Dimitri Sarafinof wrote: > Hello, > > > > I'm working in the French National Geographic Institute on a project for > the French Ministry of Defence. The goal is to encode imagery in JPEG 2000. > > We're working with Kakadu library v6 (we've got a Commercial Enterprise > licence) and there's no option to use the components transform (in > particular ICT) when it's linked to GDAL. This option seems to be very > useful to compress RGB imagery and have better quality. It's recommended > to use it for RGB data but we can't do it with GDAL. So we would to know > if this option is going to be implemented next wit
Dimitri, Are you talking about encoding the actual image in a different color space, like YCbCr? I have no plans to implement this but I would certainly be open to incorporating a patch that does this if you could come up with one. 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 Franck, I'm talking about encoding an RGB image with a multiple component transform which is described in JPEG 2000 specification (ISO 15444-1, Annexe G.2 and G.3). This is a decorrelating transformation applied to the first three components of an image...it's not really a color space change because JPEG 2000 data are displaying in RGB. That can be made with the Kakadu binaries (option "CyccC=yes" with Kdu_compress). We've also seen that it was automatically used with ECWJP2 library but not with the JP2KAK one... Best Regards Dimitri _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
