[gdal-dev] NITF-with-JP2KAK lossless ?

[Jay Jennings]

Hi folks,
We are using a GDAL trunk snapshot from February 2011 (so 1.9dev ?) on a Windows 7 environment.  We have a Kakadu JPEG-2000 license and can successfully make NITF files with JPEG-2000 compression.  The compression appears to be the default QUALITY=20 because the files are consistently reduced in size by 80% with high quality.

But is it possible to make *lossless* JP2KAK within NITF ?   Using the GeoJP2 driver, we can do lossless using the QUALITY=100 creation option, but the same option on the NITF attempt is ignored, resulting in the same 80%-reduction-with-high-quality version.  I'm guessing this is due to the driver-within-driver issue (JP2KAK within NITF) so the NITF driver doesn't know what to do with the QUALITY=100 request.

Is there any 'gdal_translate' syntax that will currently achieve the NITF-with-JP2KAK-lossless goal ?

.........................................................
Jay Jennings
GeoEye, Inc.
(NASDAQ: GEOY)


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