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Segmentation in the color fundus imges
Malínský, Miloš ; Jiřík, Radovan (referee) ; Kolář, Radim (advisor)
Optic nerve head and macula are important structures in fundus images. Detection and measurement plays crucial role in several diagnosis methods of optic disease. This work is focused on the detection of the central point of macula and optic nerve head, where the inner border is detected too. There are many methods for extracting this structure in retinal images. Due to the unique properties of each acquisition technique, a single generally acknowledged detection algorithm does not exist. The whole detection process is described from preprocessing through segmentation towards postprocessing. Presented methods are based on the combination of correlation techniques, Hough transform, active contours and morphological operations. The detected contours of the optic nerve head are evaluated and quantitatively compared with the contour drawn by experienced ophthalmologist. The master thesis contains quantity of images that help to describe detection methods.
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Porous elements based on granular materials and inorganic binders
Bulejko, Pavel ; Dohnal, Mirko (referee) ; Svěrák, Tomáš (advisor)
Tato diplomová práce zkoumá možnosti tvorby porézních struktur za použití partikulárních materiálů pojených anorganickými pojivy bez dodatečné tepelné úpravy vypalováním. Jako základní pojiva byly použity portlandský a hlinitanový cement a pojiva na bázi alkalicky aktivovaného metakaolinu (geopolymeru). Jako základní kamenivo byl použit karbid křemíku v různých frakcích podle velikosti částic. Byly taktéž použity další zrnité materiály, např. křemenný písek anebo odpadních materiálů (mleté sklo a porcelán) roztříděných do frakcí podle velikosti částic. Byl sledován vliv složení a množství kameniva na vytváření porézní struktury a tím i na mechanické vlastnosti, které byly testovány pomocí mechanických zkoušek. Pevnostní zkoušky byly provedeny na trámečcích 20 × 20 × 100 mm připravených z testovacích směsí. Granulometrické a fázové složení vstupních surovin bylo studováno metodou laserové granulometrie resp. RTG difrakce. Porézní struktura byla studována metodami rtuťové porozimetrie, dále pomocí světelné a rastrovací elektronové mikroskopie a taktéž pyknometrickou metodou. V rámci charakterizace přepážek (terčíky o průměru 90 mm) připravených z jednotlivých materiálů bylo provedeno stanovení efektivní permeability průtokem vzduchu. Dále byly provedeny testy vzlínavosti kapaliny v připravených materiálech. V závěru práce byly provedeny pokusy o filtraci jemných suspenzí přes uvedené přepážky.
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Possibilities of using filtration in lost wax technology
Boček, Vítězslav ; Soukupová, Lucie (referee) ; Horáček, Milan (advisor)
Final thesis, elaborated within the bachelor study field of Manufacturing technology, deals with literary analysis of using filtration in lost wax technology and with designing of best gating system for those filters. As result of this thesis the best criteria for choosing the best filter for aplication in lost wax casting and literary study maping possibilities of locating those filters in gating system was compiled.
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Implementation and analysis of control circuits in MATLAB/Simulink
Hanuš, Tomáš ; Houška, Pavel (referee) ; Singule, Vladislav (advisor)
The thesis is focused on comparing the characteristics of the most common types of controllers. This comparison is done in MATLAB / Simulink to model the DC motor. First, in the thesis, theoretical description of all structures controllers that are tested. This is specifically the PID controllers, PSD, PI-D, PS-D, S-PD, I-PD, PID filtering of derivative and PSD also with this filtration. Then there is the function given the DC motor and its mathematical description. In the last section of the theoretical part describes the different methods of setting regulators. In conclusion, this thesis compares the structure of individual regulators. There are the results. A comparison of their behavior with position control of DC motor.
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Measurement of Deflection of Filtration Fabric
Baňoch, Ondřej ; Gajdoš, Petr (referee) ; Brandejs, Jan (advisor)
This bachelor thesis deals with measurements of deflection of filter fabrics of rotating disc filters segment. The main goal is established dependence of deflection of filter fabrics of the pressure at different preload. First part reviews different types of filter devices and their functions. Main focus is on rotation filter discs and their rotation parts. In the next part different filter fabrics are described, different ways of their production and examination of some of their characteristics. The measurements of deflection of fabrics are documented as well as used methodology. In the final part the data obtained from the measurements are evaluated and possible application in manufacture is discussed.
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Technology sputtering of flue-gas
Hladík, Petr ; Brázdil, Marian (referee) ; Hrnčířová, Michaela (advisor)
The object of this bachelor’s thesis is to create a research in field of flue gas scrubbing technology. In the first part, there are briefly outlined issues of size and shape of particles present in flue gas after combustion. Next part focuses on basic general characteristics of separators. Main part treats of individual types of separators. Following chapters deal with emission limits in Czech Republic and future development of the field. Thesis is concluded by sample calculation of the cyclone separator.
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Ball and Beam model
Lipus, Jan ; Zbořil, Miroslav (referee) ; Marada, Tomáš (advisor)
The goal of this thesis is to project and realize a model of a ball and beam. The system is controlled by an programmable logic computer and by an electronics with microcontroller. System is possible to use like a helping instrument for a teaching. The thesis describes the design, construction, electronics and control element with a visualization of the measured quantity.
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The Operation Assessment of Filtration Units
Hanušová, Veronika ; Biela, Renata (referee) ; Kučera, Tomáš (advisor)
The first part of this bachelor's thesis deals with knowledge of water works filtration gathered from Czech and foreign literature. Following this information is a group of criterions evaluating the working of filtration units themselves. Water treatment in Hrobice and Kroměříž is assessed in the second part of this thesis.
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