【python】图像识别之人脸识别

1.安装opencv：

pip install opencv-python

xml文件下载：https://github.com/opencv/opencv/tree/master/data/haarcascades

2.代码

def face_detect_demo(self):

#读取

    image = cv2.imread('E://pythonprogram//data//image3.jpg')

face_cascade = cv2.CascadeClassifier(r'E://pythonprogram//data//haarcascade_frontalface_default.xml')

gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)

# 探测图片中的人脸

    faces = face_cascade.detectMultiScale(

gray,

        scaleFactor=1.15,

        minNeighbors=5,

        minSize=(5, 5),

        flags=cv2.FONT_HERSHEY_SIMPLEX

)

print("发现{0}个人脸!".format(len(faces)))

for (x, y, w, h)in faces:

cv2.rectangle(image,(x,y),(x+w,y+w),(0,255,0),2)

cv2.imshow("Find Faces!", image)

cv2.waitKey(0)

结果

输入 输出