[OSM-talk] Mapping and surveying long road tunnels

[Andy Allan]

On 3/22/07, Simon Hewison <simon at zymurgy.org> wrote:
> Raphaël Jacquot wrote:
> > or, we could use IMUs and some kalmann filtering
>
> or video surveying. Marking key points on video frames from twin video
> cameras (stereo vision) with the same focal length will get you a distance
> of point on edge of tunnel from point of view. Couple with a distance
> measurement from wheel counter and you have a quite clever system.
>
> This is partly what those geospatialvision and the amazon mechanical turk
> slaves do.

Wire-guided missiles, with a record of time vs control inputs. The
first missile to make it out the other end is the control input log
we're most interested in.

:-)

Andy