From urban planning and emergency training to Pokémon Go: applications of virtual reality GIS (VRGIS) and augmented reality GIS (ARGIS) in personal, public and environmental health
© The Author(s) 2017
Received: 3 February 2017
Accepted: 14 February 2017
Published: 20 February 2017
The latest generation of virtual and mixed reality hardware has rekindled interest in virtual reality GIS (VRGIS) and augmented reality GIS (ARGIS) applications in health, and opened up new and exciting opportunities and possibilities for using these technologies in the personal and public health arenas. From smart urban planning and emergency training to Pokémon Go, this article offers a snapshot of some of the most remarkable VRGIS and ARGIS solutions for tackling public and environmental health problems, and bringing about safer and healthier living options to individuals and communities. The article also covers the main technical foundations and issues underpinning these solutions.
Virtual reality GIS (VRGIS) is decades old. It has been around since the 1990s [1, 2]. (One may also add mixed reality GIS [MRGIS] and augmented reality GIS [ARGIS] as closely related terms and concepts.) But more recent developments in technologies, such as big data, augmented reality, graphic processing units (GPUs) and the Internet of Things (IoT), have helped provide superior implementations, higher performance and better human–computer interactive modes for VRGIS, which enabled its use in solving more complex, practical and real-world problems.
VRGIS technology is a combination of virtual reality (VR) and GIS technologies, integrating three-dimensional GIS (3D GIS) and Internet-oriented GIS (Web GIS). VRGIS technology adopts different human–computer interaction devices . It establishes a three-dimensional (3D) model in a virtual environment, and operates via personal computers, mobile devices and smart glasses. Newer generations of low-cost hardware technologies and ubiquitous devices are significantly reducing the threshold of VRGIS adoption and acceptance by various research communities and user groups .
A quick overview of recent VRGIS and ARGIS/MRGIS applications in health and public health
Smart healthy cities (urban and environmental planning)
In the realm of smart healthy cities [11, 12], VRGIS offers unique simulation and visualisation opportunities for use in urban and environmental planning, as well as in impact assessment. Esri CityEngine, which is used in urban planning and design [13, 14], has been successfully coupled with Oculus Rift to produce a powerful VRGIS solution for more participatory, smarter urban planning [15, 16]. Thanks to its powerful immersive visualisation approach, the platform can be used to better engage with, and collect the opinion of, stakeholders and citizens/communities about any proposed future city plans affecting the places they live and work in. For example, neighbourhood walkability can be tested (bike paths, walking paths, etc.), and levels of city and street noise at various times of the day can be simulated (if combined with a 3D spatial audio solution and appropriate models of city noise sources and levels). Readers wishing to get some rough idea of what an Esri CityEngine with Oculus Rift experience is like (without the price tag attached to it) can try out Google Street View under Cardboard . A closer look at ‘VRGIS for smart cities’ follows later in this article.
Mass casualty education and emergency training
VRGIS can also be used for mass casualty education and in military and emergency training, as part of a city or country’s emergency preparedness provisions. Evacuation and response scenarios in natural and man-made disasters can be simulated (planned and rehearsed) in an immersive 3D VR environment using GIS data and real city models. Realistic and immersive virtual accident scenes can be offered for trainees to interact with at a fraction of the cost of a comparable large-scale conventional drill in the physical (real) world [18–20].
Personal health and well-being (promotion of physical activity and reduction of stress)
Like very many other games, Pokémon Go’s somewhat fading user interest and declining user base was to be expected, particularly when accounting for the initial media hype that drove many people to the game only temporarily, to satisfy their curiosity . Nevertheless, updates to Pokémon Go  and merchandise for further monetisation of the game, such as the Pokémon Go Plus wearable , are still being released as of January 2017. But the successive updates of the game have also made it increasingly “heavier” and bloated, and consequently slower or totally unplayable on less powerful, low-end devices. For example, while the Apple iPhone 4S was able to run the earliest versions of Pokémon Go almost flawlessly, newer versions of the game (as of January 2017) are unplayable on that handset, crashing with each attempt to run the game. Areas for improvement in future editions of Pokémon Go and similar games include ‘game loading times’ (need to be faster) and ‘battery drain’ (needs to be reduced).
Furthermore, games are in some ways like fashion, and many people are now looking forward to the next geosocial game to follow after Pokémon Go. Most people will get bored of a game at some point if not after a couple of months then after 4 or 6 months. Furthermore, Pokémon Go has a finite number of levels after which the player would be considered to have completed it. Most players will never reach beyond a certain level. They will give up, either as the game gets much harder or as its monetisation kicks in (when progression becomes strictly tied to in-game purchases or extremely slow without them to force players to buy something with real currency). But to play an exergame for even such a limited duration of a few or several months is still beneficial, worthy and commendable (though some Pokémon Go players were cheating to progress in-game instead of doing real physical activity —tying future exergames to heart rate and other relevant body sensors can help minimise this kind of cheating and provide better feedback to players).
Building on his earlier concept of a Kinect-based NUI (natural user interface) for 3-D virtual globe navigation , Kamel Boulos (first author on this article) is further proposing a stationary bike or treadmill coupled with an immersive VR (Cardboard or better) version of Google Street View/Google Earth, whereby the player’s steps are translated to (or rewarded by) entertaining and culturally rich virtual promenades along the Champs-Élysées in Paris, France (for example), and other interesting landmarks around the world. The changing scenery (virtual tourism) would serve as a stimulus or motive for the player to continue exercising on the stationary bike or treadmill without getting bored or giving up the activity too soon. A social component (over the Internet) can be added, whereby other players (friends and family members running or biking on similar stationary devices in the same building or elsewhere) can be “projected” into the same immersive space, and communication via voice chat enabled, so that the player is not alone and is joined by other players during these virtual promenades (another motive for the player to continue exercising). Spatialised 3D audio of ambient sounds can further bring the streets, cities and countryside in the immersive virtual environment to life. This type of VRGIS involving physical activity would not just benefit a person’s physical health, but also the player’s mental health, helping the person better manage her/his stress levels. Virtual sunshine in such immersive environments might also exert some additional mood lifting effects , but research is needed to establish whether or not the same sunlight-induced effects on serotonin and melatonin regulation apply in immersive VR. A 15-min break involving the above setup during a busy and stressful office day can prove helpful and beneficial to employees’ health, particularly in those circumstances in which there is no convenient access to suitable nearby outdoor recreational places for walking, jogging, or cycling (e.g., during those dark, cloudy and rainy winter days).
Healthier and safer living (car accident prevention, healthy food outlet suggestions, etc.)
