I was reading the other day about a product that does just that.  It uses a CCD
camera that rotates around the object 360 degrees or something like that.
Think it sells for around $10k.

-Mike


> I was thinking that perhaps this idea could be extended to video. Using a
> video camera, and rotating and object around in front of it, it would seem
> possible to obtain a rough model of an object. By examining the centre line
> of the object and both edges, you could create a 3D model. It wouldn't be
> perfect and would possibly fail to recognise craters within the surface but
> would certainly be cheaper than a laser scanner! A bit of editing could fix
> up any anomalies after it has been converted to a triangle mesh or other
> format.

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