Tri-Color Narrow Band RGB DSLR scanning

[Chromium VI]

Darktable has a builtin de-Bayering option. If activated (under the demosaic menu) a 4x larger image will result.

 

[loccdor]

It would be relatively trivial for a programmer with an image processing package to be able to combine the R G B of 3 images. I had Gemini write one real quick for Python.

from PIL import Image
import os

def combine_channels():
# Define filenames
r_path = 'red.tif'
g_path = 'green.tif'
b_path = 'blue.tif'
output_path = 'rgb.tif'

# Check if all files exist to avoid errors
for file in [r_path, g_path, b_path]:
if not os.path.exists(file):
print(f"Error: Could not find {file} in the current folder.")
return

try:
# Open the source images and convert to grayscale (L mode)
# just in case they aren't already formatted correctly
r = Image.open(r_path).convert('L')
g = Image.open(g_path).convert('L')
b = Image.open(b_path).convert('L')

# Merge the three images into one RGB image
rgb_image = Image.merge('RGB', (r, g, b))

# Save the result
rgb_image.save(output_path)
print(f"Success! Saved combined image as {output_path}")

except Exception as e:
print(f"An error occurred: {e}")

if __name__ == "__main__":
combine_channels()

 

[brbo]

As far as I know, Grain2Pixel plugin has support for separate R G B scans.