mean.py

   1 #!/usr/bin/env python3
   2
   3 import gamma
   4 import numpy
   5 import sys
   6
   7 if len(sys.argv) < 3:
   8   print(f'usage: {sys.argv[0]:s} in1.jpg ... inN.jpg out.jpg')
   9   sys.exit(1)
  10 in_jpgs = sys.argv[1:-1]
  11 out_jpg = sys.argv[-1]
  12
  13 images = []
  14 for in_jpg in in_jpgs:
  15   print('read', in_jpg)
  16   images.append(gamma.read_image(in_jpg))
  17
  18 image = numpy.mean(numpy.stack(images, 0), 0)
  19 print('write', out_jpg)
  20 gamma.write_image(out_jpg, image)