Glob3 Mobile: An Open Source Framework for Designing Virtual Globes on iOS and Android Mobile Devices

Trujillo, Agustín; Suárez, José P.; Calle, Manuel de la; Gómez, Diego; Pedriza, Alfonso; Santana, J.J.

doi:10.1007/978-3-642-29793-9_12

Cited by 11 publications

(9 citation statements)

References 9 publications

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“…They further described and discussed the handling and storage of data in 3D/4D web-based interfaces. A multimodal interface based on Glob3m, an open-source web globe based on OpenGL and WebGL that can be viewed in multiple visualization modes on mobile devices was presented in Santana et al [37], where the user could interact with energy model outputs in an immersive manner [38].…”

Section: Related Research and Current Trendsmentioning

confidence: 99%

Design and Implementation of a 4D Web Application for Analytical Visualization of Smart City Applications

Murshed

Al-Hyari

Wendel

et al. 2018

IJGI

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Contemporary development of computer hardware and software, WebGIS and geo-web services as well as the availability of semantic 3D city models, facilitate flexible and dynamic implementation of web applications. The aim of this paper is to introduce 4D CANVAS, a web-based application for dynamic visualization of 3D geospatial data for improved decision making in smart city applications. It is based on the Cesium Virtual Globe, an open-source JavaScript library developed with HTML5 and WebGL. At first, different data formats such as JSON, GeoJSON, Cesium Markup Language (CZML) and 3D Tiles are evaluated for their suitability in 4D visualization applications. Then, an interactive Graphical User Interface (GUI) is built observing the principle of cartographic standards to view, manage, understand and explore different simulation outputs at multiple spatial (3D surface of buildings) and temporal (hourly, daily, monthly) resolutions. In this regard, multiple tools such as aggregation, data classification, etc. are developed utilizing JavaScript libraries. As a proof of concept, two energy simulations and their outputs of different spatial and temporal resolutions are demonstrated in five Asian and European cities. Finally, the 4D CANVAS is deployed both in desktop and multi-touch screens. The proposed application allows easy integration of any other geospatial simulation results, thereby helps the users from different sectors to explore them interactively in 4D.

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Section: Related Research and Current Trendsmentioning

confidence: 99%

Design and Implementation of a 4D Web Application for Analytical Visualization of Smart City Applications

Murshed

Al-Hyari

Wendel

et al. 2018

IJGI

View full text Add to dashboard Cite

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“…This method follows certain data access standards in the geospatial domain, such as the Web Map Service (WMS), and has a relatively high scene-rendering frame rate [38]. Trujillo and Suárez implemented a method for the 3D visualization of terrain models, based on a virtual globe, on mobile devices such as the iPad 2, the Samsung Galaxy Tab, and the iPhone 4 [39,40]. Santana et al also implemented the 3D stereoscopic rendering of terrain models and building block models on the iPhone 6 smartphone on the basis of a virtual globe [41].…”

Section: Introductionmentioning

confidence: 99%

“…These methods are not optimal for the performance and display environments of current smartphones, and they are also very tedious to implement. Some other researchers [39][40][41] claim to have implemented the visualization of terrain models based on the open-source technology Glob3 Mobile [42], but the related website did not provide any source code or development documents. As a result, the 3D stereoscopic rendering function reported by Santana et al [41], the most important function for scene visualization in mobile VR [43], cannot be independently reproduced on the basis of Glob3 Mobile; in addition, other functions necessary for the 3D visualization of disaster scenes in mobile VR also cannot be implemented on the basis of Glob3 Mobile.…”

Section: Introductionmentioning

confidence: 99%

“…However, as mentioned above, the models of 3D disaster scenes usually include large-data terrain models, disaster simulation models, etc., so it is necessary to reduce the amount of scene data in order to improve the scene-rendering frame rate, so as to satisfy the high frame-rate requirements for the stereoscopic rendering of 3D disaster scenes based in mobile VR. However, the existing methods for reducing the amount of scene data are either for high-performance PCs [6,8,17,19] or for earlier low-performance mobile phones [35][36][37][38][39][40], and are not suitable for the performance and display environments of current smartphones. Therefore, it is necessary to explore new scene data reduction methods, adapted for the performance and display environments of current smartphones, in order to achieve high scene-rendering frame rates.…”

