import matplotlib
import numpy as np

photo=plt.imread('Feynman.png')
plt.figure
plt.subplot(121)
plt.imshow(photo)
photo*=255
plt.subplot(122)
plt.imshow(photo)

• Plot results in:
  • Clipping input data to the valid range for imshow with RGB data ([0..1] for floats or [0..255] for integers). and only displays an image in the first subplot

• Used image

CodePudding user response：

• The issue is photo*=255 is still an array of floats.
  • Look at the photo array.
  • Add photo = photo.astype(int) after photo*=255.
  • X in