[HOT] OrbView-3 1 m image available near Homs, Syria
dodobas at geoinfo.geof.hr
Tue Jan 17 07:43:15 GMT 2012
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On 17.01.2012 08:32, Jean-Guilhem Cailton wrote:
> An OrbView-3 satellite image, from GeoEye, among those recently
> released to the public domain by USGS, panchromatic (black and
> white) with a 1 m resolution, is available. It covers an area south
> west of Homs, part of which is not covered by high resolution Bing.
> It is cloudless.
> It was georeferenced using GPS tracks where available, and
> existing OSM data elsewhere (which itself had apparently been
> traced from Bing). (Before this, it had an apparent offset of about
> 80 m).
i've been trying to do something similar with USGS for Croatia. So, it
seems that OrbView-3 imagery is not orthorectified. I've tried using
GDAL and ASTER dem which resulted in 20-30m offset. However, this was
tested only on a single image.
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