Fixed checking ReadMask.

diff --git a/MagickCore/effect.c b/MagickCore/effect.c
index 697cf8b6bf35e74134e2d258652719cdbd08ab42..2608e976da76389e871b214884ffe631b47a2fc1 100644 (file)
--- a/MagickCore/effect.c
+++ b/MagickCore/effect.c
@@ -3423,7 +3423,7 @@ MagickExport Image *UnsharpMaskImage(const Image *image,const double radius,
             (unsharp_traits == UndefinedPixelTrait))
           continue;
         if (((unsharp_traits & CopyPixelTrait) != 0) ||
-            (GetPixelReadMask(image,p) != 0))
+            (GetPixelReadMask(image,p) == 0))
           {
             SetPixelChannel(unsharp_image,channel,p[i],q);
             continue;