Virtual Reality Virtual reality, is a computer-generated, multi-sensory human interface to computers. Virtual reality extends beyond the capability of typical workstation graphics in two ways. First, through the use of tracking sensors, the computer knows precisely the location and angle of the user's head, which enables the graphics scene to be generated in the correct perspective for each eye. Second, because a very wide-angle image is provided, which is updated 10 to 60 times a second and is often augmented with synthesized surround sound, motion, and even scent, a level of immersion in the simulated scene is achieved. Immersion, combined with correct perspective, allows the development of facile methods for navigation in three dimensions. (Gump) Scene complexity is determined by the computer system's capability to display a great number of shaded, lighted, textured, and occluded poly....

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