From: dirk <dirk@git.imagemagick.org>
Date: Tue, 6 Jan 2015 22:24:27 +0000 (+0000)
Subject: Fixed off by one bug in AdaptiveThresholdImage.
X-Git-Tag: 7.0.1-0~1486
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=a608e0ac47949160708bb527cf6cfdb36d91497e;p=imagemagick

Fixed off by one bug in AdaptiveThresholdImage.
---

diff --git a/MagickCore/threshold.c b/MagickCore/threshold.c
index 7a8b6f395..788e33ee6 100644
--- a/MagickCore/threshold.c
+++ b/MagickCore/threshold.c
@@ -321,7 +321,7 @@ MagickExport Image *AdaptiveThresholdImage(const Image *image,
           channel_bias[channel]+=pixels[i];
           pixels+=(width-1)*GetPixelChannels(image);
           channel_sum[channel]+=pixels[i];
-          pixels+=GetPixelChannels(image)*image->columns;
+          pixels+=GetPixelChannels(image)*(image->columns+1);
         }
         mean=(double) (channel_sum[channel]/number_pixels+bias);
         SetPixelChannel(threshold_image,channel,(Quantum) ((double)