Another noteworthy ARGIS application that can help improve road safety and prevent car accidents (think ‘smart cars’, a component of smart healthy cities) is iOnRoad, available on Android and iOS [37, 38]. One can also think of a useful ARGIS app that augments nearby restaurants located on a map or camera photo with healthy (and non-healthy) eating information, and can also tailor recommendations based on user’s health condition, e.g., offer special restaurant recommendations for people with diabetes (cf. the Layar layer for recommending top-rated, nearby Asian restaurants in and round Los Angeles, USA, demonstrated in ).
The remainder of this article covers the main technical foundations and issues underpinning VRGIS solutions today, with some emphasis on VRGIS-based application tools for smart cities.
Characteristics of VRGIS
Online virtual worlds and 3D stereoscopic solutions (considered as foundation technologies for VRGIS and ARGIS) have a great potential for being used for research purposes in social, behavioural, economic and human-centred computer sciences, with many applications in the public and environmental health arenas [40–44]. In geography, including human and health geography, virtual worlds have been successfully developed as assistant tools, facilitating the creation of studies and the understanding of the theories and practices of geography [45–49].
VRGIS can be seen as an enhanced version of geographical virtual worlds. VRGIS, which merges 3D stereoscopic, VR and GIS technologies, uses footprint files in GIS format for 3D reconstruction , and expresses GIS information in the VR domain based on a coupled system; the VRGIS method consists of GIS and VR modules . When operating VRGIS in the virtual environment, users can interact with the system and get feedback from it using different sensing devices. The external world and the system can form a feedback loop through sensing devices.
The main characteristics of VR technology are (1) interactivity—the extent to which the users can operate and get feedback in the simulated environment; (2) existence—the extent of the user’s presence in the simulation environment; (3) autonomy—the movement degree of objects in the virtual environment based on physical laws; and (4) multiple perceptibility —compared with traditional GIS, VRGIS’ main strength lies in the enhanced interaction between the users and the system, which improves the user’s experience making it more immersive.
Thanks to modern multimedia, mass storage technologies and linkages through broadband networks, VRGIS is able to combine remote sensing (RS), aerial photogrammetry, GPS, GIS, city simulation, virtual displays and other technologies to conduct detailed 3D descriptions of a multi-resolution, multi-scale complex geographical environment, with multiple spatio-temporal categories. This is where past, present, and future geographical environments are rendered in a realistic and immersive manner with digital virtual reality via computer networks and other information technologies [51, 52].
Key issues of present-day VRGIS
Modelling technology in the dynamic environment
The virtual worlds that are explored in VRGIS range from natural landscapes to urban cityscapes. Many VRGIS applications require the worlds to have a certain amount of detail in order to be useful. City planners, for example, need to identify the exact 3D shape of each building to check if several regulations, such as protected views in a city, are met. Energy companies responsible for planning solar installations for greener and more sustainable environments may be interested in the size and slant of city roofs, including the occlusion of roofs by nearby buildings. To meet these requirements, the 3D models that represent these environments should be large and detailed, which makes them extremely complex.
Traditionally, there are two main technical challenges in handling this complexity. Firstly, as VR is required to be interactive, the models should be displayed in real-time with over 30 frames per second (fps) and ideally at about 60 fps to reduce the input lag experienced by users [53, 54]. Rendering technology has matured over the past decades to a point where a non-photorealistic display of these complex models at the interactive frame rates is achievable, mainly by organising the models into spatial hierarchies [55, 56], as implemented, for example, in Cesium 3D Tiles , and by decreasing the level of detail in the distant geometry . Web-based technologies for rendering [59, 60] and 3D modelling [61–63] have been on the rise recently, and some of them are specifically designed for 3D GIS visualisations .
Secondly, it is difficult to create the large amounts of geometric data that are required for these models in a reasonable amount of time. Especially for detailed urban environments, this poses a great challenge that has gained much attention in recent computer graphics research . Data can be obtained from satellite, aerial or street-level images using photogrammetry [65–68], range scanners such as LIDAR (Light Detection and Ranging) [69, 70], or through manual modelling to either improve existing data [71, 72] or to create data from scratch [73, 74], possibly for a planned project where no real-world objects are available. These approaches vary in the fidelity of the generated data, the required amount of user interaction and the availability of higher-level information in the reconstructed models. High-level information may, for example, be semantic labels for objects such as roofs and doors that may be useful Building Information Modelling (BIM), or information that may help to modify buildings efficiently, such as a procedural model of a building or other semantically meaningful parameterisations. Typically, approaches that require little user interaction tend to have lower-fidelity results, with less high-level information. The most prominent example of an approach that requires little user interaction is probably Google Earth , which discontinued manual building modelling with Google Building Maker  in favour of a more automatic photogrammetric reconstruction. The methods that require more user interaction lie on the other side of the spectrum, such as procedural modelling programs, e.g., CityEngine [13, 77], and traditional polygon modelling programs, e.g., Google SketchUp , AutoCAD  and OnShape . Examples of companies that do urban reconstruction with more manual modelling than Google Earth are Esri  and VertexModeling .
More recent developments have focused on facilitating manual modelling of complex geometry by making use of higher-level model structure [73, 74, 82, 83], or introducing manual guidance into automatic reconstruction to achieve higher-quality results [71, 72, 84]. These approaches promise a more favourable trade-off between the required amount of user interaction and the resulting model quality, but have not yet established themselves in the industry.
‘Wikification of GIS by the masses’ (WGM) , also known as Volunteered Geographic Information (VGI) , is the specific embodiment of crowdsourcing approach in GIS. Following the emergence of the Social Web (or Web 2.0) and improvements in mobile devices, the growth of spatial data is no longer limited to activities carried out by specialist organisations. A paradigm shift emerged, whereby individuals and informal institutions can now collect and disseminate their own geographical knowledge. Users contribute to mapping projects for a variety of reasons, including learning about, and sharing, local knowledge, supporting the general principle of the free availability of mapping data, and for the attached importance of, and recognition by, the community they serve . Official ‘mapping party’ events are also organised in different locations around the world, inviting local users to socialise and engage with newcomers as they map .
User-generated maps from projects such as OpenStreetMap (OSM) have been recognised for their impressive levels of detail , and have emerged as an important source of information for supporting disaster management , among other applications. However, this progress in user-generated maps has largely been limited to 2D (two-dimensional) maps, though some user-generated 3D models are available on Google Earth . Researchers are currently exploring the potential of extending user-generated maps to the next dimension, that of 3D mapping [50, 92–94], and new tools are being created to support the generation and consumption of VR maps, e.g., Google Earth VR .
Collaborative mapping in 3D is more difficult than in 2D, because it requires users to have basic knowledge and skills of 3D modelling. Also WGM data are heterogeneous in quality, completeness and accuracy, which makes 3D reconstruction difficult . Yet, if these challenges can be overcome, the idea of a comprehensive user-generated 3D map of the world presents many exciting possibilities. For example, a 3D model of the city of London could be a shared resource for planning, tourism and heritage, or an extremely large user-created fantasy virtual world that can underpin the next generation of massive-multiplayer games .
