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Pulse Visualization in Videosequence of Face
Bernátek, Pavel
Eulerian video magnification method may be used for visualization of the pulse in the videosequence of face. This article describes its utilization with combination of Viola-Jones face detection algorithm and Kanade-Lucas-Tomasi algorithm for tracking faces in the videosequence.
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Improvement of Bit Error Rate in Free Space Optical Link
Novák, Marek
The article describes an inovative bit error rate reduction technique principle and its practical implementation. The design is implemented in an FPGA and can be combined with other more conventional BER reduction techniques. The presented approach benefits from properties of an optical channel which a general RF channel does not have.
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Textile SIW Rectangular Ring-slot Antennas for Off-body Communication
Vašina, Petr
In this paper, a textile SIW rectangular ring-slot antenna for the ISM frequency band 5.8 GHz is proposed. The antenna radiates a linearly polarized wave with the maximum radiation in the perpendicular direction to the antenna plane. The antenna is fabricated on the soft-shell fabric in the two versions. In the first version, the conductive layers were fabricated by a self-adhesive copper foil. In the second version, the conductive layers were fabricated by the screen printing on a foil ironed on the soft-shell fabric. Experimental results prove that the proposed antenna fabricated by copper foil achieves the impedance bandwidth of 3.1 % for the reflection coefficient less than -10 dB and the gain of 6.91 dBi. While screen printing antenna achieves the impedance bandwidth of 2.93 % for the reflection coefficient less than -10 dB and the gain of 7 dBi, respectively.
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Numerical Analysis of the Lightning on Small Aircraft
Krutílek, David
This paper deals with numerical analysis of lightning stroke effects on aircraft. Computations are implemented by the use of the time-domain solver (FIT). Attention is turned to a simple model of a composite nose part of the airplane EV-55. The analysis of the model itself is performed for two fundamentally different basic conceptions of a possible protection against direct effects of lightning.
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Analysis of Whirling of Gas Flow within the Specimen Chamber of ESEM
Bayer, Robert
The usage of an Environmental scanning electron microscope (ESEM) brings the possibility of studying many kinds of materials and chemical reactions never studied before. In this article there are compared and analyzed several simulation results of gas flow in the specimen chamber of ESEM with high gas pressure throughout the whole volume except on its optical axis, where low gas pressure is needed.
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Person Following by Spot Light Using Camera
Rajnoch, David
This paper describes design of person tracking system connected to spot light fixture. System is able to track actor or narrator walking on stage in theatre. System is designed to be easy to use and configure. Several issues connected with such tracking is mentioned in text below.
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The Simulation of Effect of MR Pulse Sequences on the Measurement Object Temperature
Kosková, Markéta
This paper deals with a heating tissues problem of the measured object in magnetic resonance. This is the consequence of using MRI pulse sequences. At the beginning of this paper is introduction to this topic and the ways of gathering the data necessary for the further processing. In experimental part of this paper the program for object heating simulation in MRI is proposed. This should help with planning the sequences so the researcher does not have to wait for the object to cool down, and also create the better conditions for the experimental animals to survive the process.
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Signal Filtration for Detecting Electromagetic Emission
Podshivalov, Aleksandr
There are many methods to describe and study geological processes. This paper deals with a data measured by a loop antenna in a dripstone cave. The measuring system, the sequence of the experiment, and result of signal filtering and spectral analysis were described. Several artificial noise sources in different frequency of signal spectrum bands were found. Signal filtering was carried out. On the basis of the filtered signal central moments during a few days were calculated.
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