Saving a Numpy array as an image (instructions)

Question

I found my answer in a previous post: Saving a Numpy array as an image. The only problem being, there isn\'t much instruction on using the PyPNG module.

There are only

Answer 1

You might be better off using PIL:

from PIL import Image
import numpy as np

data = np.random.random((100,100))

#Rescale to 0-255 and convert to uint8
rescaled = (255.0 / data.max() * (data - data.min())).astype(np.uint8)

im = Image.fromarray(rescaled)
im.save('test.png')

Answer 2

import matplotlib.pyplot as plt
import numpy as np
plt.imshow(np.random.random(100, 100))
plt.savefig('')

Answer 3

It would be best to use scipy for it.

from scipy.misc import imsave
# x is the array you want to save 
imsave("image.png", x)

Full documentation is here: https://docs.scipy.org/doc/scipy-0.14.0/reference/generated/scipy.misc.imsave.html