System integration and interaction technology
GIS is not only a system, but also science [96, 97]. The geographic information provides multi-source, multi-dimensional, multi-scale, multi-spatio-temporal model and perceptual details. Data fusion and integration technologies are of great importance to the system. GIS data share some ‘big data’ characteristics, such as being large scale, diverse, of varying predictability and often available in real-time . With regard to big data, the system integration technology mainly involves the integration of spatial data, storage management model and synchronisation technology , and user space positioning technology and human data . These technologies can be summarised as network and communication (NC) technology and human–computer interaction (HCI) technology. NC focuses on system integration, while HCI focuses on system interaction, with both technology classes bridging the gap between users and VRGIS.
Network and communication technology
Traditional distributed VRGIS uses the network to connect users in the virtual environment and carry out distributed data sharing and multi-user real-time interaction [101, 102]. The Internet of Things  utilises a new generation of sensors to link the real objects in the physical world with the Internet according to set agreements involving information exchange and communication, so as to achieve intelligent identification, positioning, tracking, monitoring and resource management. This leads to the conversion of VRGIS from ‘digitisation’ to ‘intelligence’. Meanwhile, cloud computing technology provides a more powerful computing power for the analysis, prediction, abstraction and visualisation of geographic data.
Human–computer interaction interface
Spatial representations have gone beyond the visual . The earliest VR used Cave Automatic Virtual Environment (CAVE) and other large-scale 3D display technology along with 3D glasses  to provide users with a sense of immersion . Traditional interaction techniques, such as data gloves, have their disadvantages and can be inconvenient to use. They have low resolution, small scope of action, and can cause serious delay. The latest interactive devices and technologies improved the tracking range and accuracy of the virtual reality [106, 107] by simplifying the 3D display device structure and reducing cost. Also, the enhancements provided better quality and superior visual effect of the 3D image [108, 109], along with improving user’s experience. For instance, Oculus Rift can be connected to PC (personal computer) games, providing convenient visual immersion for players. Augmented and mixed reality technologies and devices such as Google Glass (discontinued in 2015)  and Microsoft HoloLens  facilitate users’ interaction with real (physical) and virtual worlds, seamlessly merging and integrating the two realms.
VRGIS-based application tools for smart cities
Many users are satisfied with the realistic visual effects and immersive interactive experience of the latest VRGIS developments. The key to a successful VRGIS application lies in identifying suitable application areas , and fully recognising the efficacy of VRGIS and the convenience it can provide to various fields . The design of well-tailored application tools requires not only familiarity with the feasibility of VRGIS implementation in the scenarios at hand, but also an in-depth understanding of the corresponding industrial demands. VRGIS experts carry out demand analyses and functional design of application tools to achieve the desired practical goals in each case, effectively improving labour efficiencies in the corresponding application domains [48, 112]. After the system implementation of VRGIS in a given field, effectiveness can be measured using appropriate human–computer interaction and usability testing methods to study users . Final judgments about the application are then made based on users’ feedback results [114, 115].
VRGIS has been widely applied in domains related to smart cities and urban management, such as traffic and transportation , e-government and e-business , ocean and island management [117–119], scenic area management , virtual community , geography education [122, 123], and underground pipeline management . Virtual geographies are currently being developed for several applications, including virtual cities, landscape visualisation, visualising past and future geographies, visualising abstract concepts and taking people on virtual field courses [125–127].
Traditional urban and environmental applications of VRGIS focus on the simulation of landscape structure ; geomorphological structure; geological structure; large-scale traffic and urban engineering structure; natural movements of the Earth system, such as volcanic eruptions, earthquake processes, flood disasters and other emergency cases; desertification and soil erosion processes in lakes, forests and other natural ecosystems; regional, urban and other ecological systems ; sustainable development of cities ; and transformation and planning of regions. In the context of smart cities, VRGIS has been applied to population management, traffic (congestion) prediction and mitigation, urban resource allocation, monitoring of water resources, environmental protection, disaster prevention, early warning systems and rescue planning operations.
In a modern smart city system, the most basic characteristic of VRGIS is its capacity to visualise 3D details. Users immersed in the virtual environment can test different possibilities and candidate locations for a given task or a new city development plan to decide on the best course of action to take [130, 131]. Planners of new buildings or other facilities can have a comprehensive view of their new development location from various perspectives, including surrounding and nearby buildings. Users, such as city managers, can see the actual landscape of streets, buildings and vehicles, and assess the number of buildings, congestion conditions and light exposure within the vicinity.
The core function of geographic information technology as decision support tool plays a key role in realising the full potential of smart cities and associated technologies, such as IoT [100, 131, 132]. Capitalising on the technology’s powerful spatio-temporal decision support affordances, users can interrogate the relevant GIS databases to analyse and display the distribution of business activities of interest, such as the positioning of public facilities, major pipelines and other useful information. An emergency alarm service enables the officers in charge to immediately obtain 3D images of areas requiring immediate attention for further processing. By properly integrating event information in the GIS database, city officers can see, and dynamically monitor, the location(s) of corresponding smart city object(s) attached to an event as it unfolds, such as specific building(s) or particular street(s) or crossing(s) in the case of a traffic jam.
The rapid developments in computer technology are opening up new application frontiers for VRGIS and ARGIS in the domains of personal, public and environmental health. When properly conceived and implemented, VRGIS and related technologies can serve as enablers of healthier and safer living for individuals and communities. IoT-driven smart cities benefit the most from the real-time, effective and highly integrated 3D visualisation of big (geo)data via VRGIS. VRGIS can assist in the analysis of the urban fabric and other related attributes, providing auxiliary methods for urban and environmental planning and design [133, 134]. The underpinning databases can be updated with 3D data at any time (even in real time), so as to reflect new urban plans and regional changes in a timely manner (or as they unfold in real time) via VRGIS, thus broadening the technology’s application prospects.
Looking at the future, there are virtually no limits to the possibilities of VRGIS and ARGIS applications in health and medicine. For example, GIS has traditionally been applied to features on the surface of the Earth, but it is also possible to apply the technology to anatomical features at the scale of the human body . In this respect, one may consider Royal Philips’ augmented-reality surgical navigation technology for image-guided spine, cranial and trauma surgery [136, 137] as an advanced and highly specialised form of ARGIS/MRGIS. News updates related to the topic of this article can be always accessed at .
MNKB conceived and edited the article, including the introduction, overview of recent VRGIS and ARGIS/MRGIS applications in health and public health, and conclusions, as well as Figs. 1 and 2. ZL, PG, CJ and AS contributed text on the technical issues underpinning VRGIS solutions today, particularly in the context of smart city applications, with additional input and pointers provided by MNKB. All authors read and approved the final manuscript.
The authors would like to thank the Open3D Project (EPSRC Grant EP/M013685/1).
MNKB is Editor-in-Chief of International Journal of Health Geographics.
