Knut Arne Bjørndal wrote:
I tried i.fusion.brovey, and sharpened bands 3, 4 and 5 and
then tried ratioing based on that but the output was very different
(in a worse way) than the normal NDVI.
....
Oh, and is it possible to pan-sharpen band 6 data too?
i.fusion.brovey is just a shell script, you can edit it in a text editor
and tweak it to read whatever channel you want. also you can extract
the algorithm from it and run on your own. (see formula in the help page)
doesn't really answer your question, but maybe it helps give you an idea.
Hamish