Augmented reality

Samsung SARI AR SDK markerless tracker used in the AR EdiBear game (Android OS)
AR Tower Defense game on the Nokia N95 smartphone (Symbian OS) uses fiducial markers
NASA X38 display showing video map overlays including runways and obstacles during flight test in 2000.

Augmented reality (AR) is a live direct or indirect view of a physical, real-world environment whose elements are augmented (or supplemented) by computer-generated sensory input such as sound, video, graphics or GPS data. It is also known as the computer term, Kudzi 3.0. It is related to a more general concept called mediated reality, in which a view of reality is modified (possibly even diminished rather than augmented) by a computer. As a result, the technology functions by enhancing one’s current perception of reality.[1] By contrast, virtual reality replaces the real world with a simulated one.[2][3] Augmentation is conventionally in real time and in semantic context with environmental elements, such as sports scores on TV during a match. With the help of advanced AR technology (e.g. adding computer vision and object recognition) the information about the surrounding real world of the user becomes interactive and digitally manipulable. Information about the environment and its objects is overlaid on the real world. This information can be virtual[4][5][6][7][8] or real, e.g. seeing other real sensed or measured information such as electromagnetic radio waves overlaid in exact alignment with where they actually are in space.[9][10] Augmented reality brings out the components of the digital world into a person's perceived real world. One example is an AR Helmet for construction workers which displays information about the construction sites.



Hardware components for augmented reality are: processor, display, sensors and input devices. Modern mobile computing devices like smartphones and tablet computers contain these elements which often include a camera and MEMS sensors such as accelerometer, GPS, and solid state compass, making them suitable AR platforms.[11]


Various technologies are used in Augmented Reality rendering including optical projection systems, monitors, hand held devices, and display systems worn on the human body.

Microsoft HoloLens

A head-mounted display (HMD) is a display device paired to the forehead such as a harness or helmet. HMDs place images of both the physical world and virtual objects over the user's field of view. Modern HMDs often employ sensors for six degrees of freedom monitoring that allow the system to align virtual information to the physical world and adjust accordingly with the user's head movements.[12][13][14] HMDs can provide VR users mobile and collaborative experiences.[15] Specific providers, such as uSens and Gestigon, are even including gesture controls for full virtual immersion.[16][17]

In January 2015, Meta launched a $1 project led by Horizons Ventures, Tim Draper, Alexis Ohanian, BOE Optoelectronics and Garry Tan.[18][19][20] On February 17, 2016, Meta announced their second-generation product at TED, Meta 2. The Meta 2 head-mounted display headset uses a sensory array for hand interactions and positional tracking, visual field view of 90 degrees (diagonal), and resolution display of 2560 x 1440 (20 pixels per degree), which is considered the largest field view (FOV) currently available.[21][22][23][24]


AR displays can be rendered on devices resembling eyeglasses. Versions include eyewear that employ cameras to intercept the real world view and re-display its augmented view through the eye pieces[25] and devices in which the AR imagery is projected through or reflected off the surfaces of the eyewear lens pieces.[26][27][28]

Headset computer
See also: Head-up display

Near eye augmented reality devices can be used as portable head-up displays as they can show data, information, and images while the user views the real world. Many definitions of augmented reality only define it as overlaying the information.[29][30] This is basically what a head-up display does; however, practically speaking, augmented reality is expected to include tracking between the superimposed information, data, and images and some portion of the real world.[31]

CrowdOptic, an existing app for smartphones, applies algorithms and triangulation techniques to photo metadata including GPS position, compass heading, and a time stamp to arrive at a relative significance value for photo objects.[32] CrowdOptic technology can be used by Google Glass users to learn where to look at a given point in time.[33]

In January 2015, Microsoft introduced HoloLens, which is an independent smartglasses unit. Brian Blau, Research Director of Consumer Technology and Markets at Gartner, said that "Out of all the head-mounted displays that I've tried in the past couple of decades, the HoloLens was the best in its class.".[34] First impressions and opinions have been generally that HoloLens is a superior device to the Google Glass, and manages to do several things "right" in which Glass failed.[34][35]

