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Methods for localization of pulsed broadband signal source
Machala, Petr ; Hadinec, Michal (referee) ; Drexler, Petr (advisor)
The topic of this barchelor’s thesis is the analysis of problems regarding localization of partial discharges (PD) and related PD recording, processing and interpretation in time and frequency domain. In majority of cases the occurrence of partial discharges refers to a certain defect in the measured device, therefore in practice (eg large equipment such as oil transformers) it appears to be very useful and economical to determine the exact position, where PDs are formed. To address these complex issues, it is necessary to design the entire measuring chain from PD detection to measured data processing and localization itself. In terms of data processing and PD localization many different localization and detection methods can be applied, some of them are presented in this documentation. These methods are gradually studied, implemented and afterwards tested using the input data of the experiment.
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Localization of the caller in emergency medicine information system
Maleňák, Filip ; Sekora, Jiří (referee) ; Rozman, Jiří (advisor)
Aim of this bachelor’s thesis is to analyze methods that are used for localization of the caller during emergency call to 155 and the importance of an accurate localization during the rescue operation. Describe other methods that can be used for localization of the caller and draft of the solution for use these methods to enhanced localization of the caller. Emergency line is presented by the module of emergency operation center in emergency medical service information system. Proposed solution for enhanced localization of the caller is given by the iPhone application iSOS. The application was designed on requirement of simplicity and maximum efficiency of caller localization in emergency situation.
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Detection, Localization, and Decoding QR Code in Image
Kałuża, Marian ; Juránková, Markéta (referee) ; Herout, Adam (advisor)
This thesis describes the QR Code detector based on detecting edge lines using Hough Transform and point-to-line parametrization. Generally, the presented method can be also used for detecting different types of matrix codes. This approach searches in the accumulated Hough space for evidence of the matrix code as one compound object. It detects parallel lines by finding a concurrent lines' image groups in the transformed space. It contrasts with the common approach which is first detect the lines and calculate the vanishing point afterwards, which omit much of the useful information stored in the Hough space which can be useful for the detection of vanishing points. The purpose of this thesis is a research of methods which can detect the QR Code in spite of rotation, perspective distortion or uneven illumination. The experimental evaluation shows that the presented algorithm is stable and accurate and is tolerant to high degrees of perspective deformation.
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Deep-learning based localization of cardiac arrhythimas in ECG
Khaliullina, Sabina ; Novotná, Petra (referee) ; Ronzhina, Marina (advisor)
The thesis deals with the localization and classification of atrial atrial fibrillation. In Python, a detection method using convolutional neural networks with multi-instance learning (MIL) and the method of local maxima for localization were implemented. Segments from two ECG leads were used. In the binary classification using the first subset and subsequent post processing, the F1 score reached 100 %, in the classification using the second subset 92 %. In the discussion and conclusion of the work, the success of classification and localization was evaluated, the achieved results were discussed and compared the with the results of other authors.
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Energy demands of localization algorithms
Maňák, Jiří ; Červenka, Vladimír (referee) ; Morávek, Patrik (advisor)
This masters thesis deals with technics of localization for wireless senzor networks with a focus on anchor free location algorithm by authors G. Jianquan and Z. Wei. It also describes the available simulations frameworks based on OMNeT++ platform and implementation of the anchor free algorithm in the simulation program Castalia. Furthermore, it deals with the energy demands of this algorithm based on results of simulations that were done for the communication unit IRIS.
