Can I save a numpy array as a 16-bit image using “normal” (Enthought) python?

Question

Is there any way to save a numpy array as a 16 bit image (tif, png) using any of the commonly available python packages? This is the only way that I could get to work in the

Answer 1

As mentioned, PyPNG is very useful. For Enthought users it can be installed as e.g.:

conda install -c eaton-lab pypng

I'd use the from_array method of the shelf:

import png
import numpy as np

bit_depth = 16

my_array = np.ones((800, 800, 3)) 

png.from_array(my_array*2**bit_depth-1, 'RGB;%s'%bit_depth).save('foo.png')

Mode uses PIL style format, e.g. 'L', 'LA', 'RGB' or 'RGBA', followed by ';16' or ';8' too set bit depth. If bit depth is omitted, the dtype of the array is used.

Read more here.