Converting 2D Numpy array of grayscale values to a PIL image

Question

Say I have a 2D Numpy array of values on the range 0 to 1, which represents a grayscale image. How do I then convert this into a PIL Image object? All attempts so far have

Answer 1

If I understood you question, you want to get a grayscale image using PIL.

If this is the case, you do not need to multiply each pixels by 255.

The following worked for me

import numpy as np
from PIL import Image

# Creates a random image 100*100 pixels
mat = np.random.random((100,100))

# Creates PIL image
img = Image.fromarray(mat, 'L')
img.show()