Contact lenses

Contact lenses that display AR imaging are in development. These bionic contact lenses might contain the elements for display embedded into the lens including integrated circuitry, LEDs and an antenna for wireless communication. The first contact lens display was reported in 1999[36] and subsequently, 11 years later in 2010/2011[37][38][39][40] Another version of contact lenses, in development for the U.S. Military, is designed to function with AR spectacles, allowing soldiers to focus on close-to-the-eye AR images on the spectacles and distant real world objects at the same time.[41][42] The futuristic short film Sight features contact lens-like augmented reality devices.[43][44]

Virtual retinal display

A virtual retinal display (VRD) is a personal display device under development at the University of Washington's Human Interface Technology Laboratory. With this technology, a display is scanned directly onto the retina of a viewer's eye. The viewer sees what appears to be a conventional display floating in space in front of them.[45]


The EyeTap (also known as Generation-2 Glass[46]) captures rays of light that would otherwise pass through the center of a lens of an eye of the wearer, and substitutes synthetic computer-controlled light for each ray of real light. The Generation-4 Glass[46] (Laser EyeTap) is similar to the VRD (i.e. it uses a computer controlled laser light source) except that it also has infinite depth of focus and causes the eye itself to, in effect, function as both a camera and a display, by way of exact alignment with the eye, and resynthesis (in laser light) of rays of light entering the eye.[47]


Handheld displays employ a small display that fits in a user's hand. All handheld AR solutions to date opt for video see-through. Initially handheld AR employed fiducial markers,[48] and later GPS units and MEMS sensors such as digital compasses and six degrees of freedom accelerometergyroscope. Today SLAM markerless trackers such as PTAM are starting to come into use. Handheld display AR promises to be the first commercial success for AR technologies. The two main advantages of handheld AR is the portable nature of handheld devices and ubiquitous nature of camera phones. The disadvantages are the physical constraints of the user having to hold the handheld device out in front of them at all times as well as distorting effect of classically wide-angled mobile phone cameras when compared to the real world as viewed through the eye.[49] Such examples as Pokémon Go and Ingress utilize an Image Linked Map (ILM) interface, where approved geotagged locations appear on a stylized map for the user to interact with.[50]


Spatial Augmented Reality (SAR) augments real world objects and scenes without the use of special displays such as monitors, head mounted displays or hand-held devices. SAR makes use of digital projectors to display graphical information onto physical objects. The key difference in SAR is that the display is separated from the users of the system. Because the displays are not associated with each user, SAR scales naturally up to groups of users, thus allowing for collocated collaboration between users.

Examples include shader lamps, mobile projectors, virtual tables, and smart projectors. Shader lamps mimic and augment reality by projecting imagery onto neutral objects, providing the opportunity to enhance the object’s appearance with materials of a simple unit- a projector, camera, and sensor.

Other applications include table and wall projections. One innovation, the Extended Virtual Table, separates the virtual from the real by including beam-splitter mirrors attached to the ceiling at an adjustable angle.[51] Virtual showcases, which employ beam-splitter mirrors together with multiple graphics displays, provide an interactive means of simultaneously engaging with the virtual and the real. Many more implementations and configurations make spatial augmented reality display an increasingly attractive interactive alternative.

