import numpy as np
import skimage
from skimage import io,data
# read data
with open('test.txt') as f:
    lines=f.read()
data=lines.splitlines()
R_MEAN=122.67891434
G_MEAN=116.66876762
B_MEAN=104.00698793
WIDTH=227
HEIGHT=227
a=np.asarray(data)
a.resize([3,WIDTH,HEIGHT])
# add mean value
mean=np.concatenate((np.full((WIDTH,HEIGHT),B_MEAN),np.full((WIDTH,HEIGHT),G_MEAN),np.full((WIDTH,HEIGHT),R_MEAN)),axis=0)
mean.resize([3,WIDTH,HEIGHT])
a=a.astype(np.float64)
pic=a+mean
# change the channel from [3,WIDTH,HEIGHT] to [WIDTH,HEIGHT,3]
picWHC = pic.swapaxes(0, 1).swapaxes(1,2)
# change the bgr to rgb
picRGB=picWHC[:, :, (2, 1, 0)]
picRGB=picRGB/255
picRGB=np.clip(picRGB,0,1)
# show and save picture
io.imsave('test.jpg',picRGB)