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Laser Line Profilometry
Kugler, Jan ; Goldmann, Tomáš (referee) ; Malaník, Petr (advisor)
Profilometr je zařízení sloužící k měření geometrie povrchu. Liší se ve velikosti, přesnosti a rychlosti měření, a ceně. Účelem této práce je vytvořit software knihovnu a uživatelskou aplikaci pro jednoduchý systém složený z kamery a laseru, jehož úkolem bude měřit opotřebení vnitřního povrchu tankových hlavní. Je vypracován matematický popis tohoto systému který knihovna využívá pro určení polohy měřeného povrchu v prostoru. Výsledná knihovna obsahuje nástroje pro identifikaci rysů povrchu. Demonstrační aplikace umožňuje zároveň sledovat snímaný povrch, zpracovaný obraz, i výsledný profil povrchu.
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Wireless Rotary Head for Scanning Internal Surfaces
Horák, Rostislav ; Strnadel, Josef (referee) ; Malaník, Petr (advisor)
The purpose of this project is to create wireless rotary head for scanning internal surfaces. Which includes design and implementation of device with static and rotary parts. The two parts communicate wirelessly and the rotary part is also wirelessly charged. That enables continuous rotation and measurment. Another part of project is data collection from sensors and communication between parts of the device and also with external world. Focus is given to wireless communication using IR light, wireless power transfer and control of stepper motor. Project describes technologies and principles on which it is based, design and implementation of hardware and software, presentation of achieved results.
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Detection of Material Surface Damage Based on a Photograph
Valko, Marek ; Malaník, Petr (referee) ; Dyk, Tomáš (advisor)
This thesis focuses on the detection of surface defects from photograph using computer vision techniques, convolutional neural networks and models for object detection such as Faster R-CNN and YOLO. Different methods of surface damage detection, image processing, neural networks and machine learning are described in detail. The thesis also compares the performance of these models in identification of surface defects on wood and steel using different augmentations of these datasets.
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Finger Position Tracking in 3D Space
Hegr, Miloš ; Šimek, Václav (referee) ; Malaník, Petr (advisor)
The aim of this work is to create a universal system for measuring data describing position in 3D space. This paper provides a theoretical overview of position description in 3D space and shows the possibilities of position reconstruction from sensor data. It gives a closer look at the RingOne hardware device, and finally proposes and implements a system for finger position reconstruction using this device. This system consists of the firmware for the RingOne device, a C language library allowing easy communication with the measuring device and a protocol defining the way data is transmitted and how the measuring device is configured. This work is also complemented by a modified Spacenavd driver for easy presentation of the measured data.
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Biometric System Security Using Blockchain Technology
Žiška, Marek ; Drahanský, Martin (referee) ; Malaník, Petr (advisor)
Táto práca analyzuje existujúce protokoly používané na dosiahnutie konsenzu v blockchain technológiách, popisuje koncepty biometrických systémov, identifikuje ich bezpečnostné hrozby, predstavuje existujúce riešenia zabezpečenia biometrických systémov. Na základe týchto zistení navrhuje decentralizovanú verziu biometrického systému, ktorý využíva váhovaný protokol PBFT a blockchain na zlepšenie bezpečnosti ``Feature Extractor'' a ``Matcher'' modulov klasického biometrického systému. Blockchain je charakterizovaný ako systém zaznamenávania informácií, ktorý zaisťuje bezpečnosť, nemennosť a transparentnosť v distribuovanej sieti. Priame využitie blockchainu na zabezpečenie citlivých údajov, akými sú aj biometrické údaje, sa nepredpokladá ako najvhodnejšie využitie, no jeho integrácia v rámci procesov jednotlivých komponentov biometrických systémov sa javí ako dobrá možnosť. Nášmu návrhu sa podarilo zmierniť priame útoky na zabezpečované komponenty a útoky na kanály, ktoré ich spájajú, a na kanál, ktorý spája ``Matcher'' s externou aplikáciou.
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Firmware for Testing Platform JaQT
Veverka, Jiří ; Drahanský, Martin (referee) ; Malaník, Petr (advisor)
This bachelor thesis is about the JaQT (Just a Quick Test) platform which was developed for simple and fast software-hardware testing. The theoretical part of this thesis is describing used MCU, control board, peripherals and interfaces. The USB protocol and its CDC ACM class which is used for interfacing the device to enable communication with the board is described in this part as well. In the practical part is described how the JaQT was implemented, debugged, tested, used and evaluated.
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Manipulator Control for Acquisition of the Eye Retina
Malaník, Petr ; Dvořák, Michal (referee) ; Drahanský, Martin (advisor)
To use the image of the retina for biometric or medical purposes, it is necessary that the image is of the highest quality and ideally covers the largest possible area. It is therefore necessary to move the sensing device to the most suitable position while ensuring its stability. A laboratory handling platform is used for this purpose. The platform is moved by stepper motors. A control board equipped with a microcontroller has been developed for their control, which allows very fine movements. The theoretical accuracy of the manipulator is up to 20 nm. Since it is necessary for sensing, to have proper retina illumination, the control system also includes adjustable illumination elements in the infrared and visible spectrum. The resulting system allows scanning of the retina of the eye from multiple angles and thereby effectively increase the area on which it is possible to further look for diseases or biometric features.
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Electronic Platform of the System for Eye Retina Acquirement
Malaník, Petr ; Hájek, Josef (referee) ; Drahanský, Martin (advisor)
This work deals with a control of the platform which is used for scanning of the eye retina. The purpose of this platform is the three-axis motion, camera sharpening and a controlling of LEDs to illuminate the eye. Within this is solved the issue of stepper motor control, LED brightness control and communication with a microcontroller. Part of the thesis is the programming of STM32, i.e. 32-bit microcontroller of STMicroelectronics in C/C ++ using HAL abstraction layer and Python 3 demo application.
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Car Movement Measurent on Carrera Racing Tracks
Šíma, Vojtěch ; Malaník, Petr (referee) ; Rydlo, Štěpán (advisor)
The aim of this bachelor thesis is to design a measuring device that allows to measure quantities such as speed, acceleration and centripetal force while the car is moving on the Carrera racetrack. An embedded system will be created for measurement, where the main result is a printed circuit board that was created and mounted according to a schematic design composed of currently available electronic components. As the board moves along the race track, data is then recorded based on the implemented program, which is stored on a memory medium and later processed for a suitable visual presentation. Based on this data, it is then possible to analyse how the model behaves when moving on the autotrack and which factors have an effect on this movement.
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Digital Audio Steganography
Kabelka, Petr ; Malaník, Petr (referee) ; Strnadel, Josef (advisor)
The field of steganography deals with concealing information with the goal of hiding their very existence. The goal of this work is to create a summary of existing digital audio steganography methods and implement some of them. This work presents easily extensible and usable multiplatform library for audio steganography written in the Python programming language and a program that uses it. At the end of this work are the implemented methods compared against each other and against the published methods. Because it is hard to find concrete implementations of various published methods, the presented library enables almost anyone to easily use the implemented steganographic methods and to continue working on research in this field without the need to reimplement all of them.
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