Rename rmsdiff to rmsDiffPil

algorithms/distance/rms_diff.py

@@ -3,7 +3,7 @@ import math
 import operator
 import functools
 
-def rmsdiff(im1, im2):
+def rmsDiffPil(im1, im2):
     "Calculate the root-mean-square difference between two images"
 
     h = ImageChops.difference(im1, im2).histogram()
@@ -12,3 +12,4 @@ def rmsdiff(im1, im2):
     return math.sqrt(functools.reduce(operator.add,
         map(lambda h, i: h*(i**2), h, range(256))
     ) / (float(im1.size[0]) * im1.size[1]))
+