[PD] [OT] Using a webcam to measure a wheel's rotation speed

[Matteo Sisti Sette]

On 09/02/2010 06:52 PM, Thomas Grill wrote:
> Hi Matteo,
> can't you mark one of the spokes or the wheel and setup the camera in a distance so that a blob tracker can cope with it?
> Then, it's fairly easy to measure something like the zero-crossing rate along one dimension x or y.

That would definitely work much better, but in my setup i don't think it 
will be possible to have the whole wheel visible from the camera at a 
distance without objects or people in between.

Thank you for the suggestion
m.