1. A system, comprising: a first three-dimensional (3D) collaboration system comprising: a first display configured to project a stereo 3D scene; and a first processing subsystem configured to: receive processed captured images of a first subject and a viewpoint of a second user of a first graphics object from a second 3D collaboration system; render the processed captured images of the first subject and the first graphics object in the stereo 3D scene; and capture a 3D scene from a viewpoint of a virtual camera, wherein the viewpoint of the virtual camera is based on a position of a user input device associated with the first 3D collaboration system; one or more first tracking sensors configured to track a six degree of freedom viewpoint of a first user associated with the first 3D collaboration system, wherein the first processing subsystem is configured to adjust a projection of the rendered processed captured images of the first subject and the first graphics object such that the projection substantially matches a viewpoint of the first user; and wherein the first processing subsystem is further configured to provide the viewpoint of the first user, the captured 3D scene, and a captured image of the first user to the second 3D collaboration system, wherein the second 3D collaboration system is configured to: display the captured image of the first user and the first graphics object from the viewpoint of the first user substantially concurrent to the first 3D collaboration system displaying the first graphics object from the viewpoint of the first user in a first portion of a display; and display the captured 3D scene in a second portion of the display.