VIRTUAL REALITY

VIRTUAL REALITY Virtual reality (VR) is a term that applies to computer-simulated environments that can simulate places in the real world as well as in imaginary worlds. Most current virtual reality environments are primarily visual experiences, displayed either on a computer screen or through special stereoscopic displays, but some simulations include additional sensory information, such as sound through speakers or headphones. In practice, it is currently very difficult to create a high-fidelity virtual reality experience, due largely to technical limitations on processing power , image resolution and communication bandwidth. However, those limitations are expected to eventually be overcome as processor, imaging and data communication technologies become more powerful and cost-effective over time. Virtual Reality is often used to describe a wide variety of applications commonly associated with immersive, highly visual, 3D environments: HOW VR WORKS? Based on data entered by programmers, computers create virtual environments by generating three-dimensional images. Users usually view these images through a head-mounted device, which can be a helmet, goggles, or other apparatus that restricts their vision to two small video monitors, one in front of each eyea true VR experience, but in general it should include:
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Three-dimensional images that appear to be life-sized from the perspective of the user The ability to track a user's motions, particularly his head and eye movements, and correspondingly adjust the images on the user's display to reflect the change in perspective.

APPLICATION See Mail send to u in authorshare ppt also«««««.. 1. Weather Simulation TriVis accepts data from meteorological services such as satellite data, statistically corrected forecast data, precipitation data and fronts information. It then analyzes this data and uses fractal functions to create projections of storm systems. Using TriVis to visualize artificial clouds, meteorologists can predict weather with increased accuracy. 2.Architecture . This virtual reality program has applications in the area of architecture and light engineering.With light simulation architects can examine how outdoor light will fall inside and outside their building before it is built. If the lighting needs to be redesigned, the architect can redesign the building on the computer and examine the new outdoor light effects.In addition to outdoor light, lighting engineers use virtual reality to examine the effects of point lights, spotlights and other indoor light sources. An interior designer could examine how light will affect different room arrangements.

3.MEDICINE During a simulated operation the system provides vocal and visual feedback to the user, and warns the surgeon when a dangerous action is about to take place. In addition to training, the expert assistant can be used during the actual operation to provide feedback and guidance. This is very useful when the surgeon's awareness of the situation is limited due to complex anatomy. 4. Chemistry Real Mol is a program that uses virtual reality to show molecular models in an interactive, immersive environment. The scientist who uses the program wears a cyberglove and a head mounted display to interact with the molecular system. Using RealMol scientists can move molecules or protein chains to create new molecules. This is useful in fields such as drug design. PPT«««. 5.ENTERTAINMENT 6.TRAINING 7.MODELLING DESIGNING AND PLANNING