On Thu, May 22, 2008 at 11:25 AM, Rahkonen Jukka
[EMAIL PROTECTED] wrote:
Hello,
We have thousands of aerial photos archived in JPEG2000 format, Kakudu
license and great interest in seeing the WMS performance obtained directly
from jpeg2000. Until now we have not been satisfied with the speed, so we
need to expand the archived images back to tiff format, create overviews
etc. It feels lunatic because we do know that Kakadu and a few other
commercial JPEG2000 utilities can handle our images extremely fast.
Kakadu *can* be fast, depends on how you compress your jp2 images :-)
(but you know that already :-) ).
My experience with GDAL Kakadu driver is that, it is fast but not as
fast as I would expect it to be. Daniele and I have developed an
imageio plugin which directly uses kakadu JNI withouth using gdal.
Unfortunately it was not meant to be used, however we are playing
right now with jp2 boxes to expose the geojp2 box in order to parse
georeferencing in it. Unfortunately we are not targeting gmlinjpeg2000
in the immediate future.
However help and/or additional funding would change this :-).
Unfortunately it is impossible for me to test ImageIO-EXT GDAL even if the
instructions are fine. I am mostly tied to use ready made binaries.
We can't ship binaries for ECW and/or kakadu but we can help people
make the binaries. Whoever interested in testing ecw and/or kakadu can
contact us directly.
But if
you are going to make speed tests at your house some day I could send you
the Kakadu creation options we are using for JPEG2000 compression.
That would be nice. Part of the work on the gdal kakadu driver was to
allow more creation options!
Most of this were not available on gdal 1.4.4 but it seems that on
gdal 1.5 they have been ported. We will move to it after release 1.0
for imageio-ext and at that point we'll check the differences.
If you are interested we have a nice internal document describing all
the options available.
Options
yield lossless JPEG2000 images which are rather well optimized for
interactive browsing both locally and remotely through JPIP server.
We cannot do any JPIP OS due to NDA that we signed :-|
Ciao,
Simone.
- Show quoted text -
Regards,
-Jukka Rahkonen-
Lähettäjä: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Puolesta Daniele
Romagnoli
Lähetetty: 22. toukokuuta 2008 11:42
Vastaanottaja: geotools-gt2-users@lists.sourceforge.net; Geotools-Devel
list; [EMAIL PROTECTED];
[EMAIL PROTECTED]; Simone Giannecchini
Aihe: Re: [Geoserver-users] Progress on ImageIO-EXT GDAL GeoTools plugin+
GeoServer
Ops sorry... Missing copy-and-pasted links. (Starting hating Windows Vista
:P)
Repeating mail with links.
Hi lists,
With this email we report some progresses on our work on ImageIO-EXT GDAL
geotools plugin. Main details are available at the wiki page: [1].
Briefly,
this module allows to extend the GeoTools coverage data access capabilities
by leveraging on the powerful GDAL Libraries via the ImageIO-EXT project.
GeoServer will directly benefit of these improvements. You can test an
unofficial GeoServer release we have produced to test the new capabilities.
It is available at [2] as a zipped war file.
Requested extensions to be added to that GeoServer release are available at
[3]. A readme file available in this ZIP file contains instructions about
how to add extensions and where to find needed GDAL DLLs/SOs. Note that due
to licensing issues, the available dynamic libraries enable support for
MrSID, JP2K (MrSID), DTED, Erdas Imagine, NITF formats.
If you need to add support to JP2K (Kakadu) and ECW, see instructions
available at [4] (OpenOffice) or [5] (PDF), sections GDAL Requirements and
GDAL Configurations for further information on enabling ECW and Kakadu
support on GDAL. For further helps on this topic, ask questions.
Regards,
GeoSolutions
---
[1]: http://docs.codehaus.org/display/GEOTOOLS/ImageIO-EXT+GDAL
[2]: http://www.geo-solutions.it/libraries/geoserver-1.7.0-SNAPSHOT-war.zip
[3]:
http://www.geo-solutions.it/libraries/geoserver-1.7.0-SNAPSHOT-imageio-ext-gdal-plugin.zip
[4]: http://www.geo-solutions.it/doc/ImageioExt-SetupGuide.odt
[5]: http://www.geo-solutions.it/doc/ImageioExt-SetupGuide.pdf
-
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---
Eng. Simone Giannecchini
President /CEO GeoSolutions S.A.S.
Via Carignoni 51
55041
