Virtual Reality :: essays research papers

When a sound fountain is visible and auditory cues encounter with optical cues, vision always predominates oer audition. When a sound source presents no visible cues, the most important role of vision is in the monitoring of head movements. The visual field provides important feedback about the character and degree of head movement so that deliberate disturbance to the visual field causes significant disruption in the ability to localize and occult sound source. This is essential in ensuring the success of virtual reality. All the applications of the engineering of television go been dominated by entertainment. Because of this, the vast majority of televised scenes have been of familiar landscapes domestic rooms churches courtrooms and even the open prairie. In for each one case, the viewer is able to bring a vast amount of his or her experience to bear in interpreting the missing third dimension. However, as applications of television broaden to include appearances for molecu lar modeling programs for surgery for instance, the televised scenes make unfamiliar and interpretation of the depth cues become more difficult. Just as in the cinema, the human eyes persistence of vision way of life that we experience consecutive still images as a continuously silken moving image. But, despite constant development in video display technology (better colour, higher definition images etc.), all television systems present a completely flat 2-D image. Therefore, it is essential to understand various techniques used by virtual reality engineers to ensure a realistic visual stimulation. judiciousness Enhancement TechniquesMany applications of television technology, which would benefit from conventional 2-D display to three-D systems, are deprived of this transformation due to other considerations. Nature has work the lack of binocular vision in animals not equipped with both forward-facing eyes by furnishing them with a mechanism for extracting depth information fr om action parallax cues. Humans cannot do this without artificial aid and so require the helper of video depth enhancement systems like the Pulfrich Effect and Depth compound Vision (DEV). The Pulfrich Effect is named after a nineteenth century discoverer who noticed that if a neutral density stress is placed over one eye, a swinging pendulum appears to swing in an ellipse. Depending on the kick of motion, objects on a video screen also appear to discharge into the screen or advance out of the screen. This effect is due to the filter that causes the brain to process two identical retinal images at incompatible speeds, which results in motion parallax being misinterpreted by the nervous system.