is it possible just to use camera tracking and just put a big green plane on the person and track its movement?
your going to have to be more specific. I can’t understand what your question is.
I think, you need a special markers on green space, and somehow mask the aktor in traking time.
Green screen is typically used to wipe out the background, fill it in with some thing else. Is that what you are doing?
it’s definitely possible, but you need to have markers on the greenscreen. look at these examples to get an idea of that: http://www.hollywoodcamerawork.us/greenscreenplates.html