[OSM-talk] Landsat vs OpenAerial Landsat (in JOSM)
tim
chippy2005 at gmail.com
Tue Feb 26 11:31:31 GMT 2008
I like the colouring in the i-cubed imagery, it is more natural
looking. it also looks as if it has been sharpened (have a look at the
road that runs down on the left hand side) - I think it is better for
zoomed out views.
Although for OSM use when tracing, the standard NASA landsat works better.
Tim
On Tue, Feb 26, 2008 at 11:00 AM, Christopher Schmidt
<crschmidt at metacarta.com> wrote:
> On Tue, Feb 26, 2008 at 11:28:30AM +0200, Lauri Hahne wrote:
> > I couldn't help noticing that that the Landsat images provided by
> > OpeanAerial map look muck worse than the Landsat images downloaded
> > directly from Nasa. You can see an example at
> > http://www.flickr.com/photos/97105578@N00/2293670552/sizes/o/ the
> > upper image is from OpenAerial map and the lower one from Nasa.
> >
> > I wonder if Potlatch also suffers from this.
>
> Depends entirely on where you are. Since colorizing landsat imagery is
> a choice of algorithms, those algorithms work better in some areas, and
> worse in others.
>
> In my hometown, I prefer the i-Cubed Landsat over the NASA landsat,
> though clearly that's not appropriate in the area you were looking at.
>
> Regards,
> --
> Christopher Schmidt
> MetaCarta
>
>
>
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