Find appropriate camera-projector coordinates to project contours of real objects

I am developping a game (unity3d + opencv for image processing) where i detect real-life objects from the webcam on every frame, find their edges and then draw them on the real objects. I need to find the real-world coordinates in order to place my camera and projector in a way to get edges that align with their respective objects. I looked into camera calibration which returns the camera's intrinsics, extrinsics, and lens distortion parameters but i don't know how to use them in my case or how to integrate them in unity. Is there a possible way to calculate these positions and angles?