opencv-python获取图像尺寸、大小

import cv2
import numpy as np
fn="22.jpg"
if __name__ == '__main__':
    print('load %s as ...' % fn)
    img = cv2.imread(fn)
    sp = img.shape
    print sp
    sz1 = sp[0]#height(rows) of image
    sz2 = sp[1]#width(colums) of image
    sz3 = sp[2]#the pixels value is made up of three primary colors
    print ('width: %d \nheight: %d \nnumber: %d' %(sz1,sz2,sz3))

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