title: Export normilized image without reconverting?
body: <p>I have the following code to normilize pixel values of an image in the range 0-1.</p>
  <pre><code># Import
  simpsons = Image.open(&quot;simps.png&quot;)
  simpsons_pixels = np.asarray(simpsons)
  
  # Normalize
  simpsons_pixels = simpsons_pixels.astype('float32')
  simpsons_pixels /= 255.0
  
  # Denormalize
  simpsons_pixels *= 255
  simpsons_pixels = simpsons_pixels.astype('uint8')
  
  # Export
  simpsons_before = Image.fromarray(simpsons_pixels, 'L')
  simpsons_before.save(&quot;simpsons_before.png&quot;)
  </code></pre>
  <p>Is it possible to export an image without having to change its values back to the range 0-255 and/or converting it back to int?</p>