Reference in the manuscript to any specific commercial product, process or service by trade name, trademark, manufacturer or otherwise does not necessarily constitute or imply its endorsement, recommendation or favouring by the authors or the entities they are affiliated to, and shall not be used for commercial advertising or product endorsement purposes.
Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
- Haklay ME. Virtual reality and GIS: applications, trends and directions. In: Fisher P, Unwin D, editors. Virtual reality in geography. London: CRC Press; 2001. p. 47–57. doi:10.1201/9780203305850.ch5.View ArticleGoogle Scholar
- Williams NA. Four-dimensional virtual reality GIS (4D VRGIS): research guidelines (Part IV, Chapter 16). In: Gittings B, editors. Innovations in GIS 6: integrating information infrastructures with GI technology. CRC Press, London; 1999, p. 198–211. https://goo.gl/hlHksS.
- Castelvecchi D. Low-cost headsets boost virtual reality’s lab appeal. Nature. 2016;533:153–4. doi:10.1038/533153a.View ArticlePubMedGoogle Scholar
- Google Daydream View VR—Live demonstration (online video). https://www.youtube.com/watch?v=uK7zCeKEFUM.
- Google Cardboard. https://vr.google.com/cardboard/.
- Microsoft HoloLens. https://www.microsoft.com/microsoft-hololens/en-gb.
- Robertson A. Microsoft announces new VR headsets for Windows 10, starting at $299. The Verge. 2016 Oct 26 (online). http://www.theverge.com/2016/10/26/13418156/microsoft-windows-10-holographic-virtual-reality-headset-announced-price.
- Valve and HTC Vive. https://www.vive.com/uk/.
- Facebook and Samsung Oculus Rift and Gear VR. https://www.oculus.com/.
- Sony PlayStation VR. https://www.playstation.com/en-gb/explore/playstation-vr/.
- Kamel Boulos MN, Tsouros AD, Holopainen A. ‘Social, innovative and smart cities are happy and resilient’: insights from the WHO EURO 2014 International Healthy Cities Conference. Int J Health Geogr. 2015;14:3. doi:10.1186/1476-072X-14-3.View ArticlePubMedPubMed CentralGoogle Scholar
- Kamel Boulos MN, Al-Shorbaji NM. On the Internet of Things, smart cities and the WHO Healthy Cities. Int J Health Geogr. 2014;13:10. doi:10.1186/1476-072X-13-10.View ArticlePubMedPubMed CentralGoogle Scholar
- Esri CityEngine. http://www.esri.com/software/cityengine.
- Esri CityEngine Trailer (online video). https://www.youtube.com/watch?v=aFRqSJFp-I0.
- First Time with the Oculus Rift (ESRI CityEngine SIGGRAPH ‘13—online video). https://www.youtube.com/watch?v=MAxKl4s_iRg.
- Esri CityEngine, Unity 4.0 and the Oculus Rift. http://www.zekiah.com/index.php?q=blog/2014/02/04/esri-cityengine-unity-40-and-oculus-rift.
- Orphanides KG. Google Street View adds full Cardboard VR support. Wired. 2015 Oct 13 (online). http://www.wired.co.uk/article/google-street-view-adds-full-cardboard-vr-support.
- Heyi W. Application of VRGIS in Intelligent Emergency Command System. Geospatial Information. 2014, 3 (online). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DXKJ201403035.htm.
- Lorenz D, Armbruster W, Vogelgesang C, Hoffmann H, Pattar A, Schmidt D, Volk T, Kubulus D. A new age of mass casuality education? The InSitu project: realistic training in virtual reality environments. Anaesthesist. 2016;65(9):703–9. doi:10.1007/s00101-016-0196-x (in German).View ArticlePubMedGoogle Scholar
- Kamel Boulos MN. Novel Emergency/Public Health Situation Rooms and More Using 4-D GIS. Proceedings of ISPRS WG IV/4 international workshop on virtual changing globe for visualisation and analysis (VCGVA2009): 27–28 October 2009; Wuhan University, Wuhan, Hubei (ISPRS Archives, Volume XXXVIII, Part 4/W10, ISSN No: 1682-1777). http://www.isprs.org/proceedings/XXXVIII/4-W10/papers/VCGVA2009_03608_Boulos.pdf.
- Pokémon Go. http://www.pokemongo.com/.
- Kamel Boulos MN, Yang SP. Exergames for health and fitness: the roles of GPS and geosocial apps. Int J Health Geogr. 2013;12:18. doi:10.1186/1476-072X-12-18.View ArticleGoogle Scholar
- Althoff T, White RW, Horvitz E. Influence of Pokémon Go on physical activity: study and implications. J Med Internet Res. 2016;18(12):e315. doi:10.2196/jmir.6759.View ArticlePubMedPubMed CentralGoogle Scholar
- Nigg CR, Mateo DJ, An J. Pokémon GO may increase physical activity and decrease sedentary behaviors. Am J Public Health. 2017;107(1):37–8. doi:10.2105/AJPH.2016.303532.View ArticlePubMedGoogle Scholar
- Tateno M, Skokauskas N, Kato TA, Teo AR, Guerrero AP. New game software (Pokémon Go) may help youth with severe social withdrawal, hikikomori. Psychiatry Res. 2016;246:848–9. doi:10.1016/j.psychres.2016.10.038.View ArticlePubMedGoogle Scholar
- Bogle A. The story behind ‘Pokémon Go’s’ impressive mapping. Mashable. 2016 Jul 11 (online). http://mashable.com/2016/07/10/john-hanke-pokemon-go/.
- Kirkpatrick MG, Cruz TB, Goldenson NI, Allem JP, Chu KH, Pentz MA, Unger JB. Electronic cigarette retailers use Pokémon Go to market products. Tob Control. 2017 Jan 2. doi:10.1136/tobaccocontrol-2016-053369 [Epub ahead of print].
- Oidtman RJ, Christofferson RC, Ten Bosch QA, Espana G, Kraemer MU, Tatem A, Barker CM, Perkins TA. Pokémon Go and exposure to mosquito-borne diseases: how not to catch ‘Em All. PLoS Curr. 2016 Nov 15. doi:10.1371/currents.outbreaks.2d885b05c7e06a9f72e4656d56b043cd.
- Joseph B, Armstrong DG. Potential perils of peri-Pokémon perambulation: the dark reality of augmented reality? Oxf Med Case Reports. 2016, 2016(10): omw080, eCollection 2016. doi:10.1093/omcr/omw080.
- Ayers JW, Leas EC, Dredze M, Allem JP, Grabowski JG, Hill L. Pokémon GO—a new distraction for drivers and pedestrians. JAMA Intern Med. 2016;176(12):1865–6. doi:10.1001/jamainternmed.2016.6274.View ArticlePubMedGoogle Scholar
- Kastrenakes J. People are quickly losing interest in Pokémon Go. The Verge. 2016 Aug 23 (online). http://www.theverge.com/2016/8/23/12605150/pokemon-go-already-losing-players.
