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- Maria Marreiros, Filipe Miguel, et al.
(author)
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An augmented reality showcase to support a cultural heritage scenario
- 2005
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In: Proceedings of TESI 2005 CD-ROM: Training, Education & Simulation International, 22-24 March 2005 MECC Maastricht, The Netherland..
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Conference paper (peer-reviewed)abstract
- The support and enhancement of cultural heritage scenarios through the application of virtual and augmented reality technology has been a subject of intensive research and study in the last years. Some results have been already deployed and used in end-user environments such us museums or archaeology sites. In this paper we present our own solution – a virtual showcase – designed based on an augmented reality system. This system integrates half-silvered mirrors that are used to merge the real scene, visible through the mirror, together with the computer generated images projected on it. Using a head tracking system, the correct images can be computed according to the observer’s point of view. Our showcase configuration consists of 8 different points of visualization, all oriented to the centre of the real scene, thus maximizing the number of users as well allowing the integration of high interactive mechanisms suitable for game-oriented applications. An augmented game is here presented as a use case to serve cultural heritage purposes.
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- Binotto, Alécio Pedro Delazari, et al.
(author)
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Towards Dynamic Task Scheduling and Reconfiguration using an Aspect Oriented Approach applied on Real-time concerns of Industrial Systems
- 2009
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In: Elsevier IFAC Publications / IFAC Proceedings series. - Frankfurt : Elsevier. - 1474-6670. ; 13:PART 1, s. 1423-1428
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Journal article (peer-reviewed)abstract
- High performance computational platforms are required by industries that make use of automatic methods to manage modern machines, which are mostly controlled by high-performance specific hardware with processing capabilities. It usually works together with CPUs, forming a powerful execution platform. On an industrial production line, distinct tasks can be assigned to be processed by different machines depending on certain conditions and production parameters. However, these conditions can change at run-time influenced mainly by machine failure and maintenance, priorities changes, and possible new better task distribution. Therefore, self-adaptive computing is a potential paradigm as it can provide flexibility to explore the machine resources and improve performance on different execution scenarios of the production line. One approach is to explore scheduling and run-time task migration among machines’ hardware towards a balancing of tasks, aiming performance and production gain. This way, the monitoring of time requirements and its crosscutting behaviour play an important role for task (re)allocation decisions. This paper introduces the use of software aspect-oriented paradigms to perform machines’ monitoring and a self-rescheduling strategy of tasks to address nonfunctional timing constraints. As case study, tasks for a production line of aluminium ingots are designed. © 2009 IFAC.
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- de Freitas, Edison Pignaton, et al.
(author)
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Dynamic activity and task allocation supporting uav teams in surveillance systems
- 2009
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In: Proceedings of the International Multiconference on Computer Science and Information Technology, 2009. IMCSIT '09. - Piscataway, N.J. : IEEE Press. - 9781424453146 ; , s. 51-58
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Conference paper (peer-reviewed)abstract
- The use of Unmanned Aerial Vehicles is increasing in the field of area patrolling and surveil- lance. A great issue that emerge in designing such systems is the target workload distribution over a fleet of UAVs, which generally have different capabilities of sensing and computing power. Targets should be assigned to the most suitable UAVs in order to efficiently perform the end-user initiated missions. To perform these missions, the UAVs require powerful high-performance platforms to deal with many dif- ferent algorithms that make use of massive calculations. The use of COTS hardware (e.g., GPU) presents an interesting low-cost alternative to compose the required platform. However, in order to efficiently use these heterogeneous platforms in a dynamic scenario, such as in surveillance systems, runtime reconfigu- ration strategies must be provided. This paper presents a dynamic approach to distribute the handling of targets among the UAVs and a heuristic method to address the efficient use of the heterogeneous hard- ware that equips these UAVs, with the goal to meet also mission timing requirements. Preliminary simu- lation results of the proposed heuristics are also provided.
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