From: glennrp <glennrp@git.imagemagick.org>
Date: Fri, 5 Nov 2010 02:43:20 +0000 (+0000)
Subject: Added 5x5, 6x6, and 7x7 level maps for ordered-dithering.
X-Git-Tag: 7.0.1-0~8576
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=6b845767b2a94dce4942234ad78e754f81cde95d;p=imagemagick

Added 5x5, 6x6, and 7x7 level maps for ordered-dithering.
---

diff --git a/ChangeLog b/ChangeLog
index 0fa31df94..d9cb6e2c7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,6 @@
+2010-10-29  6.6.5-6 Glenn Randers-Pehrson <glennrp@image...>
+  * Added 5x5, 6x6, and 7x7 ordered-dither level maps.
+
 2010-10-30  6.6.5-5 Cristy  <quetzlzacatenango@image...>
   * Do not read configure files in the current directory for the "installed"
     version of ImageMagick.
diff --git a/config/thresholds.xml b/config/thresholds.xml
index a55bb0ad0..af3f4e792 100644
--- a/config/thresholds.xml
+++ b/config/thresholds.xml
@@ -80,7 +80,7 @@
   </threshold>
 
   <threshold map="o3x3" alias="3x3">
-    <description>Ordered 4x4 Diffused Pixel</description>
+    <description>Ordered 3x3 Diffused Pixel</description>
     <levels width="3" height="3" divisor="10">
         3  7  4
         6  1  9
@@ -102,6 +102,52 @@
     </levels>
   </threshold>
 
+  <threshold map="o5x5" alias="5x5">
+    <!--
+       Added by Glenn Randers-Pehrson, 4 Nov 2010, ImageMagick 6.6.5-6
+     -->
+    <description>Ordered 5x5 Circular</description>
+    <levels width="5" height="5" divisor="26">
+        25 21 10 11 22
+        20  9  6  7 12
+        19  5  1  2 13
+        18  8  4  3 14
+        24 17 16 15 23
+    </levels>
+  </threshold>
+
+  <threshold map="o6x6" alias="6x6">
+    <!--
+       Added by Glenn Randers-Pehrson, 4 Nov 2010, ImageMagick 6.6.5-6
+     -->
+    <description>Ordered 6x6 Circular</description>
+    <levels width="6" height="6" divisor="37">
+        36 32 23 24 25 33
+        31 15  9 10 16 26
+        22  8  2  3 11 17
+        21  7  1  4 12 18
+        30 14  6  5 13 27
+        35 29 20 19 28 34
+    </levels>
+  </threshold>
+
+  <threshold map="o7x7" alias="7x7">
+    <!--
+       Added by Glenn Randers-Pehrson, 4 Nov 2010, ImageMagick 6.6.5-6
+     -->
+    <description>Ordered 7x7 Circular</description>
+    <levels width="7" height="7" divisor="50">
+       49 42 32 18 19 33 48
+       41 31 17 10 11 20 34
+       40 30  9  2  3 12 21
+       39 29  8 21  4  5 22
+       43 28 16  7  6 13 23
+       44 38 27 15 14 24 35
+       46 45 37 26 25 36 47
+    </levels>
+  </threshold>
+
+
   <threshold map="o8x8" alias="8x8">
     <!-- Extracted from original 'OrderedDither()' Function -->
     <description>Ordered 8x8 Diffused Pixel</description>