From: Cristy <urban-warrior@imagemagick.org>
Date: Thu, 29 Nov 2018 19:16:09 +0000 (-0500)
Subject: ...
X-Git-Tag: 7.0.8-15~16
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=31d3d7cbf0da7d3d4a00593547af39ebecd5f57e;p=imagemagick

...
---

diff --git a/MagickCore/enhance.c b/MagickCore/enhance.c
index 58006516e..56407b9c4 100644
--- a/MagickCore/enhance.c
+++ b/MagickCore/enhance.c
@@ -652,8 +652,8 @@ MagickExport MagickBooleanType CLAHEImage(Image *image,const size_t x_tiles,
     1 : x_tiles);
   tile.y=(ssize_t) (y_tiles < 2 ? 2 : y_tiles >= MaxCLAHETiles ? MaxCLAHETiles-
     1 : y_tiles);
-  width=((image->columns+tile.x/2)/tile.x)*tile.x;
-  height=((image->rows+tile.y/2)/tile.y)*tile.y;
+  width=((image->columns+tile.x/2+1)/tile.x)*tile.x;
+  height=((image->rows+tile.y/2+1)/tile.y)*tile.y;
   pixel_cache=AcquireVirtualMemory(width,height*sizeof(*pixels));
   if (pixel_cache == (MemoryInfo *) NULL)
     ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",