2 research outputs found

    Design and assessment of a scalable and customizable low-cost tiled display system

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    © 2021 IEEE. Personal use of this material is permitted. Permissíon from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertisíng or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.[EN] In this paper, a scalable hardware and software architecture for low-cost tiled display systems (a.k.a. videowalls), customizable through a dynamic web-based management and configuration service is presented and evaluated both objectively and subjectively. It has been designed for both stored and live broadcast/broadband content, in mosaic or warp distributions. The videowalls can be dynamically configured via web in different ways: the displays can create a single screen of a larger size, or they can be configured in a customized way in order to playout different media contents in different display combinations. As display renderers, low-cost devices are proposed as the main hardware element to obtain affordable videowall systems. As a proof of concept, two prototypes have been implemented, including an accurate synchronization mechanism. To evidence the good performance of the prototypes and configuration service, Both objective and subjective evaluations have been conducted regarding synchronization accuracy and usability of the configuration service, obtaining satisfactory results.This work has been funded by the Generalitat Valenciana, through the R&D Program "Grants for research groups to be consolidated, AICO/2017" under Project AICO/2017/059.Marfil, D.; Boronat, F.; González-Salinas, J.; Vidal Meló, A. (2021). Design and assessment of a scalable and customizable low-cost tiled display system. IEEE Latin America Transactions. 19(5):708-716. https://doi.org/10.1109/TLA.2021.9448284S70871619

    Touch event handling for a touch-sensitive display wall system powered by Oracle VM VirtualBox

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    Augstas izšķirtspējas attēlošanas sistēmas tiek izmantotas, lai veiksmīgi attēlotu lietotājam informāciju uz lielākas virsmas, nodrošinot visu kontekstuālu datu iekļaušanu vienā prezentētā attēlā. Infiniviz ir uz virtualizācijas pamata izstrādātā augstas izšķirtspējas monitoru sistēma, kura piedāvā viegli pieejamas pārkonfigurēšanas un mērogojamības iespējas salīdzinājumā ar citiem pieejamiem risinājumiem. Infiniviz sistēmas galvenais trūkums ir mijiedarbības iespējas ar monitoru sienas saturu, kas tiek paveikts ar peles un tastatūras palīdzību. Darba ietvaros tiek piedāvāta skārienjūtīgu monitoru sienas arhitektūra. Tika izpētītas un dokumentētas daudzskārienu notikumu apstrādes iespējas Linux operētājsistēmā un to simulēšanas iespējas VirtualBox virtualizācijas platformā. Tika izveidots Infiniviz risinājuma pārskats. Darba ietvaros tika izstrādāts prototips skārienjutīgai monitoru sienai, kas pamatā izmanto modificēto Infiniviz sistēmas arhitektūru.High-resolution display systems are used to present information to users on a large display surface, ensuring the inclusion of all contextual data that is stored in a single displayed image. Infiniviz is a virtual machine based high-resolution display wall system that offers easily accessible reconfiguration and scalability options compared to other available solutions. The main limitation of the Infiniviz system lies in its interaction capabilities with the display wall content, which is accomplished using a mouse and keyboard. Within the scope of the work, the touch-sensitive display wall system architecture is proposed. The possibilities of multi-touch event processing in the Linux operating system and their simulation capabilities in the VirtualBox virtualization platform were explored and documented. An overview of the Infiniviz solution was created. The prototype for a touch-sensitive display wall system was developed, primarily based on the modified Infiniviz system architecture
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