Tele-Immersion is a new medium that enables a user to share a virtual space with remote participants. The user is immersed in a 3D world that is transmitted from a remote site. This medium for human interaction, enabled by digital technology, approximates the illusion that a person is in the same physical space as others, even though they may be thousands of miles distant. In a tele-immersive environment computers recognize the presence and movements of individuals and objects, track those individuals and images, and then permit them to be projected in realistic, multiple, geographically distributed immersive environments on stereo-immersive surfaces.Tele-immersion techniques can be viewed as the building blocks of the office of tomorrow, where several users from across the country will be able to collaborate as if they're all in the same room. Scaling up, transmissions could incorporate larger scenes, like news conferences, ballet performances, or sports events. With mobile rather than stationary camera arrays, viewers could establish tele-presence in remote or hazardous situations.