Virtual reality uses technology to create simulated environments that users can interact with through headsets, gloves and other devices. It has applications in fields like medicine for surgical simulation and rehabilitation. After starting in the 1960s, VR has advanced with improvements in tracking, displays and immersion. The future holds potential for VR to replace computers and websites through fully immersive virtual worlds.

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VIRTUAL REALITY
BEYOND IMAGINATION………..

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WHAT IS VIRTUAL REALITY?
• The Virtual Reality is a technology that
produces a Virtual world so that a user can
interact and manipulate with the virtual
objects in the so produced Virtual Worlds.

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HISTORY
1965-The beginnings of VR.
1977-Interaction through body movement
1982-The first computer- generated movie
1983-First virtual environment
1987-Development of immersive VR
1993-Invention of surgery rehearsal system.
2000- First demonstration of "tele-immersion” in which people
at different location tend to appear physically

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IMMERSIVE VIRTUAL REALITY
 An immersive Virtual Reality adds special gadgets like
Head mounted displays and Boom.
 Stereo scopic viewing adds enhanced features like deep
peeping through the Virtual world.
 Eliminating the real world and placing the human in a
computer generated world is one of the enhancements.
 The convincing factor about IVR is the
auditory, haptic, touch and other non-visual senses.
 Interactions with the objects in the Virtual world are
controlled by a data glove, head mounted display and
other gadgets.

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HEAD MOUNTED DISPLAY
 Consists of two miniature display screens that produces the stereo scopic
images and an optical position tracking system
 It tracks the orientation of the humans head in the Virtual world and that
produces the impulse to the image generating large projection Areas to get
more immersive feeling.
 Characteristics: walk through, look around, fly through in the 3d Virtual world
Computer.
 As a result the user can see in the direction that he wants and he can walk
through the Virtual world.

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BOOM :
 To over come the intrusiveness with the HMD the Boom and
Cave are used.
 Screens and stereo scopic image generating apparatus are fixed
in a box, which is attached to a multi link arm.
 The user peeps into the Virtual world through two holes, and
controls his motions with the arms.

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 The Cave is an interesting topic in IVR.
 A cave consists of a cube shaped room.
The stereo scopic images are projected on to the walls
and the floor of the room with the help of a number of
projectors.
The head tracking system worn by the leading user
controls the view of the Virtual world.
Several users may sit on the Virtual world at a time.
CAVE :

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MEDICAL APPLICATION :
 Medical applications for virtual reality (VR) are just beginning to emerge.
 These include VR surgical simulators, telepresence surgery, complex
medical database visualization, and rehabilitation.
 The Green Telepresence Surgery System consists of two components,
the surgical workstation and remote worksite.
 At the remote site there is a 3-D camera system and responsive
manipulators with sensory input.
 At the workstation there is a 3-D monitor and dexterous handles with
force feedback.
 The VR surgical simulator is a stylized recreation of the human abdomen
with several essential organs.
 Database visualization creates 3-D images of complex medical data for
new perspectives in analysis.
 And to support these advanced technologies, the operating room and
hospital of the future will be first designed and tested in virtual reality,
bringing together the full power of the digital physician.

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 Using a helmet mounted display and DataGloveTM, a person can
learn anatomy from a new perspective by flying inside and around the
organs, or can practice surgical procedures with a scalpel and
clamps.
Simulation of Organs

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FUTURE OF VIRTUAL REALITY
Yesterday Virtual Reality was a science fiction
fantasy. Today it is a research topic in
laboratories and amusement parks. Tomorrow it
will certainly replace our televisions and
computers. Many researches are trying to find
more and more applications of Virtual Reality.
In the forth coming days the web sites
developed using Virtual Reality will replace the
entire present web industry.

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CONCLUSION:
The ability of Virtual Reality to produce realistic worlds of data,
objects, with which the users can interact and manipulate in a
realistic and an intuitive manner, opens up a vast wealth of
possibilities for work-related applications.
The concept of Virtual Reality provides an innovative mix of
entertainment, education and State-of-Art.
The Concept of Cyberspace will provide a new kind of travel
into virtual worlds where one can swim with the dolphins and
experience intense sensory stimulation.
Working in many fields like medicine, rocket launching,
massive constructions, designing and modeling, war training and
cockpit training, it is very important to be more precise and
accurate and here Virtual Reality provides a solution.
The Real World and the Virtual World together will help in
Revolutionary Inventions in the Future .

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REFERENCES:
[1] http://blue-c.ethz.ch
[2] M. Gross, S. Würmlin, M. Naef, E. Lamboray, C.
Spagno, A. Kunz, E. Koller Meier,T. Svoboda, L. Van Gool, S.
Lang, K.Strehlke, A. Vande Moere, and O. Staadt: “blue-c: A
Spatially Immersive Display and 3D Video Portal for
Telepresence”. In Proceedings of ACM SIGGRAPH 2003, pp.
819-827, 2003.
[3] S. Lang, M. Naef, M. Gross, L. Hovestadt: “IN: SHOP:
Using telepresence and immersive VR for a new shopping
experience”. In Proceedings of
Vision, Modeling, Visualization 2003, 2003. In Print.
[4] http://www.chiplace.org/chifringe/2004/655.pdf.
[5] http://www.activeworlds.com/