Advances in Location-Based Services: 8th International by Karl Rehrl, Elisabeth Häusler, Renate Steinmann, Sven

By Karl Rehrl, Elisabeth Häusler, Renate Steinmann, Sven Leitinger, Daniel Bell (auth.), Georg Gartner, Felix Ortag (eds.)

This e-book offers a common photograph of research-driven actions relating to position and map-based prone. The interdisciplinary personality of the subject results in a number of contributions with backgrounds from academia to enterprise and from laptop technology to geodesy. whereas cartography is aiming at effective conversation of spatial info, the advance and availability of applied sciences like cellular networking, cellular units or short-range sensors result in fascinating new chances of attaining this goal. via attempting to utilize the on hand applied sciences, a number of similar disciplines appears to be like particularly at user-centered and context-aware approach improvement, particularly in wayfinding and navigation systems.

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Extra info for Advances in Location-Based Services: 8th International Symposium on Location-Based Services, Vienna 2011

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As soon as the view-finder shows the area of interest, the tourist will be able to choose between two products: (i) an augmented photo superimposed with tourist information like hiking tours or lookout points or (ii) a rendered 3D virtual reality view showing the same view as the real photo also augmented with tourist objects. The outstanding step beyond current augmented reality applications is that MARFT is able to augment the reality with cartographic accuracy. In addition to the benefit of presenting reliable information, MARFT is able to consider the visibility of objects and further to work completely offline in order to avoid roaming costs especially for tourists visiting from abroad.

By using this approach the memory usage gets reduced dramatically without sacrificing the detail of the scenery. The Terrain Engine uses pictures to generate the geometry of the 3D World. The geo-referenced 3D model (Height-Map) of the terrain is represented by greyscale pictures, in which each pixel and its colour value represents the height at a particular spatial position. This Height-Map is used for each tile of the 3D world to generate the triangles, used to build up the 3D model. Storing Height-Maps as pictures results in less storage space, compared to storing the world as 3D coordinates.

29 Different user roles of the MARFT system Name Profile: Background and Knowledge Mobile user Authenticated person, who uses the MARFT application on the mobile device. Web user Authenticated person, who uses the MARFT web site to browse touristic content. Guest user Anonymous person, who uses the MARFT web site to browse the touristic content. Content administrator Person, who manages the touristic geo-referenced content in the MARFT system. System administrator Person, who administrates and maintains the MARFT system.

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