读取

python
import cv2
import numpy as np 
img = cv2.imdecode(np.fromfile("./人物-1.jpg", dtype=np.uint8), 1) # img是矩阵

写入：

python
import cv2
cv2.imencode('.jpg', img)[1].tofile(os.path.join(self.keyword, self.keyword + str(count) + ".jpg"))