http://fileformats.archiveteam.org/index.php?title=NIST_IHead&feed=atom&action=historyNIST IHead - Revision history2024-03-28T18:59:50ZRevision history for this page on the wikiMediaWiki 1.19.2http://fileformats.archiveteam.org/index.php?title=NIST_IHead&diff=24604&oldid=prevMarco at 15:20, 22 February 20162016-02-22T15:20:18Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Software ==</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>== Software ==</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">* [[Konvertor]]</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [[XnView]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [[XnView]]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* The NIST databases and samples may include software (C source code) to read the format used in that database. For example, [ftp://sequoyah.ncsl.nist.gov/pub/databases/data/prints4.tar.Z prints4.tar.Z] includes an ihdr2sun.c file to convert to [[Sun Raster]] format.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* The NIST databases and samples may include software (C source code) to read the format used in that database. For example, [ftp://sequoyah.ncsl.nist.gov/pub/databases/data/prints4.tar.Z prints4.tar.Z] includes an ihdr2sun.c file to convert to [[Sun Raster]] format.</div></td></tr>
</table>Marcohttp://fileformats.archiveteam.org/index.php?title=NIST_IHead&diff=24077&oldid=prevJsummers: Category:Forensics and Law Enforcement2016-01-02T20:55:40Z<p>Category:Forensics and Law Enforcement</p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.nist.gov/srd/upload/Spec-db-4-2.pdf NIST Imaging Database 4 - Fingerprint Database (NIST Special Database 4)]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.nist.gov/srd/upload/Spec-db-4-2.pdf NIST Imaging Database 4 - Fingerprint Database (NIST Special Database 4)]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.nist.gov/srd/upload/Spec-db-6.pdf NIST Imaging Database 2 - Structured Forms Database Users' Guide (NIST Special Database 6)]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.nist.gov/srd/upload/Spec-db-6.pdf NIST Imaging Database 2 - Structured Forms Database Users' Guide (NIST Special Database 6)]</div></td></tr>
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</table>Jsummershttp://fileformats.archiveteam.org/index.php?title=NIST_IHead&diff=18609&oldid=prevJsummers at 00:29, 13 August 20142014-08-13T00:29:35Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>'''NIST IHead''' format (sometimes called '''IHDR''') is a raster graphics format associated with some image databases published by NIST (National Institute of Standards and Technology). The databases are not generally available for free, but some sample files are.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>'''NIST IHead''' format (sometimes called '''IHDR''') is a raster graphics format associated with some image databases published by NIST (National Institute of Standards and Technology). The databases are not generally available for free, but some sample files are.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>IHead is not a very complex format, and it seems to be adequately <del class="diffchange diffchange-inline">documentated</del>. But it is still confusing, because every NIST database uses a different variant of it, and because everything associated with these databases seems to have multiple names.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>IHead is not a very complex format, and it seems to be adequately <ins class="diffchange diffchange-inline">documented</ins>. But it is still confusing, because every NIST database uses a different variant of it, and because everything associated with these databases seems to have multiple names.</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The image may uncompressed, or use one of many compression algorithms. Compression code 0 means uncompressed, 2 is [[CCITT Group 4]], and 6 is modified [[Lossless JPEG (original)|Lossless JPEG]].</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The image may uncompressed, or use one of many compression algorithms. Compression code 0 means uncompressed, 2 is [[CCITT Group 4]], and 6 is modified [[Lossless JPEG (original)|Lossless JPEG]].</div></td></tr>
</table>Jsummershttp://fileformats.archiveteam.org/index.php?title=NIST_IHead&diff=18608&oldid=prevJsummers: Created page with "{{FormatInfo |formattype=electronic |subcat=Graphics |extensions={{ext|pct}} |released=≤1991 }} '''NIST IHead''' format (sometimes called '''IHDR''') is a raster graphics fo..."2014-08-13T00:28:31Z<p>Created page with "{{FormatInfo |formattype=electronic |subcat=Graphics |extensions={{ext|pct}} |released=≤1991 }} '''NIST IHead''' format (sometimes called '''IHDR''') is a raster graphics fo..."</p>
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'''NIST IHead''' format (sometimes called '''IHDR''') is a raster graphics format associated with some image databases published by NIST (National Institute of Standards and Technology). The databases are not generally available for free, but some sample files are.<br />
<br />
IHead is not a very complex format, and it seems to be adequately documentated. But it is still confusing, because every NIST database uses a different variant of it, and because everything associated with these databases seems to have multiple names.<br />
<br />
The image may uncompressed, or use one of many compression algorithms. Compression code 0 means uncompressed, 2 is [[CCITT Group 4]], and 6 is modified [[Lossless JPEG (original)|Lossless JPEG]].<br />
<br />
== Identification ==<br />
Some or all files begin with ASCII "<code>288</code>", followed by five <code>0x00</code> bytes. This is a decimal representation of the header size.<br />
<br />
== Software ==<br />
* [[XnView]]<br />
* The NIST databases and samples may include software (C source code) to read the format used in that database. For example, [ftp://sequoyah.ncsl.nist.gov/pub/databases/data/prints4.tar.Z prints4.tar.Z] includes an ihdr2sun.c file to convert to [[Sun Raster]] format.<br />
<br />
== Sample files ==<br />
* Some of the files at ftp://sequoyah.ncsl.nist.gov/pub/databases/data/, such as [ftp://sequoyah.ncsl.nist.gov/pub/databases/data/prints4.tar.Z prints4.tar.Z]<br />
<br />
== Links ==<br />
* [http://www.nist.gov/srd/nistsd4.cfm NIST Special Database 4]<br />
** [ftp://sequoyah.ncsl.nist.gov/pub/databases/data/prints4.txt prints4.txt] - Information about NIST Special Database 4 - Fingerprint Samples<br />
* [http://www.nist.gov/srd/nistsd14.cfm NIST Special Database 14]<br />
** [ftp://sequoyah.ncsl.nist.gov/pub/databases/data/prints14.txt prints14.txt] - Information about Image Samples from NIST Special Database 14<br />
* [http://www.nist.gov/srd/upload/nistsp2.pdf NIST Imaging Database 2 - Structured Forms Database Users' Guide (NIST Special Database 2)], §2.2: Image File Format<br />
* [http://www.nist.gov/srd/upload/Spec-db-4-2.pdf NIST Imaging Database 4 - Fingerprint Database (NIST Special Database 4)]<br />
* [http://www.nist.gov/srd/upload/Spec-db-6.pdf NIST Imaging Database 2 - Structured Forms Database Users' Guide (NIST Special Database 6)]</div>Jsummers