Virtual Reality :: essays research papers

When a sound blood is visible and auditory cues fighting 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 record and degree of head movement so that deliberate disturbance to the visual field causes significant disruption in the ability to localize and invisible sound source. This is essential in ensuring the success of virtual reality. All the applications of the engineering of television nurture 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 from 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 demonstrates for mol ecular modeling programs for surgery for instance, the televised scenes incur unfamiliar and interpretation of the depth cues become more difficult. Just as in the cinema, the human eyes persistence of vision doer 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. knowledge 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 resolved the lack of binocular vision in animals not equipped with both forward-facing eyes by furnishing them with a mechanism for extracting depth information from trend parallax cues. Humans cannot do this without artificial aid and so require the avail of video depth enhancement systems like the Pulfrich Effect and Depth enhance Vision (DEV). The Pulfrich Effect is named after a nineteenth century watch who noticed that if a neutral density drivel is placed over one eye, a swinging pendulum appears to swing in an ellipse. Depending on the cathexis of motion, objects on a video screen also appear to withdraw 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 disparate speeds, which results in motion parallax being misinterpreted by the nervous system.