Browsing Sekce matematiky by Issue Date

Now showing items 1-5 of 5

  • The Enhancement of 3D Scans Depth Resolution Obtained by Confocal Scanning of Porous Materials 

    Martišek, Dalibor; Procházková, Jana (De Gruyter Open, 2017-11-24)
    Scans of porous materials such as concrete ofr cement paste are highly problematic due to its low depth resolution. We propose an averaging method based on the Lindeberg-Levi theorem that improves the final depth resolution.

  • 3D Reconstruction of the Surface using a Standard Camera 

    Martišek, Dalibor (Hindawi ltd, England, 2017-12-17)
    This paper deals with 3D reconstructions of series of partially focused images. Some of these methods are known in case of images which were acquired is small field of view.

  • Joint Rock Coefficient Estimation Based on Hausdorff Dimension 

    Martišek, Dalibor (Scientific Research Publishing, 2017-12-18)
    The strength of rock structures strongly depends inter alia on surface irregularities of rock joints. These irregularities are characterized by a coefficient of joint roughness. For its estimation, visual comparison is ...

  • Registration of Partially Focused Images for 2D and 3D Reconstruction of Oversized Samples 

    Martišek, Dalibor; Druckmüllerová, Hana (Hindawi, 2017-12-18)
    Methods of fracture surface 3D reconstruction from a series of partially focused images acquired in a small field of view (e.g., by confocal microscope or CCD camera) are well known. In this case, projection rays can be ...

  • Notes on iterative closest algorithm 

    Procházková, Jana; Martišek, Dalibor (Institute of Mathematics and Physics, Faculty of Mechanical Engineering, Slovak University of Technology in Bratislava, 2018-03-23)
    Point clouds are commontly used in many areas of technical practice. Nowadays, the common applications are in area of autonomous cars and 3D terrain or object modelling. During the scanning process, the scanning device or ...