A SAR system can display on any number of surfaces of an indoor setting at once. SAR supports both a graphical visualisation and passive haptic sensation for the end users. Users are able to touch physical objects in a process that provides passive haptic sensation.[7][52][53][54]


Modern mobile augmented-reality systems use one or more of the following tracking technologies: digital cameras and/or other optical sensors, accelerometers, GPS, gyroscopes, solid state compasses, RFID and wireless sensors. These technologies offer varying levels of accuracy and precision. Most important is the position and orientation of the user's head. Tracking the user's hand(s) or a handheld input device can provide a 6DOF interaction technique.[55][56]

Input devices

Techniques include speech recognition systems that translate a user's spoken words into computer instructions and gesture recognition systems that can interpret a user's body movements by visual detection or from sensors embedded in a peripheral device such as a wand, stylus, pointer, glove or other body wear.[57][58][59][60] Some of the products which are trying to serve as a controller of AR Headsets include Wave by Seebright Inc. and Nimble by Intugine Technologies.


The computer analyzes the sensed visual and other data to synthesize and position augmentations.

Software and algorithms

A key measure of AR systems is how realistically they integrate augmentations with the real world. The software must derive real world coordinates, independent from the camera, from camera images. That process is called image registration which uses different methods of computer vision, mostly related to video tracking.[61][62] Many computer vision methods of augmented reality are inherited from visual odometry. Usually those methods consist of two parts.

First detect interest points, or fiducial markers, or optical flow in the camera images. First stage can use feature detection methods like corner detection, blob detection, edge detection or thresholding and/or other image processing methods.[63][64] The second stage restores a real world coordinate system from the data obtained in the first stage. Some methods assume objects with known geometry (or fiducial markers) present in the scene. In some of those cases the scene 3D structure should be precalculated beforehand. If part of the scene is unknown simultaneous localization and mapping (SLAM) can map relative positions. If no information about scene geometry is available, structure from motion methods like bundle adjustment are used. Mathematical methods used in the second stage include projective (epipolar) geometry, geometric algebra, rotation representation with exponential map, kalman and particle filters, nonlinear optimization, robust statistics.

Augmented Reality Markup Language (ARML) is a data standard developed within the Open Geospatial Consortium (OGC),[65] which consists of an XML grammar to describe the location and appearance of virtual objects in the scene, as well as ECMAScript bindings to allow dynamic access to properties of virtual objects.

To enable rapid development of Augmented Reality Application, some software development kits (SDK) have emerged.[66][67] A few SDK such as CloudRidAR[68] leverage cloud computing for performance improvement. Some of the well known AR SDKs are offered by Vuforia,[69] ARToolKit, Catchoom CraftAR[70] Mobinett AR,[71] Wikitude,[72] Blippar[73] Layar,[74] and Meta.[75][76]


Augmented reality has many applications. First used for military, industrial, and medical applications, it has also been applied to commercial and entertainment areas.[77]


In 2011, there were works using AR poetry made by ni ka from the Sekai Camera in Japan, Tokyo. The rose of these works come from Paul Celan, "Die Niemandsrose", and express the mourning of 3.11, 2011 Tōhoku earthquake and tsunami.[78][79][80][81]


AR can be used to aid archaeological research, by augmenting archaeological features onto the modern landscape, enabling archaeologists to formulate conclusions about site placement and configuration.[82]

Another application given to AR in this field is the possibility for users to rebuild ruins, buildings, landscapes or even ancient characters as they formerly existed.[83][84][85]


AR can aid in visualizing building projects. Computer-generated images of a structure can be superimposed into a real life local view of a property before the physical building is constructed there; this was demonstrated publicly by Trimble Navigation in 2004. AR can also be employed within an architect's work space, rendering into their view animated 3D visualizations of their 2D drawings. Architecture sight-seeing can be enhanced with AR applications allowing users viewing a building's exterior to virtually see through its walls, viewing its interior objects and layout.[86][87][88]

Visual art

AR technology has helped disabled individuals create visual art by using eye tracking to translate a user's eye movements into drawings on a screen.[89] An item such as a commemorative coin can be designed so that when scanned by an AR-enabled device it displays additional objects and layers of information that were not visible in a real world view of it.[90][91] In 2013, L'Oreal used CrowdOptic technology to create an augmented reality at the seventh annual Luminato Festival in Toronto, Canada.[33]

