Virtual reality is a computer-generated simulation that can be interacted with physically. It has been an idea since the 1950s but gained popularity in the 1980s and 90s. There are three types of VR systems - non-immersive desktop systems, semi-immersive projection systems, and fully immersive head-mounted display systems. VR has applications in architecture, military, and healthcare. However, it is limited by high costs and space requirements for equipment such as head-mounted displays.

1. VIRTUAL REALITY
BY PATEL BHAVIN
(12CE095)

2. What is virtual reality?
A computer generated simulation of 3-D image or environment
that can be interacted with a physical or real way by a person.

3. History of VR
 In 1950 an attempt by a cinematographer by Morton Heilig to simulate different senses
became the idea.
 During the 1980s and 90s, Virtual Reality became a concept that was been believed to be
the future.

4. Types of virtual reality
Non-Immersive (Desktop) Systems: Non-immersive systems, as the name suggests, are the least
immersive implementation of VR techniques. Using the desktop system, the virtual environment(VE) is
viewed through a portal or window by utilising a monitor.
Semi-Immersive Projection Systems: Semi-immersive systems are a relatively new implementation of
VR technology. A semi-immersive system will comprise a relatively high performance graphics
computing system which can be coupled with either a large screen projector system , multiple television
projection systems.
Fully Immersive Systems: All fully immersive systems will give a sense of presence that cannot be
equaled by the other approaches discussed earlier, but the sense of immersion depends on several
parameters including the field of view of resolution, the update rate, and contrast and illumination of
the display.

5. components
REALITY ENGINE : Reality engines are based largely on the same
components that make up a personal computer (PC), although much more computing
power is required for the reality engine than is available in a standard PC. Virtual reality
images are made with tiny dot like segments of a picture known as pixels, or picture
elements.

6. components
HEAD MOUNTED DISPLAY (HMD): Head-
mounted display (HMD) units use a small screen or screens that are
worn in a helmet or a pair glasses. Unlike a movie, the HMD allows
viewers to look at an image from various angles or change their field
of view by simply moving their heads.

7. components
AUDIO UNITS: The audio portion of
virtual reality is transmitted through small
speakers placed over each ear.

8. components
GLOVES: Gloves in virtual reality
allow the user to interact with the virtual
world.

9. Application
Architecture: An area in which virtual reality has tremendous
potential is in architectural design.
allow designers and clients to examine homes and office buildings,
inside and out, before they're built. With virtual reality, designers can
interactively test a building before construction begins.

10. Application
Military

11. Application
Medical: Healthcare is one of the biggest adopters
of virtual reality which encompasses surgery simulation,
robotic surgery and skills training.
One of the advantages of this technology is that it allows
healthcare professionals to learn new skills.

12. Drawbacks
Cost: This new technology is expensive. The cost of developing
hardware and software for the application of virtual reality
technology is too high.
Currently the prize of HMD is $350 .
Space: This equipment requires a large amount of space to
accommodate.