Examinando por Materia "(computer)"

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    Ítem
    Agents as tutors in augmented reality
    (2003-01-01) Álvarez, N.; Trefftz, H.; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las Comunicaciones
    Interaction between virtual entities and human beings should be similar to the normal interaction between human beings. Verbal interaction is the usual way of interaction among humans, but the interfaces that allow verbal communication between a human being and an agent (virtual human) have a limited vocabulary, need a lot of training and are expensive. In this paper we propose an Augmented Reality System with an unidirectional interface between an agent and a person. By using gestures, animations and adequate texts the agent can show a user how to perform a simple task. We hope that the tests to be conducted will show how useful this unidirectional interface is.
  • No hay miniatura disponible
    Ítem
    Development of a tongue machine interface for quadriplegic patients
    (DESIGN SOC, 2017-01-01) Velásquez-López A.; Velásquez-Rendón D.; Amaya-Quiroz J.S.; Jimenez-Franco L.D.; Trefftz H.; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las Comunicaciones
    This article presents the development and validation of a wheelchair mobility solution. The solution is based on a Tongue Machine Interface (TMI) involving the use of Force Sensing Resistors (FSRs). The semantics and functionality of the development are compared with two other interfaces: a Joystick and a Brain Computer Interface (BCI) implemented on the same wheelchair. Each development is described from the electric, mechanic and informatic domains. Surveys and user's tests were performed in order to explore which technology had a more positive impact on the mobility of quadriplegic persons in terms of effectiveness, better ergonomics, lower costs and better functionality. The quantitative and qualitative results are described and analyzed.