3 cameras tracking x/y position of a 'blob' - can a 3d position be inferred?

vvvv beta question
1

Can anyone point me towards a way of doing this, or a name for what the technique would be called?

If 3 cams can see the same object, presumably there is a way to work out the 3d position, once calibrated.

I’m sure this is a job for open cv, but I’m having trouble finding anything. I think this example is a lot more simple than many of the other open cv tracking aproaches

2

way over my head

3

2 cameras should be enough to allow you to get the 3d position

Like the Wikipedia page says: in theory it’s trivial but in practise it might be a bit more involved to get a good result.

Depending on the size/view of the blob from the different cameras I’d guess the calculated position will easily be a bit noisy.