hi pD community!

I just started to experiment with pD and I'm amazed! I'm currently trying to build a drum sequencer with a webcam and I wondered if I could do the tracking using pD instead of Processing.

So here's my situation: I have a white board, filmed by a webcam with a variable amount of black objects on it which can be moved around by the user. Is there a way to track the position (X/Y coordinates) of each object?

I know that you can determine the center of one or more objects using BLOB, but I need the coordinates of the center of many objects! Any idea on how to do this? Is it even possible? And how many objects can you track at the same time?

Thanks in advance!