Hi
Thanks for clarification.
Do you think that OpenJPEG would be a good alternative to ER-Mapper one
for OpenJUMP ?
Just curious as this is not my area of expertise.
Michaël
Le 02/10/2016 à 13:43, Rahkonen Jukka (MML) a écrit :
Hi,
There are millions different ways to organize the JPEG2000 code stream
when it is written and that affects the reading side as well.
Most important for OpenJPEG is that it must load a whole tile before
it can process it. More clever drivers can handle tile parts by
utilizing a systems called "precincts" but for OpenJPEG any bigger
images should be written as tiled. Your sample images are written with
Kakadu 6.4 SDK and with only one big tile. The option to use with
Kakadu is Stiles. Tiled JPEG2000 is also required for Inspire
compliant images. GDAL OpenJPEG driver has a special Inspire profile
for writing Inspire compliant output.
-Jukka Rahkonen-
------------------------------------------------------------------------
*Lähettäjä:* Michaël Michaud <m.michael.mich...@orange.fr>
*Lähetetty:* 1. lokakuuta 2016 23:19
*Vastaanottaja:* jump-pilot-devel@lists.sourceforge.net
*Aihe:* Re: [JPP-Devel] jp2 driver
Hi Jukka,
Thanks for the reminder.
I remembered ecw was usable on 32bits jvm only, but I did not remember
for jp2000.
What do you mean by OpenJPEG is good but the JPEG2000 file must have
suitable "creation time" settings.
Michaël
Le 01/10/2016 à 19:20, Rahkonen Jukka (MML) a écrit :
Hi,
Without really testing, I guess that those images would work great
through ECW/JP2 driver and binaries. This comment is in
lib\native\ecw,jp2_support.txt.
"ECW/JP2 support is realized via native libraries compiled from the
ECW SDK 3.3 .
As these have to be compiled for every platform the support is limited to
platforms where the libraries are available.
Currently included in OJ PLUS is support for the following combinations
Linux (32bit/64bit) with Java (32bit/64bit)
MacOSX with Java (32bit)
Windows (XP - 8.1 [32bit/64bit]) with Java (32bit)
NOTE: 64bit Java is currently _not_ supported on MacOSX and Windows."
Generally, ECW/JPEG2000 by a company ER-Mapper/ERDAS/Hexagon, Kakadu
by Kakadusoftware and MrSID/JPEG2000 by Lizardtech are good, non-free
drivers. OpenJPEG is good too in the recent version but the JPEG2000
file must have suitable creation time settings. Jasper driver is
useless, and OpenJPEG can eat memory if big JPEG2000 is written as
one tile.
If you can get the native ECW/JP2 to work in your system you should
be happy.
-Jukka Rahkonen-
------------------------------------------------------------------------
*Lähettäjä:* Giuseppe Aruta <giuseppe.ar...@gmail.com>
*Lähetetty:* 1. lokakuuta 2016 19:13
*Vastaanottaja:* OpenJump develop and use
*Aihe:* Re: [JPP-Devel] jp2 driver
Note that I added Jp2 reader to rasterImageLayer framework.
I tried with it too. The problems are the same and regarding 974, it
runs out of memory (java.lang.OutOfMemoryError: Java heap space)
2016-10-01 18:09 GMT+02:00 Giuseppe Aruta <giuseppe.ar...@gmail.com
<mailto:giuseppe.ar...@gmail.com>>:
Hi Michael,
I did the tests on your files and had the same output. OJ uses
JAI to read jp2, eventually gdal if libs are installed into
"native" folder.
I've never tried gdal: it might works as QGIS uses it
Peppe
2016-10-01 10:41 GMT+02:00 Michaël Michaud
<m.michael.mich...@orange.fr <mailto:m.michael.mich...@orange.fr>>:
Hi jumpers,
I've problems with image driver which does not read jp2 files
correctly
I put some images here :
https://www.dropbox.com/sh/02kbw1biy6els4c/AADEcYAkuq6XW5czz00ONj1La?dl=0
<https://www.dropbox.com/sh/02kbw1biy6els4c/AADEcYAkuq6XW5czz00ONj1La?dl=0>
- Image "test" found on the cloud is read correctly by OpenJUMP0
- Image 44* are read by OpenJUMP but with a very poor
resolution (and
without referencing). It is read correctly by QGis
- Image 974* freeze the application (QGis can read it)
What are your experience with jp2 ? Someone to investigate ?
Michaël
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