[OSM-talk] GeoEye Haiti imagery Ok'd

[Simone Cortesi]

On Fri, Jan 15, 2010 at 17:27, Andy Allan <gravitystorm at gmail.com> wrote:

> The imagery isn't rectified using ground control points obtained via
> GPS units, if that's what you're asking, so no, it's not going to be
> 100% accurate. I'm not certain what was used to rectify it, but I
> suspect either Yahoo imagery or OSM data itself.
>
> If you find an area where all the OSM data is off by a fixed amount,
> then don't worry about moving the data, move the imagery instead. And
> don't worry about it overly much, since anyone on the ground with a
> GPS unit will be able to cope with a 5-10m displacement.

have a look here:
http://www.openstreetmap.org/edit?lat=18.542645&lon=-72.337311&zoom=18&tileurl=http://maps.nypl.org/tilecache/1/haiti/!/!/!.png
(the 2 circles in the center of the image)

or here: http://www.openstreetmap.org/edit?lat=18.546683&lon=-72.349488&zoom=18
(coastline)

-- 
-S