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Universal data storage for IoT applications
Kadlíček, Matej ; Myška, Vojtěch (referee) ; Šteffan, Pavel (advisor)
The master’s thesis is written about the topic of data warehouse and the technology associated with it. The aim of the theses was to select programming tools for creating a website. Next aim was to design the functionality, appearence and datastorage. Subsequent implementation of design was done after. Theses was divided into 5 chapters. The first one includes selections of programming tools for a creating a backend. Second chapter includes design of database storage. Third chapter includes design of functionality and user interface. Fourth chapter includes implementation of the application and the last one includes testing.
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Interactive Searching in Online Archive of Visual and Audiovisual Artworks
Kuře, Dominik ; Myška, Vojtěch (referee) ; Schimmel, Jiří (advisor)
This bachelor thesis focuses on development of a web application, which serves as an archive for videos. Each video has a certain amount of keywords. The application uses an already created database and a preinstalled server on which the videos are uploaded. The database was given to the author by his supervisor. Searching through the archive can be done by inputting an expression into a search bar or through a variation of filters that are based on information about each video. The results and the database as a whole are graphically represented by charts, which change their form based on given data. Videos can be played in a video player and a list of similar videos is generated. The list is based on keywords which the videos have in common. The main technologies used in the application are Node.js, React and MariaDB. A good amount of libraries are used for this application, allowing JavaScript to be the primary programming language in all phases of development. The text of this bachelor thesis can be dividen in two parts - theoretical and practical. The first part describes all the technologies and libraries used in the application. An in depth approach was taken especially on those parts of each library which are actually being used in the practical. Apart from the necessary technologies, the reader will be also introduced to libraries and systems which help a programmer with his work such as automatic formatting of code and it's backup, saving different versions of the code or adding static datatypes into JavaScript through TypeScript. The theoretical part should give the reader a summary of how browser applications work and communicate with each other. In the practical part an entire application will be built from scratch. The application will connect four different servers - front-end, back-end, database server and a server storing the videos - and allow them to communicate accordingly. The bachelor thesis also contains information about using different controllers for manipulating the browser.
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Creation of Bluetooth data logger for recording and processing of measured data
Vaverka, Jan ; Myška, Vojtěch (referee) ; Dejdar, Petr (advisor)
The first part of the theses deals with dataloggers and their use in today's world. The second part is dedicated to microcontrollers which are used as a control unit for dataloggers. Individual peripheral devices MCU and their communication interfaces have been described. The next part deals with Bluetooth Low Energy which is used for data broadcasting to the user. Based on the acquired knowledge the microcontroller and sensors were selected. A datalogger was constructed and programmed from selected components, which will measure the properties of ferment during fruit fermentation. Finally, a mobile application was created to download data from the datalogger and then display the data in charts.
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Smartphone application for optical fiber monitoring system
Vaverka, Jan ; Myška, Vojtěch (referee) ; Dejdar, Petr (advisor)
The main goal of this master thesis is to develop a multi-platform mobile application in the Flutter framework for iOS and Adnroid platforms. The application will remotely communicate with a fiber optic monitoring system through a server. In the introduction of the thesis, the issues of fiber optics and fiber optic security options are described. The next section describes the communication options between the application and the server, also the Flutter framework is described. In the practical part, the communication between the application and the server is proposed. A large part of the practical section is focused on the design and programming of the multiplatform application. The last part is focused on testing the communication between the application and the server.
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RAW image debayerization using deep neural network
Balušík, Peter ; Myška, Vojtěch (referee) ; Rajmic, Pavel (advisor)
Táto práca sa zaoberá problémom debayerizácie a to konkrétne debayerizáciou pomocou deep image prior. Deep image prior (DIP) je koncept riešenia bežných rekonštrukčných problémov použitím netrénovaných konvolučných neurónových sietí. Jedinou vstupnou informáciou je obrázok, ktorý bol nejakým spôsobom poškodený. Cieľom tejto práce je zistiť, či je DIP použitelná metóda na problémy debayerizácie. Taktiež bola navrhnutá nová debayerizačná metóda založená na DIP a porovnaná s bežnými debayerizačnými metódami. Rôzne mozaikové farebné filtre (CFAs) boli otestované na zistenie plného potenciálu navrhnutej metódy. Číselné porovnanie bolo spravené použitím rôznych metód hodnotenia. Na základne tohto porovnania, zvolená metóda preukázala podobné, v niektorých prípadoch aj lepšie, výsledky ako Malvarova debayerizačná metóda. Vizuálne, navrhovaná metóda ukázala podobné výsledky k najkvalitnejšej metóde v experimentoch – Menonovej debayerizačnej metóde. Dodatočne, spriemerovanie posledných pár obrázkov optimizačného procesu prinieslo pozitívne výsledky vzhľadom na číselné porovnanie. Aj keď navrhovaná metóda priniesla zaujímavé výsledky, ukázalo sa, že je mimoriadne výpočetne náročná v porovnaní s ďaľšími bežnými debayerizačnými metódami.