AR in visual art opens the possibility of multidimensional experiences and interpretations of reality. Augmenting people, objects, and landscapes is becoming an art form in itself. In 2011, artist Amir Bardaran's Frenchising the Mona Lisa infiltrates Da Vinci's painting using an AR mobile application called Junaio. Aim a Junaio loaded smartphone camera at any image of the Mona Lisa and watch as Leonardo's subject places a scarf made of a French flag around her head.[92] The AR app allows the user to train his or her smartphone on Da Vinci's Mona Lisa and watch the mysterious Italian lady loosen her hair and wrap a French flag around her in the form a (currently banned) Islamic hijab.[93]

iGreet's augmented reality greeting card suddenly becomes alive and hidden digital content appears when being viewed through the app.

Greeting cards

AR technology has been used in conjunction with greeting cards. They can be implemented with digital content which users are able to discover by viewing the illustrations with certain mobile applications or devices using augmented reality technology. The digital content could be 2D & 3D animations, standard video and 3D objects with which the users can interact.

In 2015, the Bulgarian startup iGreet developed its own AR technology and used it to make the first premade “live” greeting card. It looks like traditional paper card, but contains hidden digital content which only appears when users scan the greeting card with the iGreet app.[94][95]


AR can enhance product previews such as allowing a customer to view what's inside a product's packaging without opening it.[96] AR can also be used as an aid in selecting products from a catalog or through a kiosk. Scanned images of products can activate views of additional content such as customization options and additional images of the product in its use.[97][98] AR is used to integrate print and video marketing. Printed marketing material can be designed with certain "trigger" images that, when scanned by an AR enabled device using image recognition, activate a video version of the promotional material. A major difference between Augmented Reality and straight forward image recognition is that you can overlay multiple media at the same time in the view screen, such as social media share buttons, in-page video even audio and 3D objects. Traditional print only publications are using Augmented Reality to connect many different types of media.[99][100][101][102][103]


With the continual improvements to GPS accuracy, businesses are able to use augmented reality to visualize georeferenced models of construction sites, underground structures, cables and pipes using mobile devices.[104] Augmented reality is applied to present new projects, to solve on-site construction challenges, and to enhance promotional materials.[105] Examples include the Daqri Smart Helmet, an Android-powered hard hat used to create augmented reality for the industrial worker, including visual instructions, real time alerts, and 3D mapping.[106]

Following the Christchurch earthquake, the University of Canterbury released CityViewAR, which enabled city planners and engineers to visualize buildings that had been destroyed.[107] Not only did this provide planners with tools to reference the previous cityscape, but it also served as a reminder to the magnitude of the devastation caused, as entire buildings had been demolished.


App iSkull,[108] an augmented human skull for education (iOS OS)
App iWow,[109] a mobile device-based augmented reality enhanced world globe

Augmented reality applications can complement a standard curriculum. Text, graphics, video and audio can be superimposed into a student’s real time environment. Textbooks, flashcards and other educational reading material can contain embedded “markers” that, when scanned by an AR device, produce supplementary information to the student rendered in a multimedia format.[110][111][112] Students can participate interactively with computer generated simulations of historical events, exploring and learning details of each significant area of the event site.[113] On higher education, there are some applications that can be used. For instance, Construct3D, a Studierstube system, allows students to learn mechanical engineering concepts, math or geometry. This is an active learning process in which students learn to learn with technology.[114] AR can aid students in understanding chemistry by allowing them to visualize the spatial structure of a molecule and interact with a virtual model of it that appears, in a camera image, positioned at a marker held in their hand.[115] It can also enable students of physiology to visualize different systems of the human body in three dimensions.[116] Augmented reality technology also permits learning via remote collaboration, in which students and instructors not at the same physical location can share a common virtual learning environment populated by virtual objects and learning materials and interact with another within that setting.[117]

This resource could also be of advantage in primary school. Children can learn through experiences, and visuals can be used to help them learn. For instance, they can learn new knowledge about astronomy, which can be difficult to understand, and children might better understand the solar system when using AR devices and being able to see it in 3D. Further, learners could change the illustrations in their science books by using this resource.
For teaching anatomy, teachers could visualize bones and organs using augmented reality to display them on the body of a person.

