Telepresence

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A telepresence system in 2007

Telepresence refers to a set of technologies which allow a person to feel as if they were present, to give the appearance of being present, or to have an effect, via telerobotics, at a place other than their true location.

Telepresence requires that the users' senses be provided with such stimuli as to give the feeling of being in that other location. Additionally, users may be given the ability to affect the remote location. In this case, the user's position, movements, actions, voice, etc. may be sensed, transmitted and duplicated in the remote location to bring about this effect. Therefore information may be traveling in both directions between the user and the remote location.

A popular application is found in telepresence videoconferencing, the highest possible level of videotelephony. Telepresence via video deploys greater technical sophistication and improved fidelity of both sight and sound than in traditional videoconferencing. Technical advancements in mobile collaboration have also extended the capabilities of videoconferencing beyond the boardroom for use with hand-held mobile devices, enabling collaboration independent of location.

History

The term telepresence was coined in a 1980 article by Marvin Minsky, who outlined his vision for an adapted version of the older concept of teleoperation that focused on giving the remote participation a feeling of actually being present.

A science fiction entitled Waldo by Robert A. Heinlein proposed a primitive telepresence master-slave manipulator system in 1942. In his pioneering paper, Minsky wrote: "My first vision of a remote-controlled economy came from Robert A. Heinlein's prophetic 1948 novel, Waldo." The year of the publication of Waldo in Minsky's comment in the paper was incorrect.

The Brother Assassin, written by Fred Saberhagen in 1969, introduced the complete concept for a telepresence master-slave humanoid system. In the novel, the concept is described as follows: "And a moment later it seemed to all his senses that he had been transported from the master down into the body of the slave-unit standing beneath it on the floor. As the control of its movements passed over to him, the slave started gradually to lean to one side, and he moved its foot to maintain balance as naturally as he moved his own. Tilting back his head, he could look up through the slave's eyes to see the master-unit, with himself inside, maintaining the same attitude on its complex suspension."

The first commercially successful telepresence company, Teleport (which was later renamed TeleSuite), was founded in 1993 by David Allen and Harold Williams. Before TeleSuite, they ran a resort business from which the original concept emerged, because they often found businesspeople would have to cut their stays short to participate in important meetings. Their idea was to develop a technology that would allow businesspeople to attend their meetings without leaving the resorts so that they could lengthen their hotel stays.

Hilton Hotels had originally licensed to install them in their hotels throughout the United States and other countries, but use was low. The idea lost momentum, with Hilton eventually backing out. TeleSuite later began to focus less on the hospitality industry and more on business-oriented telepresence systems. Shareholders eventually held enough stock to replace the company's original leadership, which ultimately led to its collapse. David Allen purchased all of the assets of TeleSuite and appointed Scott Allen as president of the new company called Destiny Conferencing.

Destiny Conferencing licensed its patent portfolio to HP which became the first large company to join the telepresence industry, soon followed by others such as Cisco and Polycom. After forming a distribution agreement with Pleasanton-based Polycom, Destiny Conferencing sold on January 5, 2007 to Polycom for $60 million.

An important research project in telepresence began in 1990. Headquartered at the University of Toronto, the Ontario Telepresence Project "was a three year, $4.8 million pre-competitive research project whose mandate was to design and field trial advanced media space systems in a variety of workplaces in order to gain insights into key sociological and engineering issues. The OTP, which ended December, 1994, was part of the International Telepresence Project which linked Ontario researchers to counterparts in four European nations. The Project’s major sponsor was the Province of Ontario through two of its Centres of Excellence—the Information Technology Research Centre (ITRC) and the Telecommunications Research Institute of Ontario (TRIO)." (quoting from the project's final report) The Project was an interdisciplinary effort involving social sciences and engineering.

Benefits

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A telepresence room in use, 2007

An industry expert described some benefits of telepresence: "There were four drivers for our decision to do more business over video and telepresence. We wanted to reduce our travel spend, reduce our carbon footprint and environmental impact, improve our employees' work/life balance, and improve employee productivity.".

Rather than traveling great distances in order to have a face-face meeting, it is now commonplace to instead use a telepresence system, which uses a multiple codec video system (which is what the word "telepresence" most currently represents). Each member/party of the meeting uses a telepresence room to "dial in" and can see/talk to every other member on a screen/screens as if they were in the same room. This brings enormous time and cost benefits. It is also superior to phone conferencing (except in cost), as the visual aspect greatly enhances communications, allowing for perceptions of facial expressions and other body language.

