At the convergence of technology and creative invention in multimedia is virtual reality,or VR. Helmets,Goggles, special gloves and bizarre human interface attempt to place you” inside” a lifelike experience.Take a step forward and the view gets closer; turn your hand moves in front of you .Maybe the object explodes in a 90- decibel crescendo as you wrap your finger around it.Or it slips out from your grip, falls to the floor, and hurriedly escapes through a mouse hole at the bottom of the wall.
Virtual Reality require terrific computing horsepower to be realistic.In virtual Reality, your cyberspace is made up of many thousands of geometric object plotted in three- dimensional space: the more object and the more points that describe the objects, the higher the resolution and the more realistic your view, As you move about, each motion or action requires the computer to recalculate the position, angle, size, and shape of all the object that make up your view, and many thousands of computations must occur as fast as 30 times per second to seem smooth.
On the World Wide Web,standards for transmitting virtual reality world or scenes in VRML (Virtual Reality Modeling Language) documents (with the file name extension .wrl) have been developed.Intel and software makers such as Adobe have announced support for new 3-D technologies.
Using high speed dedicated computers, Multi-million-dollar flight simulators built by Singer, RediFusion, and other have led the way in commercial application of Virtual Reality .Pilots of F-16s, Boeing 777s and Rockwell space shuttles have made many simulated dry runs before doing the real thing.At the Maine Maritime Academy and other merchant marine officer training schools,computer-controlled simulators teach the intricate loading and unloading of oil tankers and container ships.
Specialized public game arcades have been built recently to offer Virtual Reality combat and flying experience for a price. For example, Battle Tech is a ten-minute interactive video encounter with hostile robots, created by Virtual World Entertainment, and located in both California and Illinois. In couches in the same area called a Containment Bay. The computer keeps score in a fast and sweaty firefight. Similar “attractions” will bring Virtual Reality to the public, particularly a youthful public, with increasing presence in the marketplace.
People who work in VR do not see themselves as part of “multimedia.” Virtual Reality deals with goggles and gloves and is still a research field where no authoring products are available, and you need a hell of a computer to develop the real-time 3-D graphics. Although there is a middle ground covered by such thing as Quick Time Virtual Reality and VRML (Virtual Reality Modeling Language) that gives multimedia developers a “window” into Virtual Reality, people often confuse multimedia and Virtual Reality and want to create futuristic environments using multimedia-authoring tools not designed for that purpose.
Virtual Reality is an extension of multimedia and it uses the basic multimedia elements of imagery,sound and animation.Because it require instrumented feedback from a wired-up person, Virtual Reality is perhaps interactive multimedia at its fullest extension.