Mobile apps using augmented reality are emerging in the classroom. The mix of real life and virtual reality displayed by the apps using the mobile phone's camera allows information to be manipulated and seen like never before. Many such apps have been designed to create a highly engaging environment and transform the learning experience. Examples of the mobile apps that leverage augmented reality to aid learning, include SkyView for studying astronomy,[118] and AR Circuits for building simple electric circuits.[119]

Emergency management/search and rescue

Augmented reality systems are used in public safety situations – from super storms to suspects at large. Two interesting articles from Emergency Management magazine discuss the power of the technology for emergency management. The first is "Augmented Reality--Emerging Technology for Emergency Management" by Gerald Baron.[120] Per Adam Crowe: "Technologies like augmented reality (ex: Google Glass) and the growing expectation of the public will continue to force professional emergency managers to radically shift when, where, and how technology is deployed before, during, and after disasters."[121]

Another example, a search aircraft is looking for a lost hiker in rugged mountain terrain. Augmented reality systems provide aerial camera operators with a geographic awareness of forest road names and locations blended with the camera video. As a result, the camera operator is better able to search for the hiker knowing the geographic context of the camera image. Once found, the operator can more efficiently direct rescuers to the hiker's location.[122]


Since the 1970s and early 1980s, Steve Mann has been developing technologies meant for everyday use i.e. "horizontal" across all applications rather than a specific "vertical" market. Examples include Mann's "EyeTap Digital Eye Glass", a general-purpose seeing aid that does dynamic-range management (HDR vision) and overlays, underlays, simultaneous augmentation and diminishment (e.g. diminishing the electric arc while looking at a welding torch).[123]

Video games

Merchlar's mobile game Get On Target uses a trigger image as fiducial marker

Augmented reality allows video game players to experience digital game play in a real world environment. Companies and platforms like Niantic and LyteShot emerged as augmented reality gaming creators.[124][125] Niantic is notable for releasing the record-breaking Pokémon Go game.[126] However, though the popular press overwhelmingly calls Pokémon Go an augmented reality game, most experts in AR and experts in game development agree that it is best described as a location-based game.[127][128][129][130][131][132][133][134][135]

Industrial design

AR can help industrial designers experience a product's design and operation before completion. Volkswagen uses AR for comparing calculated and actual crash test imagery.[136] AR can be used to visualize and modify a car body structure and engine layout. AR can also be used to compare digital mock-ups with physical mock-ups for finding discrepancies between them.[137][138]


Since 2005, a device that films subcutaneous veins, processes and projects the image of the veins onto the skin has been used to locate veins. This device is called a near-infrared vein finder.[139][140]

Augmented Reality can provide the surgeon with information, which are otherwise hidden, such as showing the heartbeat rate, the blood pressure, the state of the patient’s organ, etc. AR can be used to let a doctor look inside a patient by combining one source of images such as an X-ray with another such as video.

Examples include a virtual X-ray view based on prior tomography or on real time images from ultrasound and confocal microscopy probes,[141] visualizing the position of a tumor in the video of an endoscope,[142] or radiation exposure risks from X-ray imaging devices.[143][144] AR can enhance viewing a fetus inside a mother's womb.[145] It has been used for cockroach phobia treatment.[146] Patients wearing augmented reality glasses can be reminded to take medications.[147]


In 2014 the company L'Oreal Paris started developing a smartphone and tablet application called "Makeup Genius", which lets users try out make-up and beauty styles utilizing the front-facing camera of the endpoint and its display.[148]