- Webster A. Pokémon Go is finally getting new pokémon today. The Verge. 2016 Dec 12 (online). http://www.theverge.com/2016/12/12/13922834/pokemon-go-new-pokemon-pichu-togepi.
- McCormick R. The Pokémon Go Plus wearable will launch next week. The Verge. 2016 Sep 8 (online). http://www.theverge.com/2016/9/8/12845470/pokemon-go-plus-release-date.
- Cheating in Pokémon Go. https://www.instagram.com/p/BIR4xdDDZgb/?taken-by=mnkboulos.
- Kamel Boulos MN, Blanchard BJ, Walker C, Montero J, Tripathy A, Gutierrez-Osuna R. Web GIS in practice X: a Microsoft Kinect natural user interface for Google Earth navigation. Int J Health Geogr. 2011;10:45. doi:10.1186/1476-072X-10-45.View ArticlePubMed CentralGoogle Scholar
- Kent ST, McClure LA, Crosson WL, Arnett DK, Wadley VG, Sathiakumar N. Effect of sunlight exposure on cognitive function among depressed and non-depressed participants: a REGARDS cross-sectional study. Environ Health. 2009;8:34. doi:10.1186/1476-069X-8-34.View ArticlePubMedPubMed CentralGoogle Scholar
- iOnRoad Augmented Driving Pro (app). https://play.google.com/store/apps/details?id=com.picitup.iOnRoad.pro.
- iOnRoad—Personal Driving Assistant (online video). https://youtu.be/XRTLk13FXkk.
- Layar Layer—Asian Restaurants in LA (online video). https://www.youtube.com/watch?v=GHyKV_snH2c.
- Bainbridge WS. The scientific research potential of virtual worlds. Science. 2007;317(5837):472–6. doi:10.1126/science.1146930.View ArticlePubMedGoogle Scholar
- Kamel Boulos MN, Burden D. Web GIS in practice V: 3-D interactive and real-time mapping in Second Life. Int J Health Geogr. 2007;6:51. doi:10.1186/1476-072X-6-51.View ArticleGoogle Scholar
- Kamel Boulos MN, Scotch M, Cheung KH, Burden D. Web GIS in practice VI: a demo playlist of geo-mashups for public health neogeographers. Int J Health Geogr. 2008;7:38. doi:10.1186/1476-072X-7-38.View ArticleGoogle Scholar
- Kamel Boulos MN, Robinson LR. Web GIS in practice VII: stereoscopic 3-D solutions for online maps and virtual globes. Int J Health Geogr. 2009;8:59. doi:10.1186/1476-072X-8-59.View ArticleGoogle Scholar
- Kamel Boulos MN, Ramloll R, Jones R, Toth-Cohen S. Web 3D for public, environmental and occupational health: early examples from second life. Int J Environ Res Public Health. 2008;5(4):290–317. doi:10.3390/ijerph5040290.View ArticlePubMedPubMed CentralGoogle Scholar
- Huang B, Lin H. GeoVR: a web-based tool for virtual reality presentation from 2D GIS data. Comput Geosci. 1999;25(10):1167–75. doi:10.1016/S0098-3004(99)00073-4.View ArticleGoogle Scholar
- Huang B, Lin H. GIS-based interactive 3D visualization and analysis on the Internet. J Geospatial Eng. 2000;2(2):27–36. https://pdfs.semanticscholar.org/8ef0/fe2c845058365dab07ffc97634aba4e1e50c.pdf.
- Coors V. 3D-GIS in networking environments. Comput Environ Urban Syst. 2003;27(4):345–57. doi:10.1016/S0198-9715(02)00035-2.View ArticleGoogle Scholar
- Lin H, Chen M, Lu G, Zhu Q, Gong J, You X, Wen Y, Xu B, Hu M. Virtual geographic environments (VGEs): a new generation of geographic analysis tool. Earth-Sci Rev. 2013;126:74–84. doi:10.1016/j.earscirev.2013.08.001.View ArticleGoogle Scholar
- Schroeder R, Huxor A, Smith A. Activeworlds: geography and social interaction in virtual reality. Futures. 2001;33(7):569–87. doi:10.1016/S0016-3287(01)00002-7.View ArticleGoogle Scholar
- Lu Z, Guerrero PA, Mitra NJ, Steed A. Open3D: crowd-sourced distributed curation of city models. In: Proceedings of Web3D ‘16 symposium, the 21st international conference on Web3D technology, Anaheim, California, 22–24 July 2016. New York: ACM; 2016, p. 87–94. doi:10.1145/2945292.2945302.
- Lloyd D, Haklay M, Thurstain-Goodwin M, Tobon C. Visualising spatial structure in urban data. In: Longley PA, Batty M, editors. Advanced spatial analysis: the CASA book of GIS. Redlands: ESRI Press; 2003. p. 267–288. http://discovery.ucl.ac.uk/id/eprint/16771.
- Steed A, Spinello S, Croxford B, Milton R. Data visualization within urban models. In: Proceedings of theory and practice of computer graphics, Birmingham, 8–10 June 2004. IEEE, 2004. p. 9-16. doi:10.1109/TPCG.2004.1314447.
- Wloka MM. Lag in multiprocessor virtual reality. Presence Teleoperators Virtual Environ. 1995;4(1):50–63. doi:10.1162/pres.19126.96.36.199.View ArticleGoogle Scholar
- Zheng F, Whitted T, Lastra A, Lincoln P, State A, Maimone A, Fuchs H. Minimizing latency for augmented reality displays: frames considered harmful. In: Proceedings of IEEE international symposium on mixed and augmented reality (ISMAR), Munich, 10–12 September 2014. IEEE; 2004. p. 195–200. doi:10.1109/ISMAR.2014.6948427.
- Bittner J, Wimmer M, Piringer H, Purgathofer W. Coherent hierarchical culling: hardware occlusion queries made useful. Comput Graph Forum. 2004;23(3):615–24. doi:10.1111/j.1467-8659.2004.00793.x.View ArticleGoogle Scholar
- Chamberlain B, DeRose T, Lischinski D, Salesin D, Snyder J. Fast rendering of complex environments using a spatial hierarchy. In: Proceedings of the conference on graphics interface ‘96 (GI’96). Davis WA, editor. Toronto: Canadian Information Processing Society; 1996. p. 132–141. http://dl.acm.org/citation.cfm?id=241020.241060.
- Cesium by Analytical Graphics Inc. https://cesium.agi.com/.
- Verdie Y, Lafarge F, Alliez P. LOD generation for urban scenes. ACM Trans Graph. 2015; 34(3): Article 30 (May 2015). doi:10.1145/2732527.
