[GRASS-dev] Re: i.rgb.his/i.his.rgb and 16bit images
hamish_b at yahoo.com
Thu Oct 1 13:38:06 EDT 2009
[16bit quickbird images + i.rgb2his, i.his2rgb]
> > see attached patch x6.5, I'm not quite sure if the approach is
> > right though so haven't applied it.
Georg Kaspar wrote:
> thanks for the effort. i compiled the module with the
> applied patch, but the output is still encoded in 8 bit.
> can'ts see why though...
Very sorry if this is a dumb question, but did you set n_levels=
to 65535? (it defaults to 8bit)
Does 'i.rgb2his --help' show the option?
what does 'r.info -r' say about the 3 r,g,b bands?
really that option name is misleading, it should be max_level=255
or n_levels=256 or bitdepth=8. I think to go with bitdepth= with
8,16 as the only options. Anyone know if 32bit or other bits
satellite/imagery data exist?
set colors with:
r.colors band.red color=rules
note that i.his2rgb has not been modified; experimenting with
do you know of any free-for-download QB data for testing it
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