Pil Converting From I;16 To Jpeg Produce White Image

I am having a problem converting an image I;16 to JPEG with PIL. My original image can be found here (as pickle). The original image comes from a DICOM file. Here is the code to tr

Solution 1:

Your values are 16-bit and need to be reduced to 8-bit for display. You can scale them from their current range of 2,712 (i.e. ims.min()) to 4,328 (i.e. ims.max()) with the following:

from PIL import Image
import numpy as np
import pickle

# Load image
ims = pickle.load(open("pixel_array.pickle", "rb"))

# Normalise to range 0..255
norm = (ims.astype(np.float)-ims.min())*255.0 / (ims.max()-ims.min())

# Save as 8-bit PNG
Image.fromarray(norm.astype(np.uint8)).save('result.png')