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Embedded QR code generator with a graphic OLED display
Lakomý, Tomáš ; Krajsa, Ondřej (referee) ; Hanák, Pavel (advisor)
This master’s thesis deals with coding information and QR codes generating. There is described operation principle of QR codes for this purpose, and design of the equipment. This device is able to encode the information received through the serial port and display it in the QR code on the OLED display. Microprocessor is part of the device, so there is outlined the procedure for programming and testing equipment.
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Advanced QR-Code reader for Android
Kubík, Martin ; Přinosil, Jiří (referee) ; Šmirg, Ondřej (advisor)
The aim of this diploma thesis was to created application for detection and decoding QR codes using devices with the Android Operating System. For preprocessing of the visual field camera is used OpenCV library. Designed preprocessing string searches a perspective transforms possible QR codes. This is suppressed a shape distortion QR code that would otherwise reduce the successful decoding. At the same time the preprocessing string applied unsharp mask, which reduces the effect of motion blur image caused by the camera motion. Thus preprocessing scene is finally decoded using ZXing library. Described manner it is possible to achieve a higher success rate detection and decoding of QR codes than other conventional QR readers.
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Monitoring System Communicating with Mobile Device
Ilavský, Filip ; Šimek, Václav (referee) ; Očenášek, Pavel (advisor)
This thesis deals with design and implementation of hardware peripheral measuring temperature, and implementation of client application, displaying the measured data. Wireless communication between the peripheral and the client is implemented under the protocol Bluetooth Smart (version 4.0 and higher) and secured by a security protocol against the attacker capturing this communication. The result of this thesis is a fully functional peripheral prototype measuring temperature and application displaying this temperature, designed for iOS version 8.0 and higher.
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Upgrade of fakturyonline.eu Service
Jahoda, Vojtěch ; Skála, František (referee) ; Szőke, Igor (advisor)
Goal of this thesis is modernization and extension of established web portal serving to create and manage invoices. The design and implementation emphasis on feedback from users so changes are really a benefit and not a burden. Uses wide range of different technologies and implementation is done using incremental model. Analyzes the impact of changes to number of visitors and receives feedback from users.
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2D barcode recognition system
Sedlář, Martin ; Richter, Miloslav (referee) ; Petyovský, Petr (advisor)
This bachelor’s thesis deals with 2D barcode reading. At the beginning a brief overview of the most used barcodes is shown. The work mainly deals with QR codes. Their structure, composition and rules for encoding and decoding are explained. Problems with arrangement of photographic scene are solved too. C++ algorithm for QR code reading is described with usage of the OpenCV library.
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Detection and Recognition of Matrix Code in Real Time
Dobrovolný, Martin ; Juránková, Markéta (referee) ; Herout, Adam (advisor)
This work is dealing with detecting and recongnizing matrix codes. It is experimenting use of PCLines algorithm. PCLines is using Hough transform and parallel coordinates for fast detection of lines. Suggested algorithm with double use PCLines detects sets of parallels and problem with image distorted by with parallel projection is solved by cross-ratio equation. We did some optimizations for realtime running and created experimental implementation. Test results shows, that use PCLines one way to detect matrix codes.
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QR code detection using deep learning
Černohous, Matěj ; Kříž, Petr (referee) ; Přinosil, Jiří (advisor)
This bachelor thesis deals with the design of an algorithm for detecting and decoding QR codes in images using deep learning techniques. The work involved the construction of 2 datasets, a YOLOv7 neural network model for detecting QR codes in images, a YOLOv4-tiny neural network model for detecting position markers of QR codes, and a Python program utilizing these models to read QR codes in images. For evaluation, the algorithm was compared with other options for QR code reading.
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Exercises and problems in linear algebra
ČAPKOVÁ, Klára
The aim of this thesis is to create a collection of solved examples and problems of linear algebra, which could serve as a learning tool for the first-year students of the Faculty of Education of University of South Bohemia in České Budějovice. The most important part of this thesis is the electronic processing of the collection in a program GeoGebra and its visual interpretation of examples and problems by 3D pictures, QR codes and hyperlinks that specify the solutions.
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