[talk-ph] Cebu tracks.

D Tucny d at tucny.com
Wed Dec 31 09:05:32 GMT 2008


2008/12/31 D Tucny <d at tucny.com>

> 2008/12/31 Jim Morgan <jim at datalude.com>
>
> I don't think Yahoo is in a position to be lobbied to provide more coverage
>> at the moment, and what with Jerry Yang's departure, the future of the
>> company is looking unsure. I think we need to find another source of
>> satellite imagery which we can use, or at least reduce the dependency on
>> Yahoo.
>>
>
> Getting alternative aerial imagery would be good... but... it's expensive,
> and for larger areas and and high detail levels, very very expensive...
> Which probably explains why Yahoo doesn't have high detail coverage for the
> whole world and why nobody else has come up with a global alternative...
> OpenAerialMap, does have some coverage of some areas, but, it's a bit up in
> the air at the moment with license issues and lack of leadership that seems
> to be down to the person who started the project spreading his time a little
> thin over too many things and the fact that OpenAerialMap is never going to
> get a massive contributor base due to the difficulty in getting the imagery
> that can feed into it... Alternatively, for smaller areas, there are a
> number of people who have done things with model aircraft... Also probably
> not very cheap, or easy, but, if you're already into model aircraft,
> possibly something that could be looked into...
>

http://www.terraserver.com has some pretty decent and recent imagery, looks
like the google imagery, probably from the same provider...

Cost is $90 for a 3000x3000px image at 0.75m per pixel resolution covering
an area of about 5sqkm... But before you all rush out to buy images to
share, they specifically say that sharing or republishing the images is not
allowed and their license is a bit vague as to whether the images could be
used for tracing in OSM... I'd guess that it would be acceptable (but I'm
not a lawyer) given their wording for the OSMf to buy images and allow their
use by project members... But... It would need confirming with them whether
or not they could be used...

Some more info on aerial imagery options here...
http://wiki.openstreetmap.org/wiki/Vertical_Aerial_Photographs

d
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