- WebGL. https://www.khronos.org/registry/webgl/specs/1.0/.
- Behr J, Eschler P, Jung Y, Zöllner M. X3DOM: a DOM-based HTML5/X3D integration model. In: Proceedings of the 14th international conference on 3D web technology (Web3D’09), Darmstadt, 16–17 June 2009. Spencer SN, editors. ACM, New York: ACM; 2009. p. 127–135. doi:10.1145/1559764.1559784.
- OnShape. https://www.onshape.com/.
- Clara.io by Exocortex Technologies Inc. https://clara.io/.
- Tinkercad by Autodesk Inc. https://www.tinkercad.com/.
- Musialski P, Wonka P, Aliaga DG, Wimmer M, van Gool L, Purgathofer W. A survey of urban reconstruction. Comput Graph Forum. 2013;32(6):146–77. doi:10.1111/cgf.12077.View ArticleGoogle Scholar
- Schindler G, Krishnamurthy P, Dellaert F. Line-Based structure from motion for urban environments. In: Proceedings of the third international symposium on 3D data processing, visualization, and transmission (3DPVT’06), 14–16 June 2006. Washington: IEEE Computer Society; 2006. p. 846–853. doi:10.1109/3DPVT.2006.90.
- Snavely N, Simon I, Goesele M, Szeliski R, Seitz SM. Scene reconstruction and visualization from community photo collections. In: Proceedings of the IEEE 2010;98(8): 1370–1390. https://www.microsoft.com/en-us/research/publication/scene-reconstruction-and-visualization-from-community-photo-collections/.
- Mičušík B, Košecká J. Multi-view superpixel stereo in urban environments. Int J Comput Vis. 2010;89:106. doi:10.1007/s11263-010-0327-9.View ArticleGoogle Scholar
- Frahm J-M, Fite-Georgel P, Gallup D, Johnson T, Raguram R, Wu C, Jen Y-H, Dunn E, Clipp B, Lazebnik S, Pollefeys M. Building Rome on a cloudless day. In: Proceedings of ECCV 2010: 11th European conference on computer vision, Heraklion, Crete, Greece, 5–11 September 2010, Proceedings, Part IV. Computer Vision—ECCV 2010, Volume 6314 of the series Lecture Notes in Computer Science. Berlin: Springer, 2010; p. 368–381. doi:10.1007/978-3-642-15561-1_27.
- Li Y, Zheng Q, Sharf A, Cohen-Or D, Chen B, Mitra NJ. 2D–3D fusion for layer decomposition of urban facades. In: Proceedings of the 2011 international conference on computer vision (ICCV), Barcelona, 6–13 November 2011. IEEE, 2011; p. 882–889. doi:10.1109/ICCV.2011.6126329.
- Vanegas CA, Aliaga DG, Benes B. Automatic extraction of Manhattan-world building masses from 3D laser range scans. IEEE Trans Vis Comput Graph. 2012;18(10):1627–37. doi:10.1109/TVCG.2012.30.View ArticlePubMedGoogle Scholar
- Nan L, Jiang C, Ghanem B, Wonka P. Template assembly for detailed urban reconstruction. Comput Graph Forum (Proceedings of Eurographics). 2015;34(2):217–28. doi:10.1111/cgf.12554.View ArticleGoogle Scholar
- Fan L, Wonka P. A probabilistic model for exteriors of residential buildings. ACM Trans Graph. 2016; 35(5): Article 155. doi:10.1145/2910578.
- Dang M, Lienhard S, Ceylan D, Neubert B, Wonka P, Pauly M. Interactive design of probability density functions for shape grammars. ACM Trans Graph (Proceedings of ACM SIGGRAPH Asia 2015). 2015;34(6): Article 206. doi:10.1145/2816795.2818069.
- Guerrero P, Jeschke S, Wimmer M, Wonka P. Learning shape placements by example. ACM Transactions on Graphics (Proceedings of ACM SIGGRAPH 2015). 2015, 34(4): Article 108, 13 pages. doi:10.1145/2766933.
- Google Earth. https://earth.google.com/.
- Google will be discontinuing the Building Maker tool (18 March 2013). http://www.gearthblog.com/blog/archives/2013/03/google_will_be_discontinuing_the_bu.html.
- What is Esri CityEngine? http://desktop.arcgis.com/en/cityengine/latest/get-started/overview-cityengine.htm.
- Lin T, Lin H, Hu M. Three-dimensional visibility analysis and visual quality computation for urban open spaces aided by Google SketchUp and WebGIS. Environ Plan B: Plann Des. 2015 (published first online). doi:10.1177/0265813515605097.
- AutoCAD by Autodesk, Inc. http://www.autodesk.com/products/autocad.
- Esri. http://www.esri.com.
- VertexModeling. http://vertexmodelling.co.uk/.
- Schwarz M, Wonka P. Procedural design of exterior lighting for buildings with complex constraints. ACM Trans Graph. 2014;33(5): Article 166. doi:10.1145/2629573.
- Kelly T, Wonka P, Mueller P. Interactive dimensioning of parametric models. Comput Graph Forum. 2015;34(2):117–29. doi:10.1111/cgf.12546.View ArticleGoogle Scholar
- Nishida G, Garcia-Dorado I, Aliaga DG, Benes B, Bousseau A. Interactive sketching of urban procedural models. ACM Trans Graph (Proceedings of ACM SIGGRAPH 2016). 2016, 35(4): Article 130. doi:10.1145/2897824.2925951.
- Kamel Boulos MN, Resch B, Crowley DN, Breslin JG, Sohn G, Burtner R, Pike WA, Jezierski E, Chuang KY. Crowdsourcing, citizen sensing and sensor web technologies for public and environmental health surveillance and crisis management: trends, OGC standards and application examples. Int J Health Geogr. 2011;10:67. doi:10.1186/1476-072x-10-67.View ArticlePubMedPubMed CentralGoogle Scholar
- Goodchild MF. Citizens as sensors: the world of volunteered geography. GeoJournal. 2007;69(4):211–21. doi:10.1007/s10708-007-9111-y.View ArticleGoogle Scholar
- Budhathoki NR, Haythornthwaite C. Motivation for open collaboration: crowd and community models and the case of OpenStreetMap. Am Behav Sci. 2013;57(5):548–75. doi:10.1177/0002764212469364.View ArticleGoogle Scholar
- Hristova D, Quattrone G, Mashhadi AJ, Capra L. The life of the party: Impact of social mapping in OpenStreetMap. In: Proceedings of ICWSM, the seventh international AAAI conference on weblogs and social media, Cambridge, 8-10 July 2013. http://www.aaai.org/ocs/index.php/ICWSM/ICWSM13/paper/view/6098.