Mobile collaboration systems combine the use of video, audio and on-screen drawing capabilities using newest generation hand-held mobile devices to enable multi-party conferencing in real-time, independent of location. Benefits include cost-efficiencies resulting from accelerated problem resolution, reductions in downtimes and travel, improvements in customer service and increased productivity.

Implementation

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Telepresence today

Telepresence has been described as the human experience of being fully present at a live real-world location remote from one's own physical location. Someone experiencing video telepresence would therefore be able to behave, and receive stimuli, as though part of a meeting at the remote site. The aforementioned would result in interactive participation of group activities that would bring benefits to a wide range of users.

Implementation of human sensory elements

To provide a telepresence experience, technologies are required that implement the human sensory elements of vision, sound, and manipulation.

Vision

A minimum system usually includes visual feedback. Ideally, the entire field of view of the user is filled with a view of the remote location, and the viewpoint corresponds to the movement and orientation of the user's head. In this way, it differs from television or cinema, where the viewpoint is out of the control of the viewer.

In order to achieve this, the user may be provided with either a very large (or wraparound) screen, or small displays mounted directly in front of the eyes. The latter provides a particularly convincing 3D sensation. The movements of the user's head must be sensed, and the camera must mimic those movements accurately and in real time. This is important to prevent unintended motion sickness.

Another source of future improvement to telepresence displays, compared by some to holograms, is a projected display technology featuring life-sized imagery.

Sound

Sound is generally the easiest sensation to implement with high fidelity, based on the foundational telephone technology dating back more than 130 years. Very high-fidelity sound equipment has also been available for a considerable period of time, with stereophonic sound being more convincing than monaural sound.

Manipulation

The ability to manipulate a remote object or environment is an important aspect for some telepresence users, and can be implemented in large number of ways depending on the needs of the user. Typically, the movements of the user's hands (position in space, and posture of the fingers) are sensed by wired gloves, inertial sensors, or absolute spatial position sensors. A robot in the remote location then copies those movements as closely as possible. This ability is also known as teleoperation.

The more closely the robot re-creates the form factor of the human hand, the greater the sense of telepresence. Complexity of robotic effectors varies greatly, from simple one axis grippers, to fully anthropomorphic robot hands.

Haptic teleoperation refers to a system that provides some sort of tactile force feedback to the user, so the user feels some approximation of the weight, firmness, size, and/or texture of the remote objects manipulated by the robot.

Degree of implementation: immersive vs. adaptive, or lite

Telepresence's effectiveness varies by degree of fidelity. Research has noted that telepresence solutions differ in degree of implementation, from "immersive" through "adaptive" to "lite" solutions. At the top are immersive solutions where the environments at both ends are highly controlled (and often the same) with respect to lighting, acoustics, decor and furniture, thereby giving all the participants the impression they are together at the same table in the same room, thus engendering the "immersive" label.

Adaptive telepresence solutions may use the same technology, but the environments at both ends are not highly controlled and hence often differ. Adaptive solutions differ from telepresence lite solutions not in terms of control of environments, but in terms of integration of technology. Adaptive solutions use a managed service, whereas telepresence lite solutions use components that someone must integrate.

Transparency of implementation

A good telepresence strategy puts the human factors first, focusing on visual collaboration configurations that closely replicate the brain's innate preferences for interpersonal communications, separating from the unnatural "talking heads" experience of traditional videoconferencing. These cues include life–size participants, fluid motion, accurate flesh tones and the appearance of true eye contact. This is already a well-established technology, used by many businesses today. The chief executive officer of Cisco Systems, John Chambers in June 2006 at the Networkers Conference compared telepresence to teleporting from Star Trek, and said that he saw the technology as a potential billion dollar market for Cisco.

Rarely will a telepresence system provide such a transparent implementation with such comprehensive and convincing stimuli that the user perceives no differences from actual presence. But the user may set aside such differences, depending on the application.

The fairly simple telephone achieves a limited form of telepresence using just the human sensory element of hearing, in that users consider themselves to be talking to each other rather than talking to the telephone itself.

Watching television, for example, although it stimulates our primary senses of vision and hearing, rarely gives the impression that the watcher is no longer at home. However, television sometimes engages the senses sufficiently to trigger emotional responses from viewers somewhat like those experienced by people who directly witness or experience events. Televised depictions of sports events, or disasters such as the September 11 terrorist attacks, can elicit strong emotions from viewers.

As the screen size increases, so does the sense of immersion, as well as the range of subjective mental experiences available to viewers. Some viewers have reported a sensation of genuine vertigo or motion sickness while watching IMAX movies of flying or outdoor sequences.