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Design of computer exercises for security of information systems
Nakládalová, Kateřina ; Tomašov, Adrián (referee) ; Myška, Vojtěch (advisor)
Nowadays, many services are provided in an online environment through web applications. A large amount of data and sensitive information is thus transmitted through cyberspace, which can be stolen by attackers if the systems that handle it are not sufficiently secure. Education in Information Security is therefore crucial. To this end, a web application in the Java programming language was therefore created to demonstrate attacks aimed at it. The application is constructed using Spring framework and connected to PostgreSQL database. The most common attacks on web applications are demonstrated and described in this thesis which are Brute force attack, SQL injection attack, Cross-site scripting attack and Cross-site request forgery, access control vulnerabilities, sensitive data exposure, data inconsistency in web application and interference with web application parameter manipulation. Specific ways of implementing protection against these attacks are given to ensure their safe use. This work can be used as a useful source of information for web application developers and users who want to gain knowledge about the issues of cyber attacks and thereby reduce the risk of their occurrence.
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Accelerated sensor data analysis using an embedded system with a graphics processing unit
Maczkó, Adam ; Myška, Vojtěch (referee) ; Tomašov, Adrián (advisor)
The thesis deals with two main goals, namely the acceleration of data analysis and the subsequent visualization of this data. The purpose is to speed up the supplied application so that it is suitable for protecting optical infrastructures through real-time analysis of polarization state changes and visualization of its outputs. The thesis describes topics that are important in terms of accelerating computations on the graphics processor, particularly principles of parallelism, parallel programming, processes, threads, and parallel architectures. In addition, the thesis describes the capabilities of the Jetson Nano platform. The output of the thesis is an application that is capable of performing computations on the graphics processor and has a web interface for visualizing the analyzed data. The PyTorch library was used for acceleration on the graphics processor. Visualisation was achieved through the React framework in conjunction with the react-spectrogram and ApexCharts libraries.
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Mobile application for an intelligent beekeeping system
Pecár, Martin ; Myška, Vojtěch (referee) ; Kiac, Martin (advisor)
The aim of this thesis is to design and create an application which will allow beekeepers to manage their hives with a mobile phone.The reason for this is centralisation and clarification of all colected data from visits to the hive, where this data could be later used to create statistics.Furthermore, this app contains ways to notify the beekeeper that there is a need of intervention with the hive using their own alerts and statistics of selected properties of a hive. The result of this work is the previously described application.
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Universal data storage for IoT applications
Kadlíček, Matej ; Myška, Vojtěch (referee) ; Šteffan, Pavel (advisor)
The master’s thesis is written about the topic of data warehouse and the technology associated with it. The aim of the theses was to select programming tools for creating a website. Next aim was to design the functionality, appearence and datastorage. Subsequent implementation of design was done after. Theses was divided into 5 chapters. The first one includes selections of programming tools for a creating a backend. Second chapter includes design of database storage. Third chapter includes design of functionality and user interface. Fourth chapter includes implementation of the application and the last one includes testing.
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Smartphone application for optical fiber monitoring system
Vaverka, Jan ; Myška, Vojtěch (referee) ; Dejdar, Petr (advisor)
The main goal of this master thesis is to develop a multi-platform mobile application in the Flutter framework for iOS and Adnroid platforms. The application will remotely communicate with a fiber optic monitoring system through a server. In the introduction of the thesis, the issues of fiber optics and fiber optic security options are described. The next section describes the communication options between the application and the server, also the Flutter framework is described. In the practical part, the communication between the application and the server is proposed. A large part of the practical section is focused on the design and programming of the multiplatform application. The last part is focused on testing the communication between the application and the server.
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