python生成一段利用dlib读取摄像头进行人脸识别的代码

以下是一段利用dlib读取摄像头进行人脸识别的Python代码：

import dlib
import cv2

detector = dlib.get_frontal_face_detector()
predictor = dlib.shape_predictor("shape_predictor_68_face_landmarks.dat")

cap = cv2.VideoCapture(0)

while True:
    ret, frame = cap.read()
    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
    faces = detector(gray)

    for face in faces:
        x1, y1 = face.left(), face.top()
        x2, y2 = face.right(), face.bottom()
        landmarks = predictor(gray, face)

        for n in range(0, 68):
            x = landmarks.part(n).x
            y = landmarks.part(n).y
            cv2.circle(frame, (x, y), 2, (0, 255, 0), -1)

        cv2.rectangle(frame, (x1, y1), (x2, y2), (0, 255, 0), 3)

    cv2.imshow("Frame", frame)

    key = cv2.waitKey(1)
    if key == 27:
        break

cap.release()
cv2.destroyAllWindows()

希望对您有所帮助。