[ELGIS] Fwd: [gdal-dev] Libtiff 4.0.0 Released

Tue Dec 27 08:36:39 EST 2011

On 12/27/2011 12:14 PM, Micha Silver wrote:
> On 12/27/2011 10:14 AM, Peter Hopfgartner wrote:
>> This seems to be, by far, the cleanest solution. I did not realize 
>> that we already do have out oun LibTIFF.
>>
>> Peter
>>
>
> 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?
> Thanks,
> Micha
>
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.
For using jpeg compression within TIFFs, you might be inetersted in 
http://demo.geo-solutions.it/share/foss4g2011/gs_steroids_sgiannec_foss4g2011.pdf.

Peter
>> On 12/23/2011 08:46 PM, Mathieu Baudier wrote:
>>>
>>> ELGIS (6) already provides libtiff, so why not upgrade it to 4.0 and 
>>> rebuild everything against it?
>>>
>>> Frank was never keen on the current version anyhow (as he put again 
>>> in this announcement)
>>>
>>> On 23 Dec 2011 15:00, "Peter Hopfgartner" 
>>> <peter.hopfgartner at r3-gis.com <mailto:peter.hopfgartner at r3-gis.com>> 
>>> wrote:
>>>
>>>     I do think that this is of a certain interest to us.
>>>
>>>     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.
>>>
>>>     Peter
>>>
>>>     -------- Original Message --------
>>>     Subject: 	[gdal-dev] Libtiff 4.0.0 Released
>>>     Date: 	Thu, 22 Dec 2011 10:40:30 -0800
>>>     From: 	Frank Warmerdam <warmerdam at pobox.com>
>>>     <mailto:warmerdam at pobox.com>
>>>     To: 	GeoTIFF Mailing List <geotiff at lists.maptools.org>
>>>     <mailto:geotiff at lists.maptools.org>, gdal dev
>>>     <gdal-dev at lists.osgeo.org> <mailto:gdal-dev at lists.osgeo.org>
>>>     CC: 	Bob Friesenhahn <bfriesen at simple.dallas.tx.us>
>>>     <mailto:bfriesen at simple.dallas.tx.us>
>>>
>>>
>>>
>>>     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 athttp://www.remotesensing.org/libtiff/
>>>     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,warmerdam at pobox.com  <mailto:warmerdam at pobox.com>
>>>     light and sound - activate the windows |http://pobox.com/~warmerdam  <http://pobox.com/%7Ewarmerdam>
>>>     and watch the world go round - Rush    | Geospatial Software Developer
>>>     _______________________________________________
>>>     gdal-dev mailing list
>>>     gdal-dev at lists.osgeo.org  <mailto:gdal-dev at lists.osgeo.org>
>>>     http://lists.osgeo.org/mailman/listinfo/gdal-dev
>>>
>>>
>>>     -- 
>>>     Peter Hopfgartner
>>>     R3 GIS
>>>     http://www.r3-gis.com
>>>
>>>     _______________________________________________
>>>     el mailing list
>>>     el at lists.osgeo.org <mailto:el at lists.osgeo.org>
>>>     http://lists.osgeo.org/mailman/listinfo/el
>>>
>>
>>
>> -- 
>> Dott. Peter Hopfgartner
>> R3 GIS Srl - GmbH
>> Via Johann Kravogl-Str. 2
>> I-39012 Meran/Merano (BZ)
>> web  :www.r3-gis.com
>> mail :peter.hopfgartner at r3-gis.com
>> phone: +39 0473 494949
>> fax  : +39 0473 069902
>>
>> ATTENZIONE! Le informazioni contenute nella presente e-mail e nei documenti eventualmente allegati sono confidenziali. La loro diffusione, distribuzione e/o riproduzione da parte di terzi, senza autorizzazione del mittente è vietata e può violare il D. Lgs. 196/2003. In caso di ricezione per errore, Vogliate immediatamente informare il mittente del messaggio e distruggere la e-mail.
>> ACHTUNG! Die in dieser Nachricht oder in den beigelegten Dokumenten beinhalteten Informationen sind streng vertraulich. Ihre Verbreitung und/oder ihre Wiedergabe durch Dritte ist ohne Erlaubnis des Absenders verboten und verstößt gegen das Legislativdekret 196/2003. Sollten Sie diese Mitteilung irrtümlicherweise erhalten haben, bitten wir Sie uns umgehend zu informieren und anschließend die Mitteilung zu vernichten.
>> WARNING! This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorised copying, disclosure or distribution of the material in this e-mail is strictly forbidden and could be against the law (D. Lgs. 196/2003)
>>
>>
>> This mail was received via Mail-SeCure System.
>>
>>
>> _______________________________________________
>> el mailing list
>> el at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/el
>>
>> This mail was received via Mail-SeCure System.
>>
>>
>
>


-- 
Peter Hopfgartner
R3 GIS
http://www.r3-gis.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/el/attachments/20111227/bd973cc3/attachment.html