[GRASS-user] Exporting RGB Composite Images to GeoTIFF

[Moritz Lennert]

On 21/07/16 16:27, Markus Neteler wrote:
> Hi,
>
>
> On Thu, Jul 21, 2016 at 2:53 AM, Michele Toma
> <michele.toma at airborne.aero <mailto:michele.toma at airborne.aero>> wrote:
>
>     Hi everyone (again),____
>
>     __ __
>
>     I am having trouble exporting a composite RGB image into a GeoTIFF
>     format that I can open in Global Mapper, Photoshop, or other
>     programs. This is using Landsat 8 imagery. I am able to open the
>     composite image in QGIS, but not in Global Mapper or Photoshop. ____
>
>     __ __
>
>     Below is a list of steps that I took to get the image. I am unsure
>     of what settings to use when using r.out.gdal to export my image so
>     that it works in other programs. I am using GRASS 7.0.4.____
>
>     __ __
>
>     __1.       __Import Landsat 8 imagery____
>
>     __2.       __Convert the DN to reflectance/radiance____
>
>     __a.       __i.landsat.toar input=LC81100362016082LGN00_B
>     output=LC81100362016082LGN00_refl
>     metfile=LC81100362016082LGN00_MTL.txt____
>
>     __3.       __Perform pansharpening with i.fusion.brovey addon____
>
>     __a.       __i.fusion.brovey -l
>     ms1=LC81100362016082LGN00_refl2 at Osaka
>     ms2=LC81100362016082LGN00_refl3 at Osaka
>     ms3=LC81100362016082LGN00_refl4 at Osaka
>     pan=LC81100362016082LGN00_refl8 at Osaka output_prefix=brovey
>
>
> BTW: this method is superior (the addon can be installed with g.extension):
> https://github.com/NikosAlexandris/i.fusion.hpf

The addon is not in the addons repository, so you cannot install it with 
a simple g.extension i.fusion.hpf. In GRASS 7.2 / trunk you can install 
it with g.extension by downloading the source code and pointing the url= 
parameter of g.extension to the source code directory.

I hope that the code will be put into the addons repository, soon.

Moritz