High-dimensional image representation

from PIL import Image
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
import numpy as np

im = Image.open('banana.jpg').resize((64,64)).transpose(Image.FLIP_TOP_BOTTOM)
nim = np.asarray(im)
z = np.asarray(im.convert('L'))*1.

fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
x, y = np.meshgrid(range(nim.shape[0]), range(nim.shape[1]))
colors = nim/255.
colors = colors.reshape((colors.shape[0]*colors.shape[1],3))
ax.scatter(x.ravel(), y.ravel(), z.ravel(),
    marker='.',facecolors=colors,edgecolors=colors)
plt.show()