how to resize and save an 16-bits numpy array to Image using PIL

To resize and save a 16-bits numpy array as an image using PIL, follow these steps:

1. Import the required libraries:

import numpy as np
from PIL import Image

2. Create a numpy array with 16-bit values:

arr = np.random.randint(0, 2**16-1, size=(512, 512), dtype=np.uint16)

3. Convert the numpy array to a PIL image:

img = Image.fromarray(arr)

4. Resize the image to the desired size:

img_resized = img.resize((256, 256))

5. Save the resized image:

img_resized.save('resized_image.png')

Note: when saving the image, make sure to choose a file format that supports 16-bit images, such as PNG or TIFF.