Difference between revisions of "Virtual Reality"

Revision as of 03:55, 6 February 2022

Virtual Reality (VR) refers to the immersive technology that creates and places human into an artificial world that is similar but different from the real world.^[1] As a popular technology in the 21st century, virtual reality plays an important role in a wide variety of fields, including entertainment (VR games), social connections (remote meetings), business(virtual offices) and medical treatments(curing mental disease). VR related technology mainly includes augmented reality and mixed reality.^[2]

Virtual Reality Technology can be classified into three general category based on the extent of human immersion: non-immersive VR, semi-immersive VR, and fully-immersive VR simulations. The non-immersive VR includes most 3D movie and games that portray a virtual world but the user does not enter the virtual world himself or herself. The semi-immersive VR indicates VR technology which provides an immersive virtual world for the user but the user is still somewhat exposed to the real world. The fully-immersive VR simulations refers to the VR technology that enables user to fully immerse in the artificial reality without direct visual contact to the real world.^[3]

Definition and Etymology

The word 'virtual' can indicate a material or image that is created by computer related technology and appear to exist but not actually existing in the physical world.^[4] The word 'reality' describe the state of things as they actually are in the physical world. ^[5] Combining the meaning of the two words, 'virtual reality' refers to a set of images and sounds, produced by a computer, that seem to represent a place or a situation that a person can take part in.^[6]

Referring to the relative new terminology, the word 'virtual reality' is first used by Jaron Zepel Lanier, the founder of VPL Research and a pioneer in the field of virtual reality technology research, to refer the first business-grade hardware, which is invented by Jaron himself, that features the use of virtual reality systems.^[7]

Related Concept and Difference

History

Because of the debating definition of virtual reality, there is no generally accepted agreement on the origin and related prototype of virtual reality. ^[8]The following history description of virtual reality will only include the development of modern virtual reality that fully creates a virtual world with real-world applications.
1960s
In 1962, Morton Heilig created a multi-sensory simulator that was able to prerecorded film in color and stereo with the augmentation of wind, scent and sound to provide virtual experiences for users. Although this first virtual reality system was able to provide all features of a virtual world, the simulator is so primitive that it was unable to perform any interactive functions to users at all.^[9]

In 1965, Ivan Sutherland put forward a ultimate concept of what a virtual reality would look like in the future: a machine that will provide interactive graphics, scent, smell, touch and all other feelings that was exactly the same as the real world feelings. Though Ivan did not use the word virtual reality, he depicted all the potential function for a modern virtual reality technology.

In 1968, Ivan Sutherland and his student Bob Sproull created the first virtual reality system realized in hardware instead of only in concept. This first virtual reality system creatively applied Head Mounted Display (HMD) technology to provide immersive simulation for the first time. Although the system shows drawback of over heaviness and inconvenience for the user, it provided some level of interactive functions than the simulator created by Morton Heilig. This first HMD system is named 'The Sword of Damocles' because of its weird appearance.^[10]

1970s
In 1971, researchers at the University of North Carolina (UNC) successfully invented the first prototype of a force-feedback system. ^[11]

In 1977, David Em creatively applied the virtual simulator to the NASA's Jet Propulsion Laboratory (JPL) for astronomical usage, which was milestone in virtual reality applications. ^[12]

1980s
In 1988, a Cyberspace Project at Autodesk implemented VR on a personal computer for the first time, which allowed for stronger interactive functions and better images than simulator alone could perform.^[13]

In 1989, Jaron Lanier first used the terminology "virtual reality" to refer to all the simulator creating unreal experiences similar to real-world experiences. Besides his great contribution in research fields, Lanier founded his company VPL Research, which focused on virtual reality applications in 1985. VPL Research has developed several successfully merchandised VR devices, including DataGlove (1985), which is the first merchandised virtual reality product.^[14][15]

