How to Move the Object According to Image tracking

Motive : Want to make holographic projector,so i have to make game which will track the Pad and move the four views of object accordingly.

What I did/Current Knowledge : I had placed the four camera around the object and change their viewport accordingly. Then, using Vuforia, tracked the pad(Image).
Problem : As I am beginner in Unity. I don't know how to move the object as the pad moves i.e. i don't want AR Projection on pad. but i want to use pad to move the object. You can see my progress and work i done in these images [ http://imgur.com/a/V5brG ] .
I do know how to move object using scripts, but don't know using camera. If u know how to do it or know some kind of tutorial plz let me know. Thanks