Because most currently feasible telepresence gear leaves something to be desired; the user must suspend disbelief to some degree, and choose to act in a natural way, appropriate to the remote location, perhaps using some skill to operate the equipment. In contrast, a telephone user does not see herself as "operating" the telephone, but merely talking to another person with it.

Related technologies

Videocalls and videoconferencing

Videophone

Virtual presence (virtual reality)

Telepresence refers to a user interacting with another live, real place, and is distinct from virtual presence, where the user is given the impression of being in a simulated environment. Telepresence and virtual presence rely on similar user-interface equipment, and they share the common feature that the relevant portions of the user's experience at some point in the process will be transmitted in an abstract (usually digital) representation. The main functional difference is the entity on the other end: a real environment in the case of telepresence, vs. a computer in the case of immersive virtual reality.

The cooperative web

The Cooperative web or Co-Web refers to a browser-based platform that promises to replicate the power of face-to-face communications via web-touch without sacrificing the quality of human interactions, using the human sensory elements of vision, sound and manipulation.

Applications

Application examples could be cited within emergency management and security services, B&I, and the entertainment and education industries.

Connecting communities

Telepresence can be used to establish a sense of shared presence or shared space among geographically separated members of a group.

Hazardous environments

Many other applications in situations where humans are exposed to hazardous situations are readily recognised as suitable candidates for telepresence. Mining, bomb disposal, military operations, rescue of victims from fire, toxic atmospheres, deep sea exploration, or even hostage situations, are some examples. Telepresence also plays a critical role in the exploration of other worlds, such as with the Mars Exploration Rovers, which are teleoperated from Earth.

Pipeline inspection

Small diameter pipes otherwise inaccessible for examination can now be viewed using pipeline video inspection.

Remote surgery

The possibility of being able to project the knowledge and the physical skill of a surgeon over long distances has many attractions. Thus, again there is considerable research underway in the subject. (Locally controlled robots are currently being used for joint replacement surgery as they are more precise in milling bone to receive the joints.) The armed forces have an obvious interest since the combination of telepresence, teleoperation, and telerobotics can potentially save the lives of battle casualties by allowing them prompt attention in mobile operating theatres by remote surgeons.

Recently, teleconferencing has been used in medicine (telemedicine or telematics), mainly employing audio-visual exchange, for the performance of real time remote surgical operations - as demonstrated in Regensburg, Germany in 2002. In addition to audio-visual data, the transfer of haptic (tactile) information has also been demonstrated in telemedicine.

Sign language communications via videotelephony

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Video Interpreter sign used at VRS/VRI service locations

Main articles: Video Relay Service, a telecommunication service for deaf, hard-of-hearing and speech-impaired (mute) individuals communicating with hearing persons, and also Video Remote Interpreting, used when both parties are at the same location.

Video Relay Service

Education

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A professional development expert in Denver uses telepresence to coach a teacher in Utah during the initial research of Project ThereNow, by Shawn Edmondson, Ph.D.

Research has been conducted on the use of telepresence to provide professional development to teachers. Research has shown that one of the most effective forms of teacher professional development is coaching, or cognitive apprenticeship. The application of telepresence shows promise for making this approach to teacher professional development practical.

The benefits of enabling schoolchildren to take an active part in exploration have also been shown by the JASON and the NASA Ames Research Center programs. The ability of a pupil, student, or researcher to explore an otherwise inaccessible location is a very attractive proposition; For example, locations where the passage of too many people is harming the immediate environment or the artifacts themselves, e.g. undersea exploration of coral reefs, ancient Egyptian tombs, and more recent works of art.

Telepresence art

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A soap opera for iMacs

True telepresence is a multidisciplinary art and science that foundationally integrates engineering, psychology, and the art of television broadcast.

In 1998, Diller and Scofidio created the "Refresh", an Internet-based art installation that juxtaposed a live web camera with recorded videos staged by professional actors. Each image was accompanied with a fictional narrative which made it difficult to distinguish which was the live web camera.

In 1993, Eduardo Kac and Ed Bennett created a telepresence installation "Ornitorrinco on the Moon", for the international telecommunication arts festival "Blurred Boundaries" (Entgrenzte Grenzen II). It was coordinated by Kulturdata, in Graz, Austria, and was connected around the world.

