Integers can overflow

An illustration of overflow problem arising when working with integers

Python source code: plot_camera_uint.py

import matplotlib.pyplot as plt
from skimage import data

camera = data.camera()
camera_multiply = 3 * camera

plt.figure(figsize=(8, 4))
plt.subplot(121)
plt.imshow(camera, cmap='gray', interpolation='nearest')
plt.axis('off')
plt.subplot(122)
plt.imshow(camera_multiply, cmap='gray', interpolation='nearest')
plt.axis('off')

plt.tight_layout()
plt.show()