1990s
In 1992, Carolina Cruz-Neira, Daniel J. Sandin, and Thomas A. DeFanti invented CAVE (CAVE Automatic Virtual Environment), a virtual reality and scientific visualization system that first used stereoscopic images on the walls of room instead of HMD. Such creative approach allows CAVE to perform far more superior images and convenience to users than any other prototypes using the HMD technology. ^[16]In the same year, Nicole Stenger created the first movie that is both immersive and interactive for the viewers.^[17]

In 1995, Nintendo released its Virtual Boy console, which was the first video game console capable of displaying stereoscopic "3D" graphics. Considered as a form of virtual reality, the Virtual Boy console symbolled the start of application in the game industry. ^[18]

21st Century
After 40 years of development, virtual reality technology became mature enough to support a boom of commercialized products in the 21st century in many different fields (mostly in entertainment)
In 2010, Palmer Luckey designed a prototype of the Oculus Rift, which was able to provide a 90-degree field of view with low latency, and built-in haptic feedback.
In 2013, Valve adopted the Oculus prototype and used it in all their future headsets. In early 2014, Valve published their SteamSight prototype, which is equipped with the consumer headsets including separate 1K displays per eye, low persistence, positional tracking over a large area, and fresnel lenses.^[19]
In 2021, virtual reality is first approved to be used in flight simulation training by the the European Union Aviation Safety Agency (EASA).

Future Forecasting
With the rapid development of virtual reality technology, it becomes a widely known by the general public and gradually enters people's daily life. Virtual reality is widely believed to be a promising and striving new technology in the future.^[20]

Categories

Ethical Concern

Mental Health Risk
The exact mental health risk caused by heavy use of virtual reality is still uncertain due to the currently low application rate of virtual reality. However, according to many scientific experiment, heavy use of virtual reality already shows great possibility in leading to several significant mental health issue to virtual reality users.

According to many scientific studies, user has a high possibility of having 'Cybersickness', which describes the feelings of nausea, fatigue, dizziness, and bodily disorientation, after frequently exposing to virtual reality. Such 'Cybersickness' may lead considerably uncomfortable feelings to the users. Though such side effect may be minimized with the development of the virtual reality technology in the future, it will remain to be a huge health issue to virtual reality users in the next few years or even dozens of years.^[21]

Beyond potential physical harm to users, virtual reality may lead to user's inability to readjust to the real world. This is because users always have a stronger control of the virtual reality so they will adjust the virtual reality to meet their satisfaction. With a more satisficing virtual reality, users may prefer to view the virtual reality as their 'true reality' and feel that the 'true reality' is unreal. As the virtual reality technology becomes increasingly developed, the world in virtual reality may become more realistic and attractive, leading to a higher potential to the disorder of inability to readjust to the real world.^[22][23]
Virtual reality may also lead to depersonalization and derealization dissociative disorders by creating illusion of embodiment. ^[24] These effect may cause users to be separated by the society and cause significant negative effect to users daily life in the true reality.

Injuries Caused by Bodily Neglect
As the development of virtual reality to create increasingly 'real' world for the users, there is an increasing risk for users to neglect their current physical body conditions and real world environment due to virtual reality's immersive nature. Neglecting their body and environment may lead to great danger to the users. To illustrate, a user may punch a table in the real world at the same time that he is punching an enemy in the virtual world, thus leading to injuries or even broken bones. Since there have been numerous reports of severe illnesses and fatalities due to video gamers neglecting their own physical well-being, virtual reality is highly likely to cause even more injuries than video games that are not as immersive as video game in nature.^[25] Such bodily neglect may even cause danger to other people since virtual reality users may be unaware of other people's existence in their surroundings and unintentionally hurt them.

