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keyboard interface devices. Moreover, some VR formats enable users to become immersed within synthetic computer-generated virtual environments. However, VR is not defined or limited by any one technological approach or hardware set-up.
The creation of an engaged VR user experience can be accomplished using combinations of a wide variety of interaction devices, sensory display systems, and content presented in the virtual environment. Thus, there are three common variations for how VR can be created and used.
Non-immersive VR is the most basic format and is similar to the experience of playing a modern computer or console video game. Content is delivered on a standard flat-screen computer monitor or TV with no occlusion of the outside world. Users interact with three-dimensional (3D) computer graphics variously using a gamepad, joystick, basic mouse and keyboard as well as specialized interface devices (e.g., treadmills, data gloves, and even handheld devices like the Nintendo Wii remote). Modern computer games that support user interaction and navigation within such 3D worlds, even though presented on a flat-screen display, can be technically referred to as VR environments.
Immersive VR can be produced by the integration of computers, head-mounted displays (HMDs), body-tracking sensors, specialized interface devices, and 3D graphics. These set-ups allow users to operate within a computer-generated simulated world that changes in a natural or intuitive way based on a user’s motion and interaction. An HMD is used to occlude the user’s view of the outside world, while simultaneously employing head and body-tracking technology to sense the
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