如何縮小合影中人臉檢測的矩形框？

Question

import cv2
import face_recognition as fc

image = fc.load_image_file('classA.jpg')
image = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)

face_locations = fc.face_locations(image)

print(face_locations)

for i in range(len(face_locations)):
    image = cv2.rectangle(image, (face_locations[i][3],face_locations[i][0],face_locations[i][1],face_locations[i][2]),(0,255,0),2)

cv2.imshow(' Students present in class detected',image)
cv2.waitKey(0)

我期待檢測到的臉應該只有一個矩形框而不是整個身體

Answer 1

你需要一個左上角和一個右下角。 像：

top_left = (face_locations[i][3], face_locations[i][0])
bottom_right = (face_locations[i][1], face_locations[i][2])
image = cv2.rectangle(image, top_left, bottom_right, (0,255,0), 2)

希望對你有效。