This document provides an overview of virtual reality (VR), including its history, types, applications, advantages, disadvantages, and future. VR creates 3D, computer-generated environments that can simulate visual, auditory, and sometimes tactile experiences. The history of VR is traced back to the 1950s and 1960s with early innovators experimenting with surround sound and stereoscopic displays. Modern VR uses head-mounted displays, motion tracking, and graphics accelerators to immerse users in simulated worlds. Potential applications of VR include entertainment, medicine, manufacturing, education and training. Advantages are its ability to visualize concepts and train for dangerous situations safely, while disadvantages include high costs and lack of real-world consequences in training. Future
4. CONTENT OUTLINE
• What is Virtual Reality?
• History of VR
• Types of VR
• Applications
• Advantages
• Disadvantages
• Current Problems
• Future of VR?
5. WHAT IS VIRTUAL REALITY?
• Virtual Reality (VR) is the illusion of a three-dimensional,
interactive, computer-generated reality where sight,
sound, and sometimes even touch are simulated to
create pictures, sounds, and objects that actually seem
real.
7. History of VR
• Morton Heilig
• Not in computers!
• Surround sound idea for the eyes…
• “…why use 18% of the viewer’s
field of vision in 2D, when we can
use 100% in 3D…”
• OOPS… No Money!!!
Helig’s plan fell through.
8. History
• Heilig’s ideas fell through, Ivan Sutherland, a student at University of
Utah continued.
• 1966… Created his version… happy!
• NASA and military realized the potential.
• Heilig’s machine = cameras
But…
Sutherland’s idea = CRT’s, graphics accelerators, computer generated
images.
10. 10
Types of VR System
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).
11. 11
Types of VR System(Cont’d)
Mixed Reality(Augmented Reality)
• The seamless merging of real space and virtual space.
• Integrate the computer-generated virtual objects into 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.
19. Applications
Medicine
Practice performing surgery.
Perform surgery on a remote patient.
Teach new skills in a safe, controlled environment.
23. •Visualize and manipulate things that you cannot see in the real
world
•Take on different perspectives
•Visualize 3D concepts
•Interact in real time
•Explore dangerous situations
•Present realistic or abstract scenarios
•Promote different learning styles and teaching methods
VR makes it possible to:
Why Virtual Reality in Education?
25. We have a surprise for you!!!
• VR Acrophobia- 3D Jump from Mountain VR [Google Cardboard VR Box 360]
Virtual Reality Video 3D SBS.mp4
• The Conjuring 2 - Experience Enfield VR 360 [HD].mp4
26. Advantages
• Many different fields can use VR as a way to train students without actually putting
anyone in harm's way. This includes the fields of medicine, law enforcement,
architecture and aviation.
• VR also helps those that can't get out of the house experience a much fuller life.
• These patients can explore the world through virtual environments like Second Life,
a VR community on the Internet, exploring virtual cities.
• VR also helps patients recover from stroke and other injuries. Doctors are using VR to
help reteach muscle movement such as walking and grabbing as well as smaller
physical movements such as pointing.
• This also helps record exactly how quickly a patient is learning and recovering.
27. Disadvantages
• The hardware needed to create a fully immersed VR experience is still cost
prohibitive.
• The total cost of the machinery to create a VR system is still the same price as a
new car, around $20,000.
• The technology for such an experience is still new and experimental.
• The idea of escapism is common place among those that use VR environments and
people often live in the virtual world instead of dealing with the real one.
• Training with a VR environment does not have the same consequences as training
and working in the real world. This means that even if someone does well with
simulated tasks in a VR environment, that person might not do well in the real
world.
28. Current problems & Future work
Cybersickness / simulator sickness
Low-fidelity
Expensive
Lack of integration between application packages
High-fidelity system
Cost-saving
Collaborative
High-level contact between participants in distributed
VR
29. Future of VR?
• Virtual Reality is an extremely fast growing industry.
• Maybe 3D user interfaces will replace the windows based ones?
• Revolution in gaming industries
• Future only bound by technological advance
• Nanotechnology?
• Implants?
• U.S.A. is already researching about:
• Retina image screening
• Nervous system implanting
• Unmanned Flight
• Gulf War…
VR first creates a computer generated environment. Then simulates… and then it manipulates virtual objects, That is the power of VR. You can change this classroom into a desrt, an island, a forest or whatever you can imagine.
Lets take a look at the history of VR. Well the idea of VR was brought up by Morton Hellig. He wanted to create something that didn’t deal with computers but with surroundings too. The rough sketches you see on the screen are Hellig’s tentative plan for the headset. He didn’t have financial support so he couldn’t complete the project.
If you want to imagine, you can imagine augmented reality as there will be display of labels on all objects you view.
We have just scratched the surface of augmented reality. We can teach people assemble not only small machinery but big machines too like cars, motor bikes, refrigerators, etc. In the future, we can take it to the next level by assembling and testing rockets and collider models through virtual reality itself.
Distributed virtual reality lets different people connect in the same reality at the same instant at the same location but with different jobs. We can use this to create worlds where people would perform different jobs and learn to work together as a system.
Cube shaped room
Walls are projection screens
Must be placed inside a dark room
Images are projected on the screens
Special glasses are worn by the user
Sensors are fitted in the room
Fidelity means the degree of exactness to which something is produced or copied. So we need a high-fidelity system if we want to train people in the exact same environment as they will face in reality. Another problem we face in today’s VR technology is that the application packages are not integrated properly so there is problem when a program is ran and the hardware and software get out of sync.
