imageio image reading and saving

import numpy as np
from imageio import imread,imsave
# 图像读取
img = imread('lena.jpg')
# print(img)
# 查看类型，尺寸
print(img.dtype,img.shape)
# 显示蓝色通道
img_tinted = img[:,:,:]*[0,0,1]

# print(img_tinted)
# 保存图像
imsave('img_tinted5.png',img_tinted)

result:

uint8 (256, 256, 3)