(no commit message)

diff --git a/MagickCore/compare.c b/MagickCore/compare.c
index a3914d6e1c5c746f027c580ed101b0d1fd240e69..8b2ce8145dc728ef2f7d025e67c2edf4fe418b1d 100644 (file)
--- a/MagickCore/compare.c
+++ b/MagickCore/compare.c
@@ -833,7 +833,7 @@ static MagickBooleanType GetNormalizedCrossCorrelationDistortion(
   progress=0;
   for (i=0; i <= MaxPixelChannels; i++)
     distortion[i]=0.0;
-  area=1.0/((MagickRealType) image->columns*image->rows);
+  area=1.0/((MagickRealType) image->columns*image->rows-1);
   image_view=AcquireCacheView(image);
   reconstruct_view=AcquireCacheView(reconstruct_image);
   for (y=0; y < (ssize_t) image->rows; y++)
@@ -1493,7 +1493,7 @@ static double GetNCCDistortion(const Image *image,
   image_statistics=GetImageStatistics(image,exception);
   status=MagickTrue;
   distortion=0.0;
-  area=1.0/((MagickRealType) image->columns*image->rows);
+  area=1.0/((MagickRealType) image->columns*image->rows-1);
   image_view=AcquireCacheView(image);
   reconstruct_view=AcquireCacheView(reconstruct_image);
   for (y=0; y < (ssize_t) image->rows; y++)