(img, str(i), (part.x, part.y), cv2.FONT_HERSHEY_PLAIN, \
                                         0.5,(255,255,255), 1, cv2.LINE_AA)

cv2.imshow("face landmark", img)
cv2.waitKey(0)