import os, sys
import fnmatch
import Image

mask = sys.argv[1]
count = 0

# Program to average a set of photos, producing merge.jpg as a result
#
# version 0.01
# Michael Warot
# 

print mask    
for file in os.listdir('.'):
    if fnmatch.fnmatch(file, mask):
        print file
        count = count + 1
        in2 = Image.open(file)
        if count == 1:
            in1 = in2
        in1 = Image.blend(in1,in2,(1.0/count))
in1.save("merge.jpg","JPEG")