Hi Frank and list, I rebuilt Gdal on a 64-bit Linux server, adding libecwj2, and it ingested GeoEye-1 NITF just fine (a bit slow though). So you are right that this warning should not really apply.
My question is then why it failed on Windows XP, at libecwj2's ncsjpcbuffer.cpp CNCSJPCBuffer(). The Jpeg2000 file is 463MB, after decompression it is 2.375 GB. Do I need to specify "large file" when building Gdal on Windows? thanks, Shawn -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Frank Warmerdam Sent: Wednesday, August 12, 2009 10:12 AM To: Gong, Shawn (Contractor) Cc: [email protected] Subject: Re: [gdal-dev] GeoEye-1 NITF - Warning 1: Image with 11 bits per sample will not be interpreted properly On Tue, Aug 11, 2009 at 12:17 PM, Gong, Shawn (Contractor)<[email protected]> wrote: > hi list, > > I found help clues to build libecwj2 on Windows. Shawn, Congrats on working though this issue! Perhaps you would like to add some notes to: http://trac.osgeo.org/gdal/wiki/ECW > However when I tried to open GeoEye-1 NITF, I got "Warning 1: Image with 11 > bits per sample will not be interpreted properly". I thought there were changes in trunk to avoid this warning when the image is jpeg2000 and being handled by a suitable codec. However, I think I only tested this specific issue when using JP2KAK for the jpeg2000 support. I'm not sure if there are problems with the ecw sdk and such files or not. However, the note about being badly corrupted should not really apply. > There are two sub-datasets in NITF (please see the gdalinfo at the end). If > I open the 2nd sub-dataset, the data show only 73 pixels and 220 lines; > digital numbers are either 0 or 255. Hmm, I don't know why it would be particularly small in size. I'm also surprised that the latest windows fwtools has problems. Perhaps you could file a ticket on the issue and I could look into it a bit next week (especially since problems can be reproduced with FWTools which I think uses JP2KAK for this purpose). Hmm, on second thought, I believe I removed JP2KAK from FWTools for licensing reasons - so perhaps it is using the ecw jpeg2000 driver too. Best regards, -- ---------------------------------------+-------------------------------- ------ I set the clouds in motion - turn up | Frank Warmerdam, [email protected] light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Programmer for Rent _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
