import cv2

''' 基于图片的识别人脸'''
#加载分类器
face_cascade = cv2.CascadeClassifier('haarcascades/haarcascade_frontalface_default.xml')
eye_cascade = cv2.CascadeClassifier('haarcascades/haarcascade_eye.xml')

img = cv2.imread('C:\\Users\\ding\\Desktop\\1.jpg')
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)

#得到face一个list,list包含x,y,height,width
faces = face_cascade.detectMultiScale(gray, 1.3, 5)
# img = cv2.rectangle(img, (0, 0), (10, 10), (255, 0, 0), 2)

for (x, y, w, h) in faces:
    #画矩形
    img = cv2.rectangle(img, (x, y), (x + w, y + h), (255, 0, 0), 2)
    roi_gray = gray[y:y + h, x:x + w]
    roi_color = img[y:y + h, x:x + w]
    eyes = eye_cascade.detectMultiScale(roi_gray)

    # for (ex, ey, ew, eh) in eyes:
    #     cv2.rectangle(roi_color, (ex, ey), (ex + ew, ey + eh), (0, 255, 0), 2)
#窗口名称，以及宽、高度
cv2.namedWindow("img", 0);
cv2.resizeWindow("img", 700, 700);
cv2.imshow('img', img)
cv2.waitKey(0)
cv2.destroyAllWindows()