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The process of localisation and translation of videogames
Vynar, Illia ; Walek, Agata (referee) ; Šťastná, Dagmar (advisor)
Cílem této práce je analýza procesu lokalizace videoher. Na základě studované literatury je práce zaměřena na to, jak přizpůsobit softwarový produkt (v tomto případě videohru, Zaklínač 3: Divoký Hon) různým kulturám a jazykům, jak zavést novou terminologii a jak přeložit / lokalizovat nové koncepty softwarových produktů, zejména videoher. Bakalářská práce odhaluje problémy, ke kterým obvykle dochází v průběhu překladu a lokalizace názvů herních postav, názvů míst, idiomů, humorů, prokletých slov, příběhů, fixních výrazů, lokalizace slov nebo jmen, které byly vynalezeny ve zdrojovem jazyků. A řešení těchto problémů na příkladu lokalizace hry “Zaklínač 3: Divoký Hon”. Vysvětlujíce nejen způsob, jakým se CD Project RED zabýval těmito problémy, ale také analyzujíce, proč si vybrali lokalizovat právě tímto způsobem, a ne jiným. Bakalářská práce se skládá ze dvou částí, z nichž první je teoretická, vysvětluje pojem obecně lokalizace a odkazuje na Bernal-Merino a jeho práci “Lokalizace videoher” (2013), Heather Chandler a Stephanie O'Malley a jejich práce 'Příručka hry o lokalizaci', také Dunne, (2006: 1), Cooke (1992: 212-3), Esselink (2000), O'Hagan (2007) a mnoho dalších. Praktická část na příkladu hry ukazuje obtíže, které byly popsány a vysvětleny v teoretické části.
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Comparison of localization limiters for strain-softening
Květoň, Josef ; Vořechovský, Miroslav (referee) ; Eliáš, Jan (advisor)
It is well known, that simulation of crack propagation using the finite element method is dependent on mesh discretization. The thesis compares two approaches, that are designed to reduce the mesh influence: (I) the crack band model and (II) the nonlocal model. These localization limiters are applied to simulate three-point-bent beam with and without notch. The model of the beam is made with several variants of mesh discretization differing in finite element size and inclination. Performance of both localization limiters is discussed.
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Node Location in the ZigBee Network
Capalini, Richard ; Očenášek, Pavel (referee) ; Trchalík, Roman (advisor)
The master thesis is concerned with problem of localization of nodes in wireless sensor network WSN implemented by ZigBee technology. The thesis provide description of ZigBee architecture involving signal description. The method of evaluating coordinates basically do not depend on used measuring methods. The method of fingerprinting is included in separated category based on only statistical processing of RSSI data. Determination of coordinates of mobile node always needs finding out range, signal time of arrival (ToA) or angle of arrival (AoA) in respect to anchors node given dimension magnitude. The author found out three possible solutions for range measuring and one solution for angle of arrival measuring useable in context of ZigBee wireless sensor network. Finally the author discuss possibilities and constraints of ZigBee network with used measuring type.
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Room Occupancy Detection with IoT Sensors
Kolarčík, Tomáš ; Jeřábek, Kamil (referee) ; Pluskal, Jan (advisor)
The aim of this work was to create a module for home automation tools Home Assistant. The module is able to determine which room is inhabited and estimate more accurate position of people inside the room. Known GPS location cannot be used for this purpose because it is inaccurate inside buildings and therefore one of the indoor location techniques needs to be used. Solution based on Bluetooth Low Energy wireless technology was chosen. The localization technique is the fingerprinting method, which is based on estimating the position according to the signal strength at any point in space, which are compared with a database of these points using machine learning. The system can be supplemented with motion sensors that ensure a quick response when entering the room. This system can be deployed within a house, apartment or small to medium-sized company to determine the position of people in the building and can serve as a very powerful element of home automation.
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Wireless Sensor Network Simulation Model in J-Sim Tool
Vrzal, Tomáš ; Morávek, Patrik (referee) ; Šimek, Milan (advisor)
This thesis deals with the issue of wireless sensor networks and communication protocols. Is explained of what the network is composed, what standards are used and in what sectors are most often used. The main scope of work is to introduce with the localization algorithms using in WSN. Algorithms are clearly divided into groups according to the methods used. In work is describes the structure used simulation tools J-Sim, for creating a wireless sensor network. To create network will be then applied different localization algorithms, which must first be implemented in a simulator using Java code. All generated classes and the algorithms are detailed described in the work. Results from simulations are detailed and graphically displays for individual localization algorithms.
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