不改变图像大小，改变图片的存储大小

import cv2

from PIL import Image as ImagePIL
from PIL import Image

#im = ImagePIL.open('1.jpeg')


im = cv2.imread('1.jpeg')
image = Image.fromarray(cv2.cvtColor(im,cv2.COLOR_BGR2RGB))
image.save('2.jpeg',quality=10,dpi=(24.0,24.0))