From 1997 to the present Ghislaine Boddington of shinkansen and body>data>space has explored, in a multi group process called The Weave using performing arts techniques, the extended us of telepresence into festivals, arts centres and clubs and has directed numerous workshops leading to exploration of telepresence by many artists worldwide. This work has been most recently applied to extending skills in tele-intuition for young people in preparation for the future world of work through the body>data>space / NESTA project "Robots and Avatars" an innovative project explores how young people will work and play with new representational forms of themselves and others in virtual and physical life in the next 10–15 years.

An overview of tele-presence in dance and theatre through the last 20 years is given in Excited Atoms a research document by Judith Staines (2009) which one can download from the On The Move website

Telepresence and artificial intelligence

Marvin Minsky was one of the pioneers of intelligence-based mechanical robotics and telepresence. He designed and built some of the first mechanical hands with tactile sensors, visual scanners, and their software and computer interfaces. He also influenced many robotic projects outside of MIT, and designed and built the first LOGO "turtle."

Vendors

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Popular culture

Telepresence is represented in media and entertainment.

Television

• 24 (2001–2010)

Film

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• Ra.One (2011)
• Avatar (2009)
• G.I. Joe: The Rise of Cobra (2009)
• Gamer (2009)
• Surrogates (2009)
• Sleep Dealer (2008)
• Avalon (2001)
• The Matrix (1999)
• Telepresence (1997)
• The Star Wars films (1977-2005) with holographic technology used for communication
• Template:Cat

Video games

• Splinter Cell: Conviction (2010)
• Half-Life 2: Episode 2 (2007)

Comics

• Lamar Waldron's "M.I.C.R.A. Mind Controlled Remote Automaton" (1987), related the story of a college female paralyzed by a neck injury, who volunteered to be the remote pilot of an android body created by one of her professors.

Virtual reality communities

• Active Worlds and Second Life allow voice chat with 3D avatars

See also

• Avatar (computing)
• Cisco TelePresence
• IOCOM
• List of video telecommunication services and product brands, services and brands across multiple categories
• Media space
• Mobile collaboration
• Presence (telepresence), analysis of the scientific basis behind telepresence
• Presence Information, the factors that determine ones computer-based degree of presence (busy/free, etc.)
• Telecollaboration
• Teleconferencing, a more basic form of conferencing that employs sound, or sound and data only
• Telepresence technology, used by NOAA for oceanographic research
• Telerobotics, deployment of robotics via telecommunications, with applications such as telesurgury, remote mining, etc.
• Telexistence
• Unotchit
• Video Relay Service, a communication service for the deaf or speech-impaired
• Videoconferencing, one-to-many or many-to-many video teleconferencing using a Multipoint Control Unit
• Videophone, one-to-one video calling without the benefit of a Multipoint Control Unit
• Videotelephony
• Virtual fixture
• Virtual reality
• Visual networking

References

According to Wikipedia this article had "multiple issues" when it was imported.

Further reading

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• "Telepresence" (Minsky 1980; Sheridan 1992a; Barfield, Zelter, Sheridan, & Slater 1995; Welch, Blackmon, Liu, Mellers, & Stark 1996)
• "Virtual presence" (Barfield et al., 1995)
• Oliver Grau: Virtual Art: From Illusion to Immersion, MIT-Press, Cambridge 2003
• Eduardo Kac: Telepresence and Bio Art—Networking Humans, Rabbits and Robot (Ann Arbor: University of Michigan Press, 2005)
• "Being there" (Reeves 1991; Heeter 1992; Barfield et al., 1995; Zhoa 2003)
• "A perceptual illusion of non-mediation "(Lombard & Ditton 1997)
• "The suspension of disbelief" (Slater & Ushoh 1994)
• unknown title (Sheridan, 1992, 1992; Barfield & Weghorst, 1993; Slater & Usoh, 1994; Barfield, Sheridan, Zeltzer, Slater, 1995)

• Sheridan, Thomas B. (1992), "Telerobotics, Automation, and Human Supervisory Control, Cambridge, MA: MIT Press. Second edition (2003) ISBN 0-262-51547-4

External links

This page uses content from MediaWiki Commons. The original media file was at Videotelephony#Telepresence_systems_and_components. The list of authors can be seen in the page history. Media files on MediaWiki Commons are Reusable outside Wikimedia.

• Being There, ProAV Magazine, 7 November 2008
• "The Boss Is Robotic, and Rolling Up Behind You" article by John Markoff in The New York Times September 4, 2010
• 2011, Telepresence Interoperability Protocol for Developers http://www.imtc.org/tip/
• "Chatroulette.com" popular telepresence website
• "Cam.GL" popular telepresence website

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