Jan Hartmann <j.l.h.hartmann <at> uva.nl> writes: > > > Hi Peter, > You can get a compress-ratio to about 10% of the original size > with the GDAL option -co COMPRESS=JKEG -co PHOTOMETRIC=YCBCR. > Perhaps even more for you sort of data. Of course that compression > is lossy, so for archival purposes it is useless. For viewers, you > won't note the difference and it is quite fast, especially if you > use gdaladdo with the option --config COMPRESS_OVERVIEW JPEG > --config PHOTOMETRIC_OVERVIEW YCBCR
We can't forecast the speed without knowing which viewer is used. They do not all include GDAL. GDAL based viewer should have been fast already with the COMPRESS=DEFLATE image at least with close zoom. Pyramid layers or reduced resolution layers or overviews or how one wants to call them are very good to have but that also depends on the viewer. -Jukka Rahkonen- _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