- Haklay M. How good is volunteered geographical information? A comparative study of OpenStreetMap and ordnance survey datasets. Environ Plan. 2010;37(4):682–703. doi:10.1068/b35097.View ArticleGoogle Scholar
- Horita FEA, Degrossi LC, de Assis LFG, Zipf A, de Albuquerque JP. The use of volunteered geographic information (VGI) and crowdsourcing in disaster management: a systematic literature review. In: Proceedings of the nineteenth americas conference on information systems, Chicago, 15–17 August 2013. http://aisel.aisnet.org/cgi/viewcontent.cgi?article=1591&context=amcis2013.
- D Buildings Tutorials—Intro to Google Building Maker. https://www.google.co.uk/earth/learn/3dbuildings.html.
- Uden M, Schilling A, Li M, Götz M, Zipf A. Creating a worldwide 3D globe from user-generated data. 2012 (online). http://www.visualisierung.dgfk.net/docs/Zipf_A.pdf.
- Fan H, Zipf A. Modelling the world in 3D from VGI/Crowdsourced data. In: Capineri C, Haklay M, Huang H, Antoniou V, Kettunen J, Ostermann F, Purves R, editors. European Handbook of crowdsourced geographic information. London: Ubiquity Press; 2016. p. 435–446. https://www.researchgate.net/publication/307475703_Modelling_the_world_in_3D_from_VGI_Crowdsourced_data.
- Hughes N. Apple’s 3D recording concept could allow user-generated ‘street views’ in Maps. Apple Insider. 2014 Jan 7 (online). http://appleinsider.com/articles/14/01/07/apples-3d-recording-concept-could-allow-user-generated-street-views-in-maps.
- Taylor F. Google Releases Google Earth VR for HTC Vive. Google Earth Blog. 2016 Nov 16 (online). http://www.gearthblog.com/blog/archives/2016/11/google-releases-google-earth-vr-htc-vive.html.
- Goodchild MF. Geographic information systems and science: today and tomorrow. Ann GIS. 2009;15(1):3–9. doi:10.1016/j.proeps.2009.09.160.View ArticleGoogle Scholar
- Goodchild MF. Twenty years of progress: GIScience in 2010. J Spatial Inf Sci. 2010;2010(1):3–20. http://www.josis.org/index.php/josis/article/view/32.
- Lv Z, Li X, Zhang B, Wang W, Zhu Y, Hu J, Feng S. Managing big city information based on WebVRGIS. IEEE Access. 2016;4:407–15. doi:10.1109/ACCESS.2016.2517076.View ArticleGoogle Scholar
- Guo H, Li X, Wang W, Lv Z, Wu C, Xu W. An event-driven dynamic updating method for 3D geo-databases. Geo-spatial Inf Sci. 2016;19(2):140–7. doi:10.1080/10095020.2016.1182808.View ArticleGoogle Scholar
- Breunig M, Zlatanova S. 3D geo-database research: retrospective and future directions. Comput Geosci. 2011;37(7):791–803. doi:10.1016/j.cageo.2010.04.016.View ArticleGoogle Scholar
- Steed A, Frécon E. Construction of collaborative virtual environments. In: Kisielnicki J, editor. Virtual technologies: concepts, methodologies, tools, and applications, vol. 3. Hershey: IGI Global; 2008. p. 44–68. doi:10.4018/978-1-59904-955-7.ch005.View ArticleGoogle Scholar
- Haklay M. Usability dimensions in collaborative GIS. In: Balram S, Dragicevic S, editors. Collaborative geographic information systems. Hershey: IGI Global; 2006. p. 24–42. doi:10.4018/978-1-59140-845-1.ch002.View ArticleGoogle Scholar
- Jacobson RD, Kitchin R, Golledge R. Chapter 25: multi-modal virtual reality for presenting geographic information. In: Fisher P, Unwin D, editors. Virtual reality in geography. London: CRC Press; 2001. p. 382–400. doi:10.1201/9780203305850.ch25.Google Scholar
- Johnson A, Leigh J, Morin P, Van Keken P. GeoWall: stereoscopic visualization for geoscience research and education. IEEE Comput Graph Appl. 2006;26(6):10–4. doi:10.1109/MCG.2006.127.View ArticlePubMedGoogle Scholar
- Bowman DA, McMahan RP. Virtual reality: how much immersion is enough? Computer. 2007;40(7):36–43. doi:10.1109/MC.2007.257.View ArticleGoogle Scholar
- Lv Z, Halawani A, Feng S, Ur Réhman S, Li H. Touch-less interactive augmented reality game on vision-based wearable device. Pers Ubiquit Comput. 2015;19(3–4):551–67. doi:10.1007/s00779-015-0844-1.View ArticleGoogle Scholar
- Lv Z, Halawani A, Feng S, Li H, Réhman SU. Multimodal hand and foot gesture interaction for handheld devices. ACM Trans Multimed Comput Commun Appl (TOMM). 2014;11(1s):10. doi:10.1145/2645860.Google Scholar
- Yang J, Lin Y, Gao Z, Lv Z, Wei W, Song H. Quality index for stereoscopic images by separately evaluating adding and subtracting. PLoS ONE. 2015;10(12):e0145800. doi:10.1371/journal.pone.0145800.View ArticlePubMedPubMed CentralGoogle Scholar
- Liu Y, Yang J, Meng Q, Lv Z, Song Z, Gao Z. Stereoscopic image quality assessment method based on binocular combination saliency model. Sig Process. 2016;125:237–48. doi:10.1016/j.sigpro.2016.01.019.View ArticleGoogle Scholar
- Google Glass. https://www.google.com/glass/start/.
- Wang W, Lv Z, Li X, Xu W, Zhang B, Zhang X. Virtual reality based GIS analysis platform. In: Proceedings of 22nd international conference on neural information processing, Istanbul, 9–12 November 2015. New York: Springer International Publishing; 2015. p. 638–645. (ICONIP 2015 Proceeings, Part II, Volume 9490). doi:10.1007/978-3-319-26535-3_73.
- Liu X, Zhang Y, Cao W, Zhu Y. Design and Realization of a VRGIS-Based Digital Agricultural Region Management System. In: Li D, Liu Y, Chen Y, editors. Computer and computing technologies in agriculture IV. CCTA 2010. IFIP advances in information and communication technology, vol. 344. Berlin: Springer; 2011. p. 446–55. doi:10.1007/978-3-642-18333-1_52.Google Scholar
- Hecht B, Schöning J, Erickson T, Priedhorsky R. Geographic human–computer interaction. In: Proceedings of CHI’11 extended abstracts on human factors in computing systems, Vancouver, 7–12 May 2011. New York: ACM; 2011. p. 447–450. doi:10.1145/1979742.1979532.
- DiSalvo C, Vertesi J. Imaging the city: exploring the practices and technologies of representing the urban environment in HCI. In: Proceedings of CHI’07 extended abstracts on Human factors in computing systems, San Jose, 28 April—3 May 2007. New York: ACM; 2007, p. 2829–2832. doi:10.1145/1240866.1241088.
