Python+OpenCV实现人脸检测

import numpy as np import cv2 face_patterns = cv2.CascadeClassifier('D:\python36\Lib\site-packages\cv2\data\haarcascade_frontalface_default.xml') # 从摄像头中取得视频 cap = cv2.VideoCapture(0) # 获取视频播放界面长宽

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