Welcome to the world of VIRTUAL REALITY G.V.Ram Mohan Reddy
AN INTRODUCTION TO VIRTUAL REALITY • The term virtual reality is an oxymoron, which was coined by JARON LANIER founder of V P L RESEARCH. • Virtual Reality is one such technology, which would make a person visualize, listen and feel other senses almost like human beings with the help of computer and a large number of technologies.
Virtual Reality is a way to humans to visualize, manipulate and interact with computers and extremely complex data.
Brief History • In 1950s, flight simulators were built by US Air Force to train student pilots. • In 1965, a research program for computer graphics called “The Ultimate Display” waslaid out. • In 1988, commercial development of VR began. • In 1991, first commercial entertainment VR system "Virtuality" was released.
Principle of ‘Learning’: I hear , I forget I see , I remember I experience , I understand VR makes us immersed in the virtual world, which seems like the real world, making us experience and thereby understand things.
Immersive virtual reality • Head-Mounted Display (HMD) • A Helmet or a face mask providing the visual and auditory displays. • Use LCD or CRT to display stereo images. • May include built-in head-tracker and stereo headphones • Non immersive virtual reality is just a television monitor or computer
By using software • Rendering: • Programming: VRML v2.0
By using hardware • Binocular Omni-Orientation Monitor (BOOM) • Head-coupled stereoscopic display device. • Uses CRT to provide high-resolution display. • Convenient to use. • Fast and accurate built-in tracking.
By mapping & stitching technologies Position tracking: • Cave Automatic Virtual Environment (CAVE) • Provides the illusion of immersion by projecting stereo images on the walls and floor of a room-sized cube. • A head tracking system continuously adjust the stereo projection to the current position of the leading viewer.
Types of VR Systems • Windows on World(WoW) • Also called Desktop VR. • Using a conventional computer monitor to display the 3D virtual world. • Immersive VR • Completely immerse the user's personal viewpoint inside the virtual 3D world. • The user has no visual contact with the physical word. • Often equipped with a Head Mounted Display (HMD).
Types of VR System(Cont’d) • Telepresence • A variation of visualizing complete computer generated worlds. • Links remote sensors in the real world with the senses of a human operator. The remote sensors might be located on a robot. Useful for performing operations in dangerous environments.
Types of VR System(Cont’d) • Mixed Reality(Augmented Reality) • The seamless merging of real space and virtual space. • Integrate the computer-generated virtual objectsinto the physical world which become in a sense an equal part of our natural environment. Distributed VR • A simulated world runs on several computers which are connected over network and the people are able to interact in real time, sharing the same virtual world.
Architecture of VR System • Input Processor, Simulation Processor, Rendering Processor and World Database. visual, auditory, haptic, touch… Position &Orientation InputProcessor RenderingProcessor SimulationProcessor World Database
Applications • Virtual reality in war strategies • Virtual reality in cockpit simulation • Virtual reality in Education & Training • Virtual reality in medical applications • Virtual reality in designing aspect • Virtual reality in web development
Virtual Reality in war strategies • Simnet is the first war related virtual reality application.
Education & Training • Driving simulators. • Flight simulators. • Ship simulators. • Tank simulators.
Virtual Reality in medical applications: • Practice performing surgery. • Perform surgery on a remote patient. • Teach new skills in a safe, controlledenvironment.
Virtual reality in designing aspects • Design of conceptual cars • Low time consuming & cheaper prototypes
Virtual reality in web development • Massive construction on-line • http:/www.bangalorebest.com/virtualcity/ index.asp • Many other Virtual City Tours are available.
Yesterday, Virtual Reality was a science fiction fantasy!!! Today it is a research topic in laboratories and amusements parks… And, Tomorrow it will certainly replace our televisions, computers!!!
Concluding…. About the only thing that does seem certain about VR is that it will grow and develop. And as the technology matures, it will become better, cheaper, and more accessible. Furthermore, the networks that link computers will expand, making it possible for VR to weave its way into our daily lives.