- Fischer PT, Hornecker E. Urban HCI: interaction patterns in the built environment. In: Proceedings of the 25th BCS conference on Human–Computer interaction, Newcastle-upon-Tyne, 4–8 July 2011. Swindon: British Computer Society Learning & Development Ltd; 2011. P. 531–534. http://dl.acm.org/citation.cfm?id=2305413.
- Li X, Lv Z, Wang W, Zhang B, Hu J, Yin L, Feng S. WebVRGIS based traffic analysis and visualization system. Adv Eng Softw. 2016;93:1–8. doi:10.1016/j.advengsoft.2015.11.003.View ArticleGoogle Scholar
- Su T, Cao Z, Lv Z, Liu C, Li X. Multi-dimensional visualization of large-scale marine hydrological environmental data. Adv Eng Softw. 2016;95:7–15. doi:10.1016/j.advengsoft.2016.01.009.View ArticleGoogle Scholar
- Lv Z, Su T. 3D seabed modeling and visualization on ubiquitous context. In: Proceedings of SIGGRAPH Asia 2014 (Posters), Shenzhen, China, 3–6 December 2014. New York: ACM; 2014. p. 33. doi:10.1145/2668975.2668977.
- Li W, Chen G, Kong Q, Wang Z, Qian C. A VR-ocean system for interactive geospatial analysis and 4D visualization of the marine environment around Antarctica. Comput Geosci. 2011;37(11):1743–51. doi:10.1016/j.cageo.2011.04.009.View ArticleGoogle Scholar
- Ma C, Chen G, Han Y, Qi Y, Chen Y. An integrated VR–GIS navigation platform for city/region simulation. Comput Anim Virtual Worlds. 2010;21(5):499–507. doi:10.1002/cav.322.View ArticleGoogle Scholar
- Lv Z, Chen G, Zhong C, Han Y, Qi YY. A framework for multi-dimensional WebGIS based interactive online virtual community. Adv Sci Lett. 2012;7(1):215–9. doi:10.1166/asl.2012.2063.View ArticleGoogle Scholar
- Lv Z, Li X. Virtual reality assistant technology for learning primary geography. In: Proceedings of international conference on web-based learning, revised selected papers of the ICWL 2015 international workshops on current developments in web based learning—Volume 9584, 5–8 November 2015. New York: Springer-Verlag New York, Inc.; 2015. p. 31–40. doi:10.1007/978-3-319-32865-2_4.
- Hu M, Lin H, Chen B, Chen M, Che W, Huang F. A virtual learning environment of the Chinese University of Hong Kong. Int J Digit Earth. 2011;4(2):171–82. doi:10.1080/17538947.2010.535028.View ArticleGoogle Scholar
- Zhang X, Han Y, Hao D, Lv Z. ARGIS-based outdoor underground pipeline information system. J Vis Commun Image Represent. 2016; 40(Part B):779–790. doi:10.1016/j.jvcir.2016.07.011.
- D Cities in Google Earth (online video). https://www.youtube.com/watch?v=HWqtjT_fKhA.
- Batty M. Virtual reality in geographic information systems (Part III, Chapter 17). In: Wilson JP, Fotheringham AS, editors. The Handbook of Geographic Information Science. Oxford: Wiley-Blackwell Publishing, 2007; p. 317–334. http://eu.wiley.com/WileyCDA/WileyTitle/productCd-1405107952.html.
- Schilling A, Zipf A. Generation of VRML city models for focus based tour animations: integration, modeling and presentation of heterogeneous geo-data sources. In: Web3D ‘03, Proceedings of the 8th international conference on 3D Web technology, Saint Malo, France, 9–12 March 2003. New York: ACM, 2003; p. 39–47, 202. doi:10.1145/636593.636599.
- Xu B, Lin H, Gong J, Tang S, Hu Y, Nasser IA, Jing T. Integration of a computational grid and virtual geographic environment to facilitate air pollution simulation. Comput Geosci. 2013;54:184–95. doi:10.1016/j.cageo.2012.09.031.View ArticleGoogle Scholar
- Chen M, Lin H, Hu M, He L, Zhang C. Real-geographic-scenario-based virtual social environments: integrating geography with social research. Environ Plan. 2013;40(6):1103–21. doi:10.1068/b38160.View ArticleGoogle Scholar
- Vanegas CA, Aliaga DG, Benes B, Waddell P. Visualization of simulated urban spaces: inferring parameterized generation of streets, parcels, and aerial imagery. IEEE Trans Vis Comput Graph. 2009;15(3): 424–435. http://hpcg.purdue.edu/papers/Vanegas09TVCG.pdf.
- Huang B, Jiang B, Li H. An integration of GIS, virtual reality and the Internet for visualization, analysis and exploration of spatial data. Int J Geogr Inf Sci. 2001;15(5):439–56. doi:10.1080/13658810110046574.View ArticleGoogle Scholar
- Lv Z, Yin T, Song H, Chen G. Virtual reality smart city based on WebVRGIS. IEEE Internet Things J. 2016;3(6):1015–24. doi:10.1109/JIOT.2016.2546307.View ArticleGoogle Scholar
- Li X, Lv Z, Hijazi IH, Jiao H, Li L, Li K. Assessment of urban fabric for smart cities. IEEE Access. 2016;4:373–82. doi:10.1109/ACCESS.2016.2517072.View ArticleGoogle Scholar
- Hijazi I, Li X, Koenig R, Schmit G, El Meouche R, Lv Z, Abune’meh M. Measuring the homogeneity of urban fabric using 2D geometry data. Environ Plan B Plan Des. 2016 (published first online). doi:10.1177/0265813516659070.
- Garb JL, Ganai S, Skinner R, Boyd CS, Wait RB. Using GIS for spatial analysis of rectal lesions in the human body. Int J Health Geogr. 2007;6:11. doi:10.1186/1476-072X-6-11.View ArticlePubMedPubMed CentralGoogle Scholar
- Philips announces new augmented-reality surgical navigation technology designed for image-guided spine, cranial and trauma surgery (12 January 2017). http://www.philips.com/a-w/about/news/archive/standard/news/press/2017/20170112-philips-announces-new-augmented-reality-surgical-navigation-technology-designed-for-image-guided-spine-cranial-and-trauma-surgery.html.
- Elmi-Terander A, Skulason H, Söderman M, Racadio J, Homan R, Babic D, van der Vaart N, Nachabe R. Surgical navigation technology based on augmented reality and integrated 3D intraoperative imaging: a spine cadaveric feasibility and accuracy study. Spine (Phila Pa 1976). 2016;41(21): E1303–E1311. doi:10.1097/BRS.0000000000001830.
- Kamel Boulos MN. Gamification & VR/AR in Health/care (Google + Collection). https://plus.google.com/collection/UWt9LE.