Hi,
OpenJPEG is open source and it works quite nice with tiled JPEG2000 images.
Inspire images are such as well as NITF images so they are not uncommon at all.
As a free alternative it would be fine. I am not sure how easy it would be to
use from Java, on all platforms.
-Jukka-
________________________________
Michaël Michaud wrote:
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><mailto:m.michael.mich...@orange.fr>
Lähetetty: 1. lokakuuta 2016 23:19
Vastaanottaja:
jump-pilot-devel@lists.sourceforge.net<mailto: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><mailto: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
- 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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