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On 12/27/2011 12:14 PM, Micha Silver wrote:
<blockquote cite="mid:4EF9A894.2090709@arava.co.il" type="cite">
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<style>body p { margin-bottom: 0cm; margin-top: 0pt; } </style> On
12/27/2011 10:14 AM, Peter Hopfgartner wrote:
<blockquote cite="mid:4EF97E6C.40607@r3-gis.com" type="cite">
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This seems to be, by far, the cleanest solution. I did not
realize that we already do have out oun LibTIFF.<br>
<br>
Peter<br>
<br>
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<br>
Would libtiff 4.0 include support for 12 bit jpeg? I know this is
still a bit "esoteric", not well supported. But it seems to be a
very good compression option without resorting to ecw or MrSid.
Wonder what FrankW thinks about it?<br>
Thanks,<br>
Micha<br>
<br>
</blockquote>
As far as I understand it, this is not directly related to LibTIFF,
but is a compilation option of GDAL, once that you use the internal
libjpeg. IIRC, libjpeg can be compiled for either 8 or 12 bit, but
not both. The GDAL source tree works around this, by compiling it in
both flavours.<br>
For using jpeg compression within TIFFs, you might be inetersted in
<a class="moz-txt-link-freetext" href="http://demo.geo-solutions.it/share/foss4g2011/gs_steroids_sgiannec_foss4g2011.pdf">http://demo.geo-solutions.it/share/foss4g2011/gs_steroids_sgiannec_foss4g2011.pdf</a>.<br>
<br>
Peter<br>
<blockquote cite="mid:4EF9A894.2090709@arava.co.il" type="cite">
<blockquote cite="mid:4EF97E6C.40607@r3-gis.com" type="cite"> On
12/23/2011 08:46 PM, Mathieu Baudier wrote:
<blockquote
cite="mid:CAH7BiJj2jP9fsBWoCaCuAVu=9Cz18_x3OuFZ3pxBga4Kd8rSrg@mail.gmail.com"
type="cite">
<p>ELGIS (6) already provides libtiff, so why not upgrade it
to 4.0 and rebuild everything against it?</p>
<p>Frank was never keen on the current version anyhow (as he
put again in this announcement)</p>
<div class="gmail_quote">On 23 Dec 2011 15:00, "Peter
Hopfgartner" <<a moz-do-not-send="true"
href="mailto:peter.hopfgartner@r3-gis.com">peter.hopfgartner@r3-gis.com</a>>
wrote:<br type="attribution">
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left: 1ex;">
<div text="#000000" bgcolor="#ffffff"> I do think that
this is of a certain interest to us.<br>
<br>
Should we try to include this in ELGIS? Should we craete
an libtiff4 package that can be installed in parallel to
the current package? Every package needing LibTIFF 4
must be recompiled, anyway.<br>
<br>
Peter<br>
<br>
-------- Original Message --------
<table border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<th nowrap="nowrap" valign="BASELINE"
align="RIGHT">Subject: </th>
<td>[gdal-dev] Libtiff 4.0.0 Released</td>
</tr>
<tr>
<th nowrap="nowrap" valign="BASELINE"
align="RIGHT">Date: </th>
<td>Thu, 22 Dec 2011 10:40:30 -0800</td>
</tr>
<tr>
<th nowrap="nowrap" valign="BASELINE"
align="RIGHT">From: </th>
<td>Frank Warmerdam <a moz-do-not-send="true"
href="mailto:warmerdam@pobox.com"
target="_blank"><warmerdam@pobox.com></a></td>
</tr>
<tr>
<th nowrap="nowrap" valign="BASELINE"
align="RIGHT">To: </th>
<td>GeoTIFF Mailing List <a
moz-do-not-send="true"
href="mailto:geotiff@lists.maptools.org"
target="_blank"><geotiff@lists.maptools.org></a>,
gdal dev <a moz-do-not-send="true"
href="mailto:gdal-dev@lists.osgeo.org"
target="_blank"><gdal-dev@lists.osgeo.org></a></td>
</tr>
<tr>
<th nowrap="nowrap" valign="BASELINE"
align="RIGHT">CC: </th>
<td>Bob Friesenhahn <a moz-do-not-send="true"
href="mailto:bfriesen@simple.dallas.tx.us"
target="_blank"><bfriesen@simple.dallas.tx.us></a></td>
</tr>
</tbody>
</table>
<br>
<br>
<pre>Folks,
Of interest to many GeoTIFF and GDAL users, Bob Friesenhahn
has announced:
"""
At long last, libtiff 4.0.0 is finally released. Libtiff 4.0.0 is the
successor to the libtiff 3.9.X release series. It is intended to be
largely API compatible with the 3.9.X releases, but it is definitely
not ABI compatible so any software which plans to use it will need to
be recompiled. With appropriate care, source code can easily compile
with both the 3.9.X releases and libtiff 4.0.0.
This release supports the BigTIFF TIFF format in which all offsets are
unsigned 64-bit, supporting huge files. APIs which deal with tag
offsets are necessarily updated to pass 64-bit values. I/O functions
supporting the TIFFClientOpen() interface are updated to pass 64-bit
offset values.
Please visit the libtiff page at <a moz-do-not-send="true" href="http://www.remotesensing.org/libtiff/" target="_blank">http://www.remotesensing.org/libtiff/</a>
to learn more about the release, or to download it.
""""
Note that GDAL's internal version of libtiff has tracked libtiff4 for several
years, and it is substantially preferred to using libtiff 3.9 which
lacks bigtiff
and many fixes of value to GDAL. Libgeotiff should work smoothly with
libtiff 3.9.x or libtiff 4.0.
Best regards,
--
---------------------------------------+--------------------------------------
I set the clouds in motion - turn up | Frank Warmerdam, <a moz-do-not-send="true" href="mailto:warmerdam@pobox.com" target="_blank">warmerdam@pobox.com</a>
light and sound - activate the windows | <a moz-do-not-send="true" href="http://pobox.com/%7Ewarmerdam" target="_blank">http://pobox.com/~warmerdam</a>
and watch the world go round - Rush | Geospatial Software Developer
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<br>
<div>-- <br>
Peter Hopfgartner<br>
R3 GIS<br>
<a moz-do-not-send="true" href="http://www.r3-gis.com"
target="_blank">http://www.r3-gis.com</a> </div>
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<br>
<pre class="moz-signature" cols="72">--
Dott. Peter Hopfgartner
R3 GIS Srl - GmbH
Via Johann Kravogl-Str. 2
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<br>
<div class="moz-signature">-- <br>
Peter Hopfgartner<br>
R3 GIS<br>
<a class="moz-txt-link-freetext" href="http://www.r3-gis.com">http://www.r3-gis.com</a>
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