Privacy Issue

1. ↑ J. N. Latta and D. J. Oberg, "A conceptual virtual reality model," in IEEE Computer Graphics and Applications, vol. 14, no. 1, pp. 23-29, Jan. 1994, doi: 10.1109/38.250915.
2. ↑ "Get Ready to Hear a Lot More About 'XR'". Wired. 1 May 2019. ISSN 1059-1028. Retrieved 29 August 2020.
3. ↑ Castronovo, Fadi, et al. "An evaluation of immersive virtual reality systems for design reviews." Proceedings of the 13th international conference on construction applications of virtual reality. Vol. 47. 2013.
4. ↑ Cambridge Dictionary:https://dictionary.cambridge.org/us/dictionary/english/virtual
5. ↑ Cambridge Dictionary:https://dictionary.cambridge.org/us/dictionary/english/reality
6. ↑ Cambridge Dictionary: https://dictionary.cambridge.org/us/dictionary/english/virtual-reality
7. ↑ Sala, Nicoletta. "Virtual reality, augmented reality, and mixed reality in education: A brief overview." Current and prospective applications of virtual reality in higher education (2021): 48-73.
8. ↑ Matthew Schnipper. "Seeing is Believing: The State of Virtual Reality". The Verge. Retrieved 7 March 2017.
9. ↑ Mazuryk, Tomasz, and Michael Gervautz. "Virtual reality-history, applications, technology and future." (1996).
10. ↑ Druck, Aaron. "When will virtual reality become a reality." (2006).
11. ↑ Mazuryk, Tomasz, and Michael Gervautz. "Virtual reality-history, applications, technology and future." (1996).
12. ↑ Nelson, Ted (March 1982). "Report on Siggraph '81". Creative Computing.
13. ↑ Barlow, John Perry (1990). "Being in Nothingness". Wired.
14. ↑ Satava, Richard M. "Robotic surgery: from past to future—a personal journey." Surgical Clinics 83.6 (2003): 1491-1500.
15. ↑ Mazuryk, Tomasz, and Michael Gervautz. "Virtual reality-history, applications, technology and future." (1996).
16. ↑ Cruz-Neira, Carolina, et al. "The CAVE: audio visual experience automatic virtual environment." Communications of the ACM 35.6 (1992): 64-73.
17. ↑ Rosenberg, Louis (1992). "The Use of Virtual Fixtures As Perceptual Overlays to Enhance Operator Performance in Remote Environments.". Technical Report AL-TR-0089, USAF Armstrong Laboratory, Wright-Patterson AFB OH, 1992.
18. ↑ "Nintendo Virtual Boy on theverge.com". Archived from the original on 1 April 2014.
19. ↑ James, Paul (30 January 2014). "30 Minutes Inside Valve's Prototype Virtual Reality Headset: Owlchemy Labs Share Their Steam Dev Days Experience – Road to VR". Road to VR. Retrieved 14 December 2016
20. ↑ Cipresso, Pietro; Giglioli, Irene Alice Chicchi; Raya, Mariano Alcañiz; Riva, Giuseppe (2018). "The Past, Present, and Future of Virtual and Augmented Reality Research: A Network and Cluster Analysis of the Literature". Frontiers in Psychology. 9: 2086. doi:10.3389/fpsyg.2018.02086. ISSN 1664-1078. PMC 6232426. PMID 30459681
21. ↑ LaViola, J., Jr. (2000). A discussion of cybersickness in virtual environments. ACM SIGCHI Bulletin, 32, 47–56.
22. ↑ Searles, R. (2016). Virtual reality can leave you with an existential hangover. The Atlantic. December 21, 2016. https://www.theatlantic.com/technology/archive/2016/12/post-vr-sadness/511232/. Accessed February 21, 2017.
23. ↑ Behr, K.-M., Nosper, A., Klimmt, C., & Hartmann, T. (2005). Some practical considerations of ethical issues in VR research. Presence, 14, 668–676.
24. ↑ Aardema, F., O’Connor, K., Cote, S., & Taillon, A. (2010). Virtual reality induces dissociation and lowers sense of presence in objective reality. Cyberpsychology, Behavior, and Social Networking, 13, 429–435.
25. ↑ Oskin, B. (2012). Teens and video games: How much is too much? LiveScience. August 10, 2012 http://www.livescience.com/22281-teens-video-games-health-risks.html. Accessed February 23, 2017.