Section: Introductionmentioning

confidence: 99%

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Construction and Optimization of Three-Dimensional Disaster Scenes within Mobile Virtual Reality

Zhu

et al. 2018

IJGI

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Because mobile virtual reality (VR) is both mobile and immersive, three-dimensional (3D) visualizations of disaster scenes based in mobile VR enable users to perceive and recognize disaster environments faster and better than is possible with other methods. To achieve immersion and prevent users from feeling dizzy, such visualizations require a high scene-rendering frame rate. However, the existing related visualization work cannot provide a sufficient solution for this purpose. This study focuses on the construction and optimization of a 3D disaster scene in order to satisfy the high frame-rate requirements for the rendering of 3D disaster scenes in mobile VR. First, the design of a plugin-free browser/server (B/S) architecture for 3D disaster scene construction and visualization based in mobile VR is presented. Second, certain key technologies for scene optimization are discussed, including diverse modes of scene data representation, representation optimization of mobile scenes, and adaptive scheduling of mobile scenes. By means of these technologies, smartphones with various performance levels can achieve higher scene-rendering frame rates and improved visual quality. Finally, using a flood disaster as an example, a plugin-free prototype system was developed, and experiments were conducted. The experimental results demonstrate that a 3D disaster scene constructed via the methods addressed in this study has a sufficiently high scene-rendering frame rate to satisfy the requirements for rendering a 3D disaster scene in mobile VR.

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“…Pegg (2012) laid out some guidelines and design techniques to help the 3D mapping professional, including rendering, illumination, abstraction, generalization, and viewing angles. As basic principles are established, specific design issues relating to 3D modeling can be researched, including general visualization of building models (Baig and Rahman 2013), camera angle and control (Klimke et al 2013), label placement, the integration of mobile devices (Trujillo et al 2013), rendering performance (Ellul 2013), quality management (Wagner et al 2013), general data management and structure (Breunig et al 2013;Ledoux and Meijers 2013)), and potential crowd sourcing options (Uden and Zipf 2013).…”

Section: Three-dimensional (3d) Geovisualizationmentioning

confidence: 99%

Evaluating the Effectiveness of Three Dimensional Geovisualization Tools in Communicating Climate Change Impacts, A PEI Case Study

Salisbury¹

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Three-dimensional geographic visualization (3D geovisualization) tools have been praised as a solution to the challenge of communicating climate change impacts by capturing public interest, making the issues more personal, and motivating users to take action. However, evaluation methods are not standardized, especially with novice and expert users. Using a combination of workshop surveying and usability testing, I addressed this issue by studying the Coastal Impact Visualization Environment (CLIVE) tool, which allows users to visualize potential sea-level rise and coastal erosion scenarios on PEI (Prince Edward Island). I found that geovisualization tools have the capability to educate and engage users about potential climate change impacts, but generally fade from the users' memories over time, leading to a lack of overall motivation to take climate change action. This has paved the way for the development of a pilot cybercartographic atlas to keep the discussion about climate change impacts accessible.

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Glob3 Mobile: An Open Source Framework for Designing Virtual Globes on iOS and Android Mobile Devices

Cited by 11 publications

References 9 publications

Design and Implementation of a 4D Web Application for Analytical Visualization of Smart City Applications

Design and Implementation of a 4D Web Application for Analytical Visualization of Smart City Applications

Construction and Optimization of Three-Dimensional Disaster Scenes within Mobile Virtual Reality

Evaluating the Effectiveness of Three Dimensional Geovisualization Tools in Communicating Climate Change Impacts, A PEI Case Study

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