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HDR Tone Mapping for Low-Light Conditions
Macejka, Lukáš ; Polášek, Tomáš (referee) ; Čadík, Martin (advisor)
This bachelor's thesis focuses on the development and implementation of three specific tone mapping methods into the existing TMS system. The tone mapping process involves converting images with high dynamic range to images with low dynamic range. Its importance lies primarily in its ability to display images originally with high dynamic range on devices that only support standard dynamic resolution. The work thoroughly explains the basic principles of digital imaging and the methods used in this process. Each of the implemented methods is described in detail, and their results are subsequently compared in terms of the quality of the resulting images. The goal of the work is not only to adapt the image according to specific requirements but also to integrate new techniques into the system, which should lead to improved functionality and overall visual quality of the image outputs.
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Network Traffic Encryptor on Linux Platform
Havlín, Jan ; Sysel, Petr (referee) ; Hajný, Jan (advisor)
This bachelor thesis focuses on providing encrypted communication between two Linux operating system stations. It involves encryption using the AES-GCM-256 cipher, which uses a hybrid key derived from three separately generated keys. The methods for generating these keys are Quantum Key Distribution, CRYSTALS-Kyber and Elliptic Curve Diffie-Hellmann. Thus, we use functions of three types of cryptography - classical, quantum and post-quantum. The paper also deals with the extension of the functionality of the original cryptography to authenticate the communicating parties using certificates and deployment of the encryptor in practice.
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Aplikace mravenčích algoritmů
Olszar, Patrik ; Sedlák, David (referee) ; Bidlo, Michal (advisor)
This bachelor’s thesis focuses on the implementation and optimization of the ant colony algorithm in C++ for solving the traveling salesman problem (TSP) involving tens of thousands to hundreds of thousands of cities. Due to the high memory demands of traditional ant colony algorithms, which have a exponential expansion of the pheromone matrix, a restricted pheromone matrix was implemented. