デモ
nbviewer
http://nbviewer.jupyter.org/gist/Tatejimaru/9272c82e2d85a7498901
方法
ここではmatplotlibのimshow
関数を使います。
from PIL import Image
import matplotlib.pyplot as plt
import numpy as np
im = Image.open("hoge.png", "r")
plt.imshow(np.array(im))
参考
python - How to show PIL Image in ipython notebook - Stack Overflow
http://stackoverflow.com/questions/26649716/how-to-show-pil-image-in-ipython-notebook