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Implementation of Deep Learning Algorithm on Embedded Device
Ondrášek, David ; Boštík, Ondřej (referee) ; Horák, Karel (advisor)
This thesis deals with the implementation of inference model, based on the methods of deep learning, on embedded device. First, machine learning and deep learning methods are researched with emphasis on state-of-the-art techniques. Next, the best suitable hardware had to be selected. In the conclusion, two devices are chosen: Jetson Nano and Raspberry Pi. Then the custom dataset, consisting of three classes of candies, was created and used for training custom inference model through the transfer learning technique. Model is later used in the application, capable of object detection. Application is implemented on Jetson Nano and Raspberry Pi and then evaluated.
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User interface for an expert system
Kořínek, Lukáš ; Boštík, Ondřej (referee) ; Jirsík, Václav (advisor)
This bachelor's thesis is about design and implementation of an expert system user interface. Concerned system is a universal rule-based diagnostic expert system called NPS, which has been developed at FEEC BUT. The interface has been created as a bilingual web application based on modern technologies, which might bring the opportunity to reach variety of devices and a broad user audience. It also enhances the system with means of user authorization, history browsing, user management, knowledge management and more. The application runs on faculty's infrastructure and is undergoing active testing by both physical users and automated tests. Theoretical part of the document describes knowledge and expert system problematics, followed by properties of the NPS system and discussion about web technologies (actual trends in the field, client to server communication, testing strategies and security). Practical part then consists of created interface overview, system architecture description, implementation details, testing and steps used to deploy the application on faculty's network infrastructure.
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Software interface for database files
Novák, Adam ; Boštík, Ondřej (referee) ; Uher, Miroslav (advisor)
The bachelor thesis deals with the way how to access database files with the extension (* .shk), (* .sin) and (* .rau) based on Microsoft Acces 2.0. Document these files and create a software interface. The interface creates the given types of database files. Uploads measurement settings to RMS device measurement files. After the measurement, it extracts data from the database, which can then be further evaluated.
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Deep Learning Algorithms on Embedded Devices
Hadzima, Jaroslav ; Boštík, Ondřej (referee) ; Horák, Karel (advisor)
Táto práca popisuje v súčastnosti široko používané architektúry a modely pre Hlboké Učenie, riešiace úlohu detekcie a klasifikácie objektov vo videu. Dôraz tu bude kladený na ich použiteľnosť na vstavaných zariadeniach. Postupne preberieme kroky a odvôvodňovanie pri výbere najlepšieho vstavaného systému pre našu aplikáciu. Ukážková aplikáci pozostáva hlavne z detekcie vozidiel a detekcie voľných parkovacích miest s využitím algoritmov Hlbokého Učenia. Táto aplikácia umožňuje monitorovať počet vozidiel, nachádzajúcich sa na parkovisku a zároveň rozhodnúť, či sa nachádzajú na prakovacom mieste alebo nie. Následne tu budú prebrané kroky nutné ku konfigurácii zariadenia s dôrazom na optimalizáciu hardvéru pre dosiahnutie čo najväčšej rýchlosti. V ďaľšej časti bude poskytnuté porovnanie vybraných modelov, ktoré budú porovnávané hlavne v kategóriách ako rýchlosť alebo F1 skóre. Najlepší kandidát bude použitý na riešenie našej aplikácie a následné testovanie jej vlastností s názvom Inteligentné parkovisko.
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Photo conversion to black and white
Pieger, Matúš ; Boštík, Ondřej (referee) ; Richter, Miloslav (advisor)
This bachelor's thesis describes the designing of algorithms for detection, processing and conversion of desired objects from input color images to grayscale or black and white domain. The input images are divided into two groups, where the first group consists of sudoku images and other brain puzzles. The second group contains images of paper documents. The thesis analyses imperfections of input images and their effect on the building and functionality of each of the programs. Subsequently, it looks for solutions of a reliable detection of desired objects and correction of their geometric distortions. For a better readability and toner saving when printing the output images respectively, the thesis gives answers as to how to erase unwanted shadows and in which way is it possible to perform bit depth reduction to a chosen number.
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Creating A Random Characters For Captcha
Schemes From Existing Fonts
Bostik, Ondrej
For nearly a two decades, development of new mechanisms for securing web applications from unwanted traffic caused by automated programs called CAPTCHA schemes are under constant improvement. As significant fraction of this defense mechanisms are based on known issues of Optical Character Recognition methods, attackers must help to improve current algorithms to overcame the security measures. The focus of this work is to present an idea of randomly generated pseudo characters for purpose of forming the text-based Captcha challenges. The main part of this article is dealing the problem of transforming the common computer fonts into abstract characters.
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Tube welding detection
Hvizdák, Lukáš ; Boštík, Ondřej (referee) ; Honec, Peter (advisor)
HVIZDÁK, Lukáš. Tube welding detection. Semester thesis. The aim of the Semester thesis is to design and select components for welding detection on the tube to increase reliability and accuracy of detection than the current three-point light intensity system. There are components for the weld detection system. There is also a proposal for a test site and a proposal for welding detection methodology. In the conclusion are discussed results of the thesis.
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Defect detection
Horák, Martin ; Boštík, Ondřej (referee) ; Richter, Miloslav (advisor)
Vizuální inspekce desek plošných spoju (DPS) lidmi se stává nemožná z důvodu zvyšující se komplexity a miniaturizace desek plošných spoju. K dosažení vysoké spolehlivosti DPS jsou výrobci nuceni vyvíjet nové metody inspekce, které by zajistily kontinuální kontrolu každé desky a oddělily ty, které nesplňují požadavky na jakost. Jednou z možností je použít automatickou rentgenovou inspekci, kterou se zabývá tato práce.
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Tester audio cables
Boštík, Ondřej ; Friedl, Martin (referee) ; Havlíková, Marie (advisor)
This thesis deals with the theoretical knowledge necessary to draft tester audio cables. The first section provides an overview of commercially available devices designed for testing audio cables. The second part is an overview of test cables and connectors, inclu- ding their practical application and its parameters. Next chapter presents development platform Arduino. The last chapter presents tester’s design including a description of its implementation and animation.
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Coaxial multiplexer for automatic measurement of AC current
Boštík, Ondřej ; Klusáček, Stanislav (referee) ; Havlíková, Marie (advisor)
Master’s thesis in the theoretical part deals with literature review on the topic of measurement errors and measurement uncertainties. The practical part deals with the simulation of additional capacitive and resistive load on the amplitude and phase error during shunts based measurement. For this simulation is used mathematical apparatus of cascade matrix of two-ports and their connections. For the actual simulation is used script for MATLAB. Furthermore, the work deals with the design of voltage follower to eliminate simulated errors and its practical realization. The last part deals with the design of the coaxial multiplexer for switching current shunts developed in the Czech Metrological Institute in Brno.
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