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System with Servos Controlled by Microcomputer
Veselý, Miroslav ; Kolář, Martin (referee) ; Zemčík, Pavel (advisor)
The goal of this bachelor thesis was to investigate possibilities of controlling RC servos by amicrocomputer. A part of this thesis was creation of a device for purpose of browsing distant surfaceby a laser. The created device is based on Arduino platform and it is possible to control this deviceremotely by a computer application.
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Application for Sport Group Management
Holcman, Jaroslav ; Tomešek, Jan (referee) ; Kolář, Martin (advisor)
This text describes the process of creating a mobile application for sport club management and its everyday operations. The main goal of the application is to digitize and unite most of common activities in the sport club. Another goal is to create the user interface which will be primarily intuitive and simple to use while providing straightforward ways of usage during most important user use cases. The thesis studies principles for designing user interfaces, analyzes sports team environment and defines the requirements for a software product to support sports club management. The design of the solution follows the analysis of requirements as well as the description of the implementation of the resulting product and its publishing to the real sports club environment. The thesis ends with description of user testing methods and results of the testing which validate accomplishment of defined goals.
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Machinable bioceramics prepared by gelcasting method
Kolář, Martin ; Částková, Klára (referee) ; Trunec, Martin (advisor)
In the diploma thesis, overviews of the existing literature focused on the gelcasting method and based on the findings were prepared aqueous slurries of zirconium oxide for gelcasting method. These suspensions were examined for the influence of the content ceramics powder, type and content of dispersants and volume of initiator on viscosity of aqueous suspensions and process of polymerization. Optimum ceramic suspension had 45 vol.% of ceramic powder which was stabilized by 0,5 weight % of dispersant Dolapix CE 64. Polymerization running at room temperature was initiated by 0,175 weight % of ammonium persufate without accelerator. Microstructure of prepared ceramic blanks and sintered bodies was compared with body prepared by isostatic pressing. For the machining tests were prepared blanks in disc-shaped.
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Visualisation of telemetric data
Kolář, Michael ; Hejtmánek, Petr (referee) ; Zháňal, Lubor (advisor)
The main aim of this bachelor thesis was the creation of an application in the Unity engine, which would enable real-time rendering of a vehicle and its suspension components. The positions and rotations of the individual parts are governed by the data that originate from the Matlab application based on simulation or real measurement.
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Entropic generator of random numbers
Kolář, Michal ; Číž, Radim (referee) ; Burda, Karel (advisor)
This paper is focused on generating random number via entropy generators. There are described sources of entropy on personal computer and described methods of detecting their entropy. There are also described basic operations used for construction and for concept solution this generator under NIST recommendation for personal computer and methods of their testing.
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Machine learning and signal processing
Kolář, Michael ; Fojtášek, Jan (referee) ; Zháňal, Lubor (advisor)
This thesis deals with the possibility of using neural networks in the analysis of a racing vehicle telemetry data. The analysis consists of finding and classifying the driving states of the vehicle as well as reconstruction and prediction of the data signal. The thesis consists of a research of machine learning focusing on neural networks. It describes the main types of the most commonly used neural networks with the description of their structure and their learning process. It also deals with the problem of classification and an in-depth analysis of the signal prediction and reconstruction. The conclusion is devoted to the implementation of the network into a TeleMatrix application.
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Virtual Waiting Room Data Base Storage
Sadloň, Matej ; Brejcha, Jan (referee) ; Kolář, Martin (advisor)
This thesis is part of project called Virtual Waiting Room. It is a cross-platform application which allows users to book a term with a provider without the need to personally wait in a waiting room. The thesis describes the design and implementation of database, library for work with this database, and a client for the administration of providers and waiting rooms. For this purpose, was used technologies such as MySQL, PHP and HTML.
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Mobile System for Text Recognition on Android
Tomešek, Jan ; Kolář, Martin (referee) ; Zemčík, Pavel (advisor)
This thesis deals with creation of a mobile library for preprocessing of images with text which represents a part of a system for text recognition. The library is realized with emphasis on generality of use, efficiency and portability. The library providing a set of algorithms primarily for image quality assessment and text detection was created in this thesis. These algorithms enable a substantial decrease in volume of transmitted data and speed up and refinement of the recognition process. An example application for the Android platform able to analyze composition of foods stated on their wrappings was created as well. Overall, the library (system) simplifies development of mobile applications with focus on text extraction and analysis. The mobile application then provides a comfortable way of food harmfulness verification. The thesis offers a reader an overview of current solutions and tools available in this field, it provides a breakdown of important image preprocessing algorithms and guides him through the construction of the library and the application for mobile devices.
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Technological analysis of the usability of new thermosetting materials for the construction of headlamps
Rašner, Martin ; Kolář, Michal (referee) ; Píška, Miroslav (advisor)
The diploma thesis presents the usability of a new thermosetting material BMC for the construction of a car headlight. In the theoretical part there are described headlights, basic characteristics and properties of plastics focussing on polymer composite materials and material testing. The practical part deals with the processing of test samples for mechanical testing by compression moulding and also with the production of real samples of reflectors and carrier frames by injection moulding. The evaluation is based on comparison of the results of the performed tests of alternative material and the currently used BMC TETRADUR TD 492/2 in HELLA Autotechnik Nova s.r.o. Basic physical-mechanical properties such as strength, stiffness, toughness and hardness are tested and monitored. The reflectors and carrier frames are assembled into the headlight and then tested according to legal and customers´ requirements for climate and vibration resistance and photometry.
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Automatic Video Colorization
Mikeska, Tomáš ; Kolář, Martin (referee) ; Hradiš, Michal (advisor)
This thesis deals with fully automatic colorization of video and images using convolutional neural networks. It summarizes existing approaches, architectures and several objective functions. In this thesis several neural networks with different objective functions are implemented and trained for automatic colorization. The best of them is able to colorize large diversity of scenes and is sufficient to produce coherently colorized video.
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