Spatial immersion and interaction

Augmented reality applications, running on handheld devices utilized as virtual reality headsets, can also digitalize human presence in space and provide a computer generated model of them, in a virtual space where they can interact and perform various actions. Such capabilities are demonstrated by "Project Anywhere" developed by a postgraduate student at ETH Zurich, which was dubbed as an "out-of-body experience".[149][150][151]


In combat, AR can serve as a networked communication system that renders useful battlefield data onto a soldier's goggles in real time. From the soldier's viewpoint, people and various objects can be marked with special indicators to warn of potential dangers. Virtual maps and 360° view camera imaging can also be rendered to aid a soldier's navigation and battlefield perspective, and this can be transmitted to military leaders at a remote command center.[152]

An interesting application of AR occurred when Rockwell International created video map overlays of satellite and orbital debris tracks to aid in space observations at Air Force Maui Optical System. In their 1993 paper "Debris Correlation Using the Rockwell WorldView System" the authors describe the use of map overlays applied to video from space surveillance telescopes. The map overlays indicated the trajectories of various objects in geographic coordinates. This allowed telescope operators to identify satellites, and also to identify – and catalog – potentially dangerous space debris.[153]

Starting in 2003 the US Army integrated the SmartCam3D augmented reality system into the Shadow Unmanned Aerial System to aid sensor operators using telescopic cameras to locate people or points of interest. The system combined both fixed geographic information including street names, points of interest, airports and railroads with live video from the camera system. The system offered "picture in picture" mode that allows the system to show a synthetic view of the area surrounding the camera's field of view. This helps solve a problem in which the field of view is so narrow that it excludes important context, as if "looking through a soda straw". The system displays real-time friend/foe/neutral location markers blended with live video, providing the operator with improved situation awareness.

Researchers at USAF Research Lab (Calhoun, Draper et al.) found an approximately two-fold increase in the speed at which UAV sensor operators found points of interest using this technology.[154] This ability to maintain geographic awareness quantitatively enhances mission efficiency. The system is in use on the US Army RQ-7 Shadow and the MQ-1C Gray Eagle Unmanned Aerial Systems.


LandForm video map overlay marking runways, road, and buildings during 1999 helicopter flight test

AR can augment the effectiveness of navigation devices. Information can be displayed on an automobile's windshield indicating destination directions and meter, weather, terrain, road conditions and traffic information as well as alerts to potential hazards in their path.[155][156][157] Aboard maritime vessels, AR can allow bridge watch-standers to continuously monitor important information such as a ship's heading and speed while moving throughout the bridge or performing other tasks.[158]

The NASA X-38 was flown using a Hybrid Synthetic Vision system that overlaid map data on video to provide enhanced navigation for the spacecraft during flight tests from 1998 to 2002. It used the LandForm software and was useful for times of limited visibility, including an instance when the video camera window frosted over leaving astronauts to rely on the map overlays.[159] The LandForm software was also test flown at the Army Yuma Proving Ground in 1999. In the photo at right one can see the map markers indicating runways, air traffic control tower, taxiways, and hangars overlaid on the video.[160]

Office workplace

AR can help facilitate collaboration among distributed team members in a work force via conferences with real and virtual participants. AR tasks can include brainstorming and discussion meetings utilizing common visualization via touch screen tables, interactive digital whiteboards, shared design spaces, and distributed control rooms.[161][162][163]

Sports and entertainment

AR has become common in sports telecasting. Sports and entertainment venues are provided with see-through and overlay augmentation through tracked camera feeds for enhanced viewing by the audience. Examples include the yellow "first down" line seen in television broadcasts of American football games showing the line the offensive team must cross to receive a first down. AR is also used in association with football and other sporting events to show commercial advertisements overlaid onto the view of the playing area. Sections of rugby fields and cricket pitches also display sponsored images. Swimming telecasts often add a line across the lanes to indicate the position of the current record holder as a race proceeds to allow viewers to compare the current race to the best performance. Other examples include hockey puck tracking and annotations of racing car performance and snooker ball trajectories.[61][164]

