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Numerical Methods of Image Analysis in Astrometry
Honková, Michaela ; Martišek, Dalibor (referee) ; Zemek, František (referee) ; Druckmüller, Miloslav (advisor)
Velmi přesná následná astrometrie je nezbytným předpokladem sledování blízkozemních objektů, které mohou představovat riziko srážky se Zemí. Tato práce přináší ucelený přehled přesné astrometrie, obsahuje potřebnou matematickou teorii, postup předzpracování snímků v astronomii, a nastiňuje použití filtrů. Navrhuje nové metody pro vyrovnání pozadí snímků před provedením astrometrického měření pro případ, kdy nejsou dostupné kalibrační snímky. Tyto metody jsou založeny na vytvoření syntetického flatfieldu pomocí aplikování filtru na snímek a následné užití tohoto flatfieldu pro odstranění pozadí snímku. Metody byly otestovány na vzorových snímcích a vzápětí použity k získání astrometrických pozic prvního mezihvězdného objektu 1I/2017 U1 ('Oumuamua).
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Detection of car approach speed using camera imge processing
Kovář, Jan ; Číka, Petr (referee) ; Šmirg, Ondřej (advisor)
The thesis deals with digital image processing, from the initial acquisition of digital picture frames, subsequent processing segmentation and algorithms to detect visual shapes on the scene. Image processing is a very broad topic, so here are analyzed for more understanding of the fundamental principles of perception and processing of video signals, image representation, his starting shooting through filters governing digital image processing methods to detect the objects in an image. It is also demonstrated by the size dependence of the object in the image on the distance from the camera, whereby we can determine the speed of approaching or moving away from the object. We will show you the specific determination of the distance we need to know the actual result size of the object. This is because the ratio between the size of the object depending on the distance is the same for each object. Finally, this work presents the resulting image frames for implementation using OpenCV library.
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Development of color filter wheel
Kilián, Ondřej ; Koutecký, Tomáš (referee) ; Hurník, Jakub (advisor)
This bachelor thesis aims to showcase designing process of the device and control software and subsequent realisation of a filter wheel for research applications, which is designed specifically for a ZWO ASI 1600MM camera, ZEISS Interlock® Compact lenses and optic filters produced by company Schneider-Kreuznach. This configuration of camera and lenses doesn’t allow use of existing products on the market.
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Application possibilities of LNVGA programmable amplifier
Sobotka, Josef ; Hanák, Pavel (referee) ; Jeřábek, Jan (advisor)
This thesis deals with the theoretical description of the qualitative characteristics and parameters of some modern active elements, also discusses the theory of signal flow graphs at the level applicable for the following frequency filter design methods. The thesis is also generally discussed the issue with the circuit simulator PSpice modeling theory and voltage amplifiers on the basic 6-levels. The practical part of the work is divided into two parts. The first practical part is dedicated to design four levels of simulation model of components LNVGA element. The second practical part contains detailed theoretical proposals for three circuit structures implementing the frequency filters 2nd order (based on the basic structure of the OTA-C) using signal flow graphs with configuration options of Q and fm based on the parameters of active elements in the peripheral structure and their verification with prepared LNVGA model layers.
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Non-Photorealistic Rendering
Žilák, Jaroslav ; Bartoň, Radek (referee) ; Žák, Pavel (advisor)
The main purpose of this thesis besides providing the reader with basics of non-photorealistic rendering, is concept and possible solution for system realization, which is capable of this rendering using image post-processing. This thesis describes solution that is sufficiently flexible to support use of integrated filters along with the creation of new ones that can be recursively used to create another filters for this type of rendering. Thus part of this thesis is some kind of manual which provide basic syntax description and possibilities of use.
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ECG monitor in LabVIEW
Pavlišta, Libor ; Kolář, Radim (referee) ; Harabiš, Vratislav (advisor)
The main purpose of this work is to get know about ECG signal, its genesis and relationship between mechanical and electrical part of the heart. Furthermore about the detailed disassembly of parts, for example of QRS complex, the determination of faulty statuses, the calculation of heartbeat frequence. We will take a look into the patient's monitors. We will get know about the measuring of ECG signal and how to treat the input signal to eliminate the undesirable components of signal, for example unwanted network noise - so-called network brum. We will study the concept of simple monitoring system with th draft of necessary filter in LabView program. We will construct alarms for some cardiac abnormalities, such as premature heart contractions. We will calculate heart rate. We will retrieve of data from an external source and we will prepare the appropriate graphical user interface.
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Digital controlled dc current source
Miškařík, Vít ; Mišurec, Jiří (referee) ; Vrba, Kamil (advisor)
This bachelor thesis aims to get acquainted with the issue of numerically controlled current sources, individual parts of them, their design options and comparison of the properties of these design options. In this thesis the individual parts needed to construct a numerically controlled DC current sources are analyzed and described, there are their main design relationships and possible achieved accurancy too. In next part there are described selected design options and calculation values of circuit elements. In conclusion there is presented the final schematic of whole source, result of computer function si- mulation, PCB design and measured parameters of really built circuit of numerically controlled current source.
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Demonstrational programs for music record processing
Jonáš, Petr ; Rajmic, Pavel (referee) ; Číž, Radim (advisor)
This bachelor’s thesis describes the processing of music records and signals. Demonstration programs were created in Matlab. In this thesis were created function of equalization, transposition and sound effects. In this thesis was created application for determining the similarity of signals. For both programs was created graphic user interface.
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Inteligent Video-Player
Sabela, David ; Materna, Zdeněk (referee) ; Kapinus, Michal (advisor)
The aim of this bachelor thesis was to create a user interface for displaying interesting or indifferent way significant events from the views of surveillance camera systems. In the first part of the thesis - Theory - technologies useful for the creation of a web application working with video are described. Principles of graphical quality in user interferences are also summarized in this part, as well as explanation of the principal questions of the surveillance camera systems problematics. In the second and third part - Design and Implementation - my own solution of the prototype of inteligent video player is depicted. The resulting prototype is thereafter subjected to examination by several testers whose results are analysedand evaluated in the final part - Testing.
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