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- Abedan Kondori, Farid, et al.
(författare)
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Real 3D interaction behind mobile phones for augmented environments
- 2011
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Ingår i: 2011 IEEE International Conference on Multimedia and Expo (ICME). - : IEEE conference proceedings. - 9781612843490 - 9781612843483 ; , s. 1-6
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Konferensbidrag (refereegranskat)abstract
- Number of mobile devices such as mobile phones or PDAs has been dramatically increased over the recent years. New mobile devices are equipped with integrated cameras and large displays which make the interaction with device easier and more efficient. Although most of the previous works on interaction between humans and mobile devices are based on 2D touch-screen displays, camera-based interaction opens a new way to manipulate in 3D space behind the device in the camera's field of view. This paper suggests the use of particular patterns from local orientation of the image called Rotational Symmetries to detect and localize human gesture. Relative rotation and translation of human gesture between consecutive frames are estimated by means of extracting stable features. Consequently, this information can be used to facilitate the 3D manipulation of virtual objects in various applications in mobile devices.
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- Agugiaro, G., et al.
(författare)
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A web-based interactive tool for multi-resolution 3d models of a maya archaeological site
- 2011
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Ingår i: 4TH ISPRS INTERNATIONAL WORKSHOP 3D-ARCH 2011. ; , s. 23-30
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Konferensbidrag (refereegranskat)abstract
- Continuous technological advances in surveying, computing and digital-content delivery are strongly contributing to a change in the way Cultural Heritage is "perceived": new tools and methodologies for documentation, reconstruction and research are being created to assist not only scholars, but also to reach more potential users (e.g. students and tourists) willing to access more detailed information about art history and archaeology. 3D computer-simulated models, sometimes set in virtual landscapes, offer for example the chance to explore possible hypothetical reconstructions, while on-line GIS resources can help interactive analyses of relationships and change over space and time. While for some research purposes a traditional 2D approach may suffice, this is not the case for more complex analyses concerning spatial and temporal features of architecture, like for example the relationship of architecture and landscape, visibility studies etc. The project aims therefore at creating a tool, called "QueryArch3D" tool, which enables the web-based visualisation and queries of an interactive, multi-resolution 3D model in the framework of Cultural Heritage. More specifically, a complete Maya archaeological site, located in Copan (Honduras), has been chosen as case study to test and demonstrate the platform's capabilities. Much of the site has been surveyed and modelled at different levels of detail (LoD) and the geometric model has been semantically segmented and integrated with attribute data gathered from several external data sources. The paper describes the characteristics of the research work, along with its implementation issues and the initial results of the developed prototype. [GRAPHICS] .
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- Ahmad, Farooq, et al.
(författare)
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Selection of foundational ontology for collaborative knowledge modeling in healthcare domain
- 2010
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Ingår i: Artificial intelligence. - Berlin, Heidelberg : Springer Berlin/Heidelberg. - 9783642154300 - 9783642154317 ; , s. 261-262
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Konferensbidrag (refereegranskat)abstract
- Ontology design is an important process for structuring knowledge to be reused in different projects in the health domain. In this paper, we describe an ontology design for the collaborative knowledge building system ACKTUS to be used for developing personalized knowledge applications for different domains. Different foundational ontologies were compared with respect to selected criteria considered vital for the project, such as modularity and descriptiveness.
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- Ahnlund, Petra, 1973-, et al.
(författare)
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På träningsläger inför C-uppsatsen
- 2010
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Ingår i: Undervisning på tvären. - Umeå : Universitetspedagogiskt centrum, Umeå universitet. - 9789174590647 ; , s. 29-46
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Konferensbidrag (refereegranskat)
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