Michal Krumnikl

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This paper is concerned with the use of the level set methods in image segmentation. It is known that the reinitialisation is sometimes needed for the correct function of these methods. This step, however, is problematic both from the theoretical and from the practical point of view. In this paper, we present a modification of the well known Chan and Vese(More)
RFID tags are nowadays used for granting access to buildings, tracking goods, persons and animals, in electronic toll collection systems, mobile payments, and other application areas. The purpose of this paper is to propose a solution that is capable of detecting fake (cloned) low cost 125 kHz RFID tags. The paper is focusing on detecting clones and(More)
Big graphical screens are becoming more common as their prices have significantly dropped in the recent years, providing advertisements, traffic information, timetables, navigation, and other information services. This paper describes a construction of a cheap alternative to the expensive commercial products. This paper provides a technical solution for a(More)
Recent studies concerning bryophyte canopy structure applied various modern, computer analysis methods for determining moss layer characteristics drawing on the outcomes of a previous research on surface of soil. Surface roughness index Lr was hereby used as a monitor of quality (and condition) of bryophyte canopy. We explored stereo photogrammetry, a(More)