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		<id>http://fileformats.archiveteam.org/index.php?action=history&amp;feed=atom&amp;title=Img_Software_Set</id>
		<title>Img Software Set - Revision history</title>
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		<updated>2026-05-15T21:06:08Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>http://fileformats.archiveteam.org/index.php?title=Img_Software_Set&amp;diff=50420&amp;oldid=prev</id>
		<title>Sembiance: /* Software */</title>
		<link rel="alternate" type="text/html" href="http://fileformats.archiveteam.org/index.php?title=Img_Software_Set&amp;diff=50420&amp;oldid=prev"/>
				<updated>2025-06-08T08:42:07Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Software&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class='diff diff-contentalign-left'&gt;
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				&lt;col class='diff-content' /&gt;
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			&lt;tr valign='top'&gt;
			&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;← Older revision&lt;/td&gt;
			&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;Revision as of 08:42, 8 June 2025&lt;/td&gt;
			&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 22:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 22:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;== Software ==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;== Software ==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* [[Netpbm]]: imgtoppm&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* [[Netpbm]]: imgtoppm&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* [&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;http&lt;/del&gt;://&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;ftp&lt;/del&gt;.x.org/R5contrib/img_1.3.tar.Z Img Software Set, Version 1.3]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* [&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;https&lt;/ins&gt;://&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;discmaster&lt;/ins&gt;.&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;textfiles.com/browse/29292/2014.06.x.org.tar/&lt;/ins&gt;x.org/R5contrib/img_1.3.tar.Z Img Software Set, Version 1.3]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* [https://stuff.mit.edu/afs/athena/project/visual/phils/src/img/img_1.2.tar.Z Img Software Set, Version 1.2]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* [https://stuff.mit.edu/afs/athena/project/visual/phils/src/img/img_1.2.tar.Z Img Software Set, Version 1.2]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Multi-file formats]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[[Category:Multi-file formats]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Sembiance</name></author>	</entry>

	<entry>
		<id>http://fileformats.archiveteam.org/index.php?title=Img_Software_Set&amp;diff=25579&amp;oldid=prev</id>
		<title>Jsummers: Category:Multi-file formats</title>
		<link rel="alternate" type="text/html" href="http://fileformats.archiveteam.org/index.php?title=Img_Software_Set&amp;diff=25579&amp;oldid=prev"/>
				<updated>2016-05-04T15:34:26Z</updated>
		
		<summary type="html">&lt;p&gt;Category:Multi-file formats&lt;/p&gt;
&lt;table class='diff diff-contentalign-left'&gt;
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				&lt;col class='diff-content' /&gt;
			&lt;tr valign='top'&gt;
			&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;← Older revision&lt;/td&gt;
			&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;Revision as of 15:34, 4 May 2016&lt;/td&gt;
			&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 24:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 24:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* [http://ftp.x.org/R5contrib/img_1.3.tar.Z Img Software Set, Version 1.3]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* [http://ftp.x.org/R5contrib/img_1.3.tar.Z Img Software Set, Version 1.3]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* [https://stuff.mit.edu/afs/athena/project/visual/phils/src/img/img_1.2.tar.Z Img Software Set, Version 1.2]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;* [https://stuff.mit.edu/afs/athena/project/visual/phils/src/img/img_1.2.tar.Z Img Software Set, Version 1.2]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;[[Category:Multi-file formats]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Jsummers</name></author>	</entry>

	<entry>
		<id>http://fileformats.archiveteam.org/index.php?title=Img_Software_Set&amp;diff=24060&amp;oldid=prev</id>
		<title>Jsummers: Created page with &quot;{{FormatInfo |formattype=electronic |subcat=Graphics |extensions={{ext|p}}, {{ext|a}}, {{ext|r}}, {{ext|g}}, {{ext|b}} |released=≤1989 }} '''Img Software Set''' is an image ...&quot;</title>
		<link rel="alternate" type="text/html" href="http://fileformats.archiveteam.org/index.php?title=Img_Software_Set&amp;diff=24060&amp;oldid=prev"/>
				<updated>2016-01-02T17:25:00Z</updated>
		
		<summary type="html">&lt;p&gt;Created page with &amp;quot;{{FormatInfo |formattype=electronic |subcat=Graphics |extensions={{ext|p}}, {{ext|a}}, {{ext|r}}, {{ext|g}}, {{ext|b}} |released=≤1989 }} &amp;#039;&amp;#039;&amp;#039;Img Software Set&amp;#039;&amp;#039;&amp;#039; is an image ...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{{FormatInfo&lt;br /&gt;
|formattype=electronic&lt;br /&gt;
|subcat=Graphics&lt;br /&gt;
|extensions={{ext|p}}, {{ext|a}}, {{ext|r}}, {{ext|g}}, {{ext|b}}&lt;br /&gt;
|released=≤1989&lt;br /&gt;
}}&lt;br /&gt;
'''Img Software Set''' is an image processing toolkit developed by Paul Raveling. It has a native image format, which often uses multiple files per image.&lt;br /&gt;
&lt;br /&gt;
* '''.p''': Colormapped image&lt;br /&gt;
* '''.a''': Image attributes&lt;br /&gt;
* '''.r''', '''.g''', '''.b''': Red, green, blue components&lt;br /&gt;
&lt;br /&gt;
Image files may be [[compress|compressed]], and have an extra '''.Z''' extension.&lt;br /&gt;
&lt;br /&gt;
It seems that this software, or an earlier manifestation of it, was also called the '''Img-whatnot toolkit'''. We have not been able to confirm or explain this name.&lt;br /&gt;
&lt;br /&gt;
== Identification ==&lt;br /&gt;
At least some files begin with ASCII &amp;quot;{{magic|SCMI}}&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
Files contain segments tagged with &amp;quot;&amp;lt;code&amp;gt;AT&amp;lt;/code&amp;gt;&amp;quot;, &amp;quot;&amp;lt;code&amp;gt;CM&amp;lt;/code&amp;gt;&amp;quot;, and &amp;quot;&amp;lt;code&amp;gt;PD&amp;lt;/code&amp;gt;&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
== Software ==&lt;br /&gt;
* [[Netpbm]]: imgtoppm&lt;br /&gt;
* [http://ftp.x.org/R5contrib/img_1.3.tar.Z Img Software Set, Version 1.3]&lt;br /&gt;
* [https://stuff.mit.edu/afs/athena/project/visual/phils/src/img/img_1.2.tar.Z Img Software Set, Version 1.2]&lt;/div&gt;</summary>
		<author><name>Jsummers</name></author>	</entry>

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