From: cristy <urban-warrior@git.imagemagick.org>
Date: Fri, 4 Apr 2014 19:16:53 +0000 (+0000)
Subject: (no commit message)
X-Git-Tag: 7.0.1-0~2505
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=85636be3606cecd98570d1f9f692d90316be2d9d;p=imagemagick

---

diff --git a/coders/pcx.c b/coders/pcx.c
index f688128d3..b7d5e80dd 100644
--- a/coders/pcx.c
+++ b/coders/pcx.c
@@ -1089,9 +1089,6 @@ static MagickBooleanType WritePCXImage(const ImageInfo *image_info,Image *image,
           }
         else
           {
-            Quantum
-              polarity;
-
             register unsigned char
               bit,
               byte;
@@ -1099,11 +1096,6 @@ static MagickBooleanType WritePCXImage(const ImageInfo *image_info,Image *image,
             /*
               Convert PseudoClass image to a PCX monochrome image.
             */
-            polarity=(Quantum) (GetPixelInfoIntensity(
-              &image->colormap[0]) < (QuantumRange/2) ? 1 : 0);
-            if (image->colors == 2)
-              polarity=(Quantum) (GetPixelInfoIntensity(&image->colormap[0]) <
-                GetPixelInfoIntensity(&image->colormap[1]) ? 1 : 0);
             for (y=0; y < (ssize_t) image->rows; y++)
             {
               p=GetVirtualPixels(image,0,y,image->columns,1,exception);
@@ -1115,7 +1107,7 @@ static MagickBooleanType WritePCXImage(const ImageInfo *image_info,Image *image,
               for (x=0; x < (ssize_t) image->columns; x++)
               {
                 byte<<=1;
-                if (GetPixelIndex(image,p) == polarity)
+                if (GetPixelLuma(image,p) >= (QuantumRange/2.0))
                   byte|=0x01;
                 bit++;
                 if (bit == 8)
diff --git a/tests/validate.h b/tests/validate.h
index 2d6783776..890d718aa 100644
--- a/tests/validate.h
+++ b/tests/validate.h
@@ -102,6 +102,7 @@ static const char
     "-black-threshold 20%",
     "-blur 0x0.5",
     "-border 6x6",
+    "-canny 0x1+10%+80%",
     "-charcoal 0x1",
     "-chop 8x6+20+30",
     "-colors 16",