CEIG18

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https://diglib.eg.org/handle/10.2312/2632545

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Browsing CEIG18 by Subject "centered computing"

Now showing 1 - 4 of 4
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    Experiences From the Development of a Prototype of an Spatial Augmented Reality System
    (The Eurographics Association, 2018) Cárdenas-Donoso, José Luis; García-Fernández, Ángel-Luis; Conde-Rodríguez, Francisco-de-Asís; Ogáyar-Anguita, Carlos-Javier; García-Fernández, Ignacio and Ureña, Carlos
    This paper describes the hardware and software of a prototype of a portable Spatial Augmented Reality system. This prototype is completely autonomous and projects the information on the real world, so that it is visible for a group of users. The system was built using mostly low-cost hardware (Raspberry Pi, plus a camera module and an inertial measurement unit), and the software was developed using C++ and OpenGL ES 2.0.
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    On the Design of a Mixed-Reality Annotations Tool for the Inspection of Pre-fab Buildings
    (The Eurographics Association, 2018) García-Pereira, Inma; Gimeno, Jesús; Portalés, Cristina; Vidal-González, María; Morillo, Pedro; García-Fernández, Ignacio and Ureña, Carlos
    The introduction of Augmented Reality (AR) and Virtual Reality (VR) in the inspection works carried out during the construction of prefabricated buildings can allow the early detection and elimination of deviations in their quality and energy efficiency. These new tools let us change from the traditional note taking on paper to the use of an AR application that allows to make rich annotations. The later on-site or in-office revision of the information taken as well as the remote communication while the inspection is going on can speed up and optimize the detection of errors and the maintenance of quality through the use of AR and VR. In this paper, the work in progress that is being carried out within the SIRAE project is shown. With it, we intend to implement the use of AR annotations for their visualization and modification in real time or later either in situ (AR) or from any other location (VR). The obtained first lab results are quite promising, since the usability of the system, still in development, augurs an easy adaptation of the workers to the new work tool and a substantial streamlining of the inspection processes.
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    A Prototype of Virtual Reality System for the Visualization, Exploration and Modeling of Huge Point Clouds
    (The Eurographics Association, 2018) Ortega-Donaire, José; Segura-Sánchez, Rafael Jesús; Ogáyar-Anguita, Carlos-Javier; Rueda-Ruiz, Antonio Jesús; García-Fernández, Ignacio and Ureña, Carlos
    The use of specific techniques for the management and visualization of huge point clouds is necessary to solve the drawbacks of inefficiency derived from the size of the dataset and the techniques used to visualize it. This work presents a prototype of VR system for the visualization and management of extensive point clouds in 3D with the ability to edit specific points. For this, the tool incorporates multiresolution techniques, which improve the performance and efficiency of the system. The prototype also incorporates the management of the point cloud stored in an unstructured database; so the prototype can request parts of the dataset from the required fractions generated by an octree. This allows the progressive processing of 3D point clouds, which is very useful to control and visualize a large data set in real time.
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    Study of the Influence of User Characteristics on the Virtual Reality Presence
    (The Eurographics Association, 2018) Mayor, Jesús; Sánchez, Alberto; Raya, Laura; García-Fernández, Ignacio and Ureña, Carlos
    In recent years, virtual reality has grown a lot in different areas of application, including ludic, social and research, being used by a large and growing number of users with different profiles. Presence is one of the most distinctive and important features of a virtual reality experience. The aim of this article is to study the most suitable areas of application for users and to analyze the influence of different characteristics of the user's profile in the perceived presence. We have tested the interest applications indicated by 159 subjects and we have designed an immersive virtual reality experience, testing the behavior and performance of 48 users. The results obtained show that gender can influence the perceptual sensation of presence in these types of virtual environments.