[HOT] OSM: DigitalGlobe

Julio Costa Zambelli julio.costa at openstreetmap.cl
Wed Mar 16 18:00:32 GMT 2011


Here is the map of the movement in different regions of Japan:


Julio Costa Zambelli
OpenStreetMap Chile

julio.costa at openstreetmap.cl

Cel: +56(9)89981083
Postal: Casilla 9002, Correo 3, Viña del Mar, Chile

On 16 March 2011 06:21, Jean-Guilhem Cailton <jgc at arkemie.com> wrote:

> Hi Martin,
> I've checked DigitalGlobe imagery with GPS tracks in one town
> (Kesennuma) and it seemed fairly well aligned (better than existing
> data, like a river import, for example).
> Also the coastline may have changed very recently. Japan is supposed to
> have moved globally by 2.4 m. The shore itself has lowered by 75 cm in
> Fukushima and Iwate Prefectures. And, beside this, I've seen discussion
> about its quality in OSM. So I would not rely too much on it for
> referencing imagery.
> In the alternative you propose, my guess is that "the existing data is
> pretty inaccurate" (rather than "the images are misplaced in many
> different ways"). :)
> Bing coverage for Japan is described by links in the wiki. It now even
> includes post-disaster images (sometimes from Digital Globe, and faster
> to get than through Digital Globe WMS).
> Best,
> Jean-Guilhem
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