[GRASS-user] Pansharpening (how, and is it necessary?)

[Georg Kaspar]

I wonder wether pansharpening of each channel is necessary to classify a
QuickBird-Scene using i.maxlik and i.smap or wether I can just add the
pan channel to the group.
_If_ pansharpening is necessary: What is the best way to do it?
i.fusion.brovey and (i.rgb.his -> exchange intensity -> i.his.rgb) only
work with three channels, so I'd have to do this twice with different
combinations of channels!?
What about principal components? Is it possible to transform them back,
so I could exchange the first component?
Thanks!
Georg

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