[Openstreetmap] Areal photos for free?

[Andy Armstrong]

On 18 Feb 2005, at 16:38, Andy Armstrong wrote:
> The parallax error due to not knowing exactly which direction the 
> camera is potentially huge compared with any error due to the relative 
> position of the GPS and the camera. It's also a /really big job/ to 
> photograph the whole country from a light aircraft - or even any 
> significant area. In addition aren't there huge no-fly zones for light 
> aircraft? Significantly they'd be over cities.

A better approach might be not to worry too much about the absolute 
position and orientation of the camera and just take loads of pictures 
then work out where they are by correlating them with some ground based 
surveying.

-- 
Andy Armstrong, hexten.net