Hi,
It sounds like your problem is that you don't have a vi that can reognise whatever you are trying to detect. You will need to write this yourself. I'm afraid there is no magic solution that will solve your specific problem. There are lots of vi's such as 'IMAQ Count Objects' and 'IMAQ Find Circular Edge' that you can use. the rest is jsut analysing the numbers really but you need a reasonable knowledge of labview. How much experience of labview have you got?
In order to get your vision system up and running I would start off with something easy to detect like a dark block on a light background. You may have to look through some tutorials to get an idea of how to do it. If you want to find 3 dimensions it will be difficult as I think you will need to use 2 cameras or move the camera between 2 different locations. I expect you will know the z co-ordinate already. Is the object on a conveyor or table / floor? If so, the z co-ordinate will obviously be constant. I would work with 2 dimensions and maybe add a third if you have time.
If you send some images of the object you want to use to find the co-ordinates I may be able to give you an idea of how to get them. My example is of a laser spot, so it is easy for the labview software to find the centre of it as it contrasts well with the background. You need to make sure you get as much contrast as possible between the object and the background. Make sure the object is in good focus as blurred edges will make things harder.
Hope this helps.
Dan
