Minimal Dither and Non-Dither Threshold Maps
-->
<threshold map="threshold" alias="1x1">
- <description>Threshold Non-Dither</description>
+ <description>Threshold 1x1 (non-dither)</description>
<levels width="1" height="1" divisor="2">
1
</levels>
</threshold>
<threshold map="checks" alias="2x1">
- <description>Checkerboard Dither</description>
+ <description>Checkerboard 2x1 (dither)</description>
<levels width="2" height="2" divisor="3">
1 2
2 1
</threshold>
<!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- Dispersed Pixel Ordered Dither Patterns
+ (dispersed) Ordered Dither Patterns
-->
<threshold map="o2x2" alias="2x2">
- <description>Ordered 2x2 Dispersed Pixel</description>
+ <description>Ordered 2x2 (dispersed)</description>
<levels width="2" height="2" divisor="5">
1 3
4 2
</threshold>
<threshold map="o3x3" alias="3x3">
- <description>Ordered 3x3 Dispersed Pixel</description>
+ <description>Ordered 3x3 (dispersed)</description>
<levels width="3" height="3" divisor="10">
3 7 4
6 1 9
From "Dithering Algorithms"
http://www.efg2.com/Lab/Library/ImageProcessing/DHALF.TXT
-->
- <description>Ordered 4x4 Dispersed Pixel</description>
+ <description>Ordered 4x4 (dispersed)</description>
<levels width="4" height="4" divisor="17">
1 9 3 11
13 5 15 7
<!--
Added by Glenn Randers-Pehrson, 4 Nov 2010, ImageMagick 6.6.5-6
-->
- <description>Ordered 5x5 Black Circles</description>
+ <description>Ordered 5x5 (black circles)</description>
<levels width="5" height="5" divisor="26">
1 21 16 15 4
5 17 20 19 14
<!--
Added by Glenn Randers-Pehrson, 4 Nov 2010, ImageMagick 6.6.5-6
-->
- <description>Ordered 5x5 White Circles</description>
+ <description>Ordered 5x5 (white circles)</description>
<levels width="5" height="5" divisor="26">
25 21 10 11 22
20 9 6 7 12
<!--
Added by Glenn Randers-Pehrson, 4 Nov 2010, ImageMagick 6.6.5-6
-->
- <description>Ordered 6x6 Black Circles</description>
+ <description>Ordered 6x6 (black circles)</description>
<levels width="6" height="6" divisor="37">
1 5 14 13 12 4
6 22 28 27 21 11
<!--
Added by Glenn Randers-Pehrson, 4 Nov 2010, ImageMagick 6.6.5-6
-->
- <description>Ordered 6x6 White Circles</description>
+ <description>Ordered 6x6 (white circles)</description>
<levels width="6" height="6" divisor="37">
36 32 23 24 25 33
31 15 9 10 16 26
<!--
Added by Glenn Randers-Pehrson, 4 Nov 2010, ImageMagick 6.6.5-6
-->
- <description>Ordered 7x7 Black Circles</description>
+ <description>Ordered 7x7 (black circles)</description>
<levels width="7" height="7" divisor="50">
2 7 17 26 15 6 1
8 16 33 39 32 13 5
<!--
Added by Glenn Randers-Pehrson, 4 Nov 2010, ImageMagick 6.6.5-6
-->
- <description>Ordered 7x7 White Circles</description>
+ <description>Ordered 7x7 (white circles)</description>
<levels width="7" height="7" divisor="50">
49 42 32 18 19 33 48
41 31 17 10 11 20 34
<threshold map="o8x8" alias="8x8">
<!-- Extracted from original 'OrderedDither()' Function -->
- <description>Ordered 8x8 Dispersed Pixel</description>
+ <description>Ordered 8x8 (dispersed)</description>
<levels width="8" height="8" divisor="65">
1 49 13 61 4 52 16 64
33 17 45 29 36 20 48 32