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Virtual Reality(VR)

Shreyash Patel
Shreyash Patel

Virtual reality (VR) refers to interactive computer-simulated environments that immerse users in an artificial world. VR has its origins in the 1950s with flight simulators and has since developed to include head-mounted displays, audio components, and data gloves. While VR has applications in fields like manufacturing, education, and medicine due to its ability to provide realistic simulations, disadvantages include health concerns from extended use and the difficulty of truly replicating real-world experiences.

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Virtual Reality(VR)
Introduction History Components Types Application Advantages Disadvantages Conclusion
What is Virtual Reality(VR)? Virtual Reality refers to a high-end user interface that involves real-time simulation and interactions through multiple sensorial channels. Why VR? VR is able to immerse you in a computer-generated world of your own making: a room, a city, the interior of human body. With VR, you can explore any uncharted territory of the human imagination.
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 was laid out. In 1988, commercial development of VR began. In 1991, first commercial entertainment VR system "Virtuality" was released.
The Virtual Reality System works on the following principle - It tracks the physical movements in the real world, then a rendering computer redraws the virtual world to reflects those movements. The updated virtual world is sent to the output (to the user in the real world). In this case, the output is sent back to a head mounted display.
Reality Engine Head Mounted Display (Hmd) Audio Units Gloves
Virtual reality images are made with tiny dot like segments of a picture known as pixels, or picture elements. Each pixel itself is made up of hundreds of thousands of dots. Realistic images can be either opaque, in which all the viewer sees is the virtual world, or see-through, in which the virtual image is projected or superimposed onto the outer world.
Head-mounted display (HMD) units use a small screen or screens (one for each eye) that are worn in a helmet or a pair glasses. Unlike a movie, where the director controls what the viewer sees, the HMD allows viewers to look at an image from various angles or change their field of view by simply moving their heads. HMD units usually employ cathode-ray tube (CRT) or liquid crystal display (LCD) technology. civilian/commercial (medicine, video gaming, sports, etc.).
The audio portion of virtual reality is transmitted through small speakers placed over each ear. Audio cues may include voices, singing, thud like noises of colliding objectsin short, any sound that can be recorded. Sounds that seem to come from above, below, or either side provide audio cues that mimic how sounds are heard in the real world. Three-dimensional (or omni-directional) sound further enhances the virtual reality experience.
Gloves in virtual reality allow the user to interact with the virtual world. For example, the user may pick up a virtual block, turn it over in a virtual hand, and set it on a virtual table. The computer then analyzes the corresponding information and projects this moving hand into the virtual reality. Magnetic tracking systems also are used to determine where the hand is in space in relation to the virtual scene.
Hardware Primary user input interfaces Tracking interfaces Visual interfaces Auditory interfaces Software Input Process Simulation Process World Database
Manufacturing Easy to modify Low cost High efficient Education & Training Driving simulators. Flight simulators. Ship simulators. Tank simulators.
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 as well as more fanciful environments. VR also helps patients recover from stroke and other injuries.
One worry is that as VR environments become much higher quality and immersive, they will become attractive to those wishing to escape real life. 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.
VR introduces a new way of interacting with computers. The best of VR is yet to come. Web is very suitable for VR applications, but the proper technology is not yet there.
www.studymafia.org www.vrs.org.uk www.techtarget.com
Virtual Reality(VR)
If You want a PPT of this Subject you can Contact me on my E-mail pshreyash50@gmail.com

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Virtual Reality(VR)

  • 3. What is Virtual Reality(VR)? Virtual Reality refers to a high-end user interface that involves real-time simulation and interactions through multiple sensorial channels. Why VR? VR is able to immerse you in a computer-generated world of your own making: a room, a city, the interior of human body. With VR, you can explore any uncharted territory of the human imagination.
  • 4. 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 was laid out. In 1988, commercial development of VR began. In 1991, first commercial entertainment VR system "Virtuality" was released.
  • 5. The Virtual Reality System works on the following principle - It tracks the physical movements in the real world, then a rendering computer redraws the virtual world to reflects those movements. The updated virtual world is sent to the output (to the user in the real world). In this case, the output is sent back to a head mounted display.
  • 6. Reality Engine Head Mounted Display (Hmd) Audio Units Gloves
  • 7. Virtual reality images are made with tiny dot like segments of a picture known as pixels, or picture elements. Each pixel itself is made up of hundreds of thousands of dots. Realistic images can be either opaque, in which all the viewer sees is the virtual world, or see-through, in which the virtual image is projected or superimposed onto the outer world.
  • 8. Head-mounted display (HMD) units use a small screen or screens (one for each eye) that are worn in a helmet or a pair glasses. Unlike a movie, where the director controls what the viewer sees, the HMD allows viewers to look at an image from various angles or change their field of view by simply moving their heads. HMD units usually employ cathode-ray tube (CRT) or liquid crystal display (LCD) technology. civilian/commercial (medicine, video gaming, sports, etc.).
  • 9. The audio portion of virtual reality is transmitted through small speakers placed over each ear. Audio cues may include voices, singing, thud like noises of colliding objectsin short, any sound that can be recorded. Sounds that seem to come from above, below, or either side provide audio cues that mimic how sounds are heard in the real world. Three-dimensional (or omni-directional) sound further enhances the virtual reality experience.
  • 10. Gloves in virtual reality allow the user to interact with the virtual world. For example, the user may pick up a virtual block, turn it over in a virtual hand, and set it on a virtual table. The computer then analyzes the corresponding information and projects this moving hand into the virtual reality. Magnetic tracking systems also are used to determine where the hand is in space in relation to the virtual scene.
  • 11. Hardware Primary user input interfaces Tracking interfaces Visual interfaces Auditory interfaces Software Input Process Simulation Process World Database
  • 12. Manufacturing Easy to modify Low cost High efficient Education & Training Driving simulators. Flight simulators. Ship simulators. Tank simulators.
  • 13. 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 as well as more fanciful environments. VR also helps patients recover from stroke and other injuries.
  • 14. One worry is that as VR environments become much higher quality and immersive, they will become attractive to those wishing to escape real life. 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.
  • 15. VR introduces a new way of interacting with computers. The best of VR is yet to come. Web is very suitable for VR applications, but the proper technology is not yet there.
  • 18. If You want a PPT of this Subject you can Contact me on my E-mail pshreyash50@gmail.com