AR can enhance concert and theater performances. For example, artists can allow listeners to augment their listening experience by adding their performance to that of other bands/groups of users.[165][166][167]

The gaming industry has benefited a lot from the development of this technology. A number of games have been developed for prepared indoor environments. Early AR games also include AR air hockey, collaborative combat against virtual enemies, and an AR-enhanced pool games. A significant number of games incorporate AR in them and the introduction of the smartphone has made a bigger impact.[168][169]

Task support

Complex tasks such as assembly, maintenance, and surgery can be simplified by inserting additional information into the field of view. For example, labels can be displayed on parts of a system to clarify operating instructions for a mechanic who is performing maintenance on the system.[170][171] Assembly lines gain many benefits from the usage of AR. In addition to Boeing, BMW and Volkswagen are known for incorporating this technology in their assembly line to improve their manufacturing and assembly processes.[172][173][174] Big machines are difficult to maintain because of the multiple layers or structures they have. With the use of AR the workers can complete their job in a much easier way because AR permits them to look through the machine as if it was with x-ray, pointing them to the problem right away.[175]


Weather visualizations were the first application of augmented reality to television. It has now become common in weathercasting to display full motion video of images captured in real-time from multiple cameras and other imaging devices. Coupled with 3D graphics symbols and mapped to a common virtual geo-space model, these animated visualizations constitute the first true application of AR to TV.

Augmented reality has also become common in sports telecasting. Sports and entertainment venues are provided with see-through and overlay augmentation through tracked camera feeds for enhanced viewing by the audience. Examples include the yellow "first down" line seen in television broadcasts of American football games showing the line the offensive team must cross to receive a first down. AR is also used in association with football and other sporting events to show commercial advertisements overlaid onto the view of the playing area. Sections of rugby fields and cricket pitches also display sponsored images. Swimming telecasts often add a line across the lanes to indicate the position of the current record holder as a race proceeds to allow viewers to compare the current race to the best performance. Other examples include hockey puck tracking and annotations of racing car performance and snooker ball trajectories.[176][177]

Augmented reality is starting to allow Next Generation TV viewers to interact with the programs they are watching. They can place objects into an existing program and interact with these objects, such as moving them around. Avatars of real persons in real time who are also watching the same program.[178]

Tourism and sightseeing

Augmented reality applications can enhance a user's experience when traveling by providing real time informational displays regarding a location and its features, including comments made by previous visitors of the site. AR applications allow tourists to experience simulations of historical events, places and objects by rendering them into their current view of a landscape.[179][180][181] AR applications can also present location information by audio, announcing features of interest at a particular site as they become visible to the user.[182][183][184]


AR systems can interpret foreign text on signs and menus and, in a user's augmented view, re-display the text in the user's language. Spoken words of a foreign language can be translated and displayed in a user's view as printed subtitles.[185][186][187]


Usage of AR is increasing in the field of marketing. Games like Pokémon Go have helped businesses increase their number of footfalls to their shops. For clothing, accessory, and makeup companies, AR presents a new way to show customers what it will be like to use or wear their products. Virtual dressing rooms are a recent trend in e-commerce.[188]

Privacy concerns

The concept of modern augmented reality depends on the ability of the device to record and analyze the environment in real time. Because of this, there are potential legal concerns over privacy. While the First Amendment to the United States Constitution allows for such recording in the name of public interest, the constant recording of an AR device makes it difficult to do so without also recording outside of the public domain. Legal complications would be found in areas where a right to certain amount of privacy is expected or where copyrighted media are displayed. In terms of individual privacy, there exists the ease of access to information that one should not readily possess about a given person. This is accomplished through facial recognition technology. Assuming that AR automatically passes information about persons that the user sees, there could be anything seen from social media, criminal record, and marital status.[189]

Notable researchers


See also


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External links

Augmented reality at DMOZ

Media related to Augmented reality at Wikimedia Commons

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