[GRASS-user] sharpening an image based on multiple samples

Markus Neteler neteler at itc.it
Sat Sep 9 08:57:19 EDT 2006

On Fri, Sep 08, 2006 at 12:44:42AM +1200, Hamish wrote:
> Hi,
> .. if there are any astronomers in the house ..
> I have a series of images (all the same, slight jitter between each
> one), I'd like to use a sharpening algorithum to combine them into one
> very crisp image.
> Anyone know the trick? I guess something like i.fusion.brovey, r.series,
> or r.mapcalc magic.

You could try to smooth it with r.series, doing vertical averaging?
Or is it spatial jitter?

> Input is heavy-tripod DV of the night sky (very stable).
> thanks,
> Hamish

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