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    Wyświetlanie 1-3 z 3
    Tytuł:
    Visibility determination in beam tracing with application for real-time sound simulation
    Autorzy:
    Pałka, S.
    Głut, B.
    Ziółko, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/305801.pdf
    Data publikacji:
    2014
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    beam tracing
    adaptive frustum
    visibility determination
    Opis:
    This work presents some aspects of beam-tracing techniques used in sound simulation. The Adaptive Frustum algorithm, which was designed for detecting obstacles using beam subdivision, was reviewed for its efficiency as well as its accuracy. Some possible improvements have been suggested; however, they do not fully solve the problems of using this algorithm in real-time applications. Improved algorithm implementation was tested in five scenes with different characteristics and varying complexity.
    Źródło:
    Computer Science; 2014, 15 (2); 197-214
    1508-2806
    2300-7036
    Pojawia się w:
    Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Automatic portal generation for 3d audio – from triangle soup to a portal system
    Autorzy:
    Turecki, P.
    Pędzimąż, T.
    Pałka, S.
    Ziółko, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/305690.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    voxelization
    portal generation
    geometry occlusion
    watershed transform
    Opis:
    The purpose of this paper is to investigate an algorithm for generating an auto- matic portal system. This has been accomplished based on a given set of trian- gles. The proposed solution was designed to enhance the performance of a sound beam-tracing engine. This solution can also be used for other areas where portal systems are applicable. The provided technical solution emphasizes the beam tracing engine’s requirements. Our approach is based on the work of Haumont et al. (with additional improvements), resulting in improved scene segmenta- tion and lower computational complexity. We examined voxelization techniques and their properties, and have adjusted these to fit the requirements of a beam- tracing engine. As a result of our investigation, a new method for finding portal placement has been developed by adjusting the orientation of the found portals to fit the neighboring scene walls. In addition, we replaced Haumont et al.’s prevoxelization step, which is used for erasing geometrical details (for exam- ple, thin walls). This was done by smoothing the distance field that, in effect, eliminated incorrectly positioned portals. The results of our work remove the requirement for walls that separate rooms to have a particular thickness. We al- so describe a method for building a structure that accelerates real-time queries for determining the area where a given point is located. All of the presented techniques allow for the use of larger sized voxels, which increases performance and reduces memory requirements (not only during the preprocessing phase but also during real-time usage). The proposed solutions were tested using scenarios with scenes of varying complexity.
    Źródło:
    Computer Science; 2016, 17 (3); 321-352
    1508-2806
    2300-7036
    Pojawia się w:
    Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The CC1 project – system for Private Cloud Computing
    Autorzy:
    Chwastowski, J.
    Grzymkowski, R.
    Kruk, M.
    Nabożny, M.
    Natkaniec, Z.
    Olszewski, A.
    Pałka, H.
    Sobocińska, Z.
    Sośnicki, T.
    Szostak, M.
    Syktus, P.
    Wójcik, P.
    Wojtoń, T.
    Zdybał, M.
    Żabiński, B.
    Witek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/305307.pdf
    Data publikacji:
    2012
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    virtual machine
    cloud computing
    private cloud
    distributed computing system
    Opis:
    The main features of the Cloud Computing system developed at IFJ PAN are described. The project is financed from the structural resources provided by the European Commission and the Polish Ministry of Science and Higher Education (Innovative Economy, National Cohesion Strategy). The system delivers a solution for carrying out computer calculations on a Private Cloud computing infrastructure. It consists of an intuitive Web based user interface, a module for the users and resources administration and the standard EC2 interface implementation. Thanks to the distributed character of the system it allows for the integration of a geographically distant federation of computer clusters within a uniform user environment.
    Źródło:
    Computer Science; 2012, 13 (2); 103-111
    1508-2806
    2300-7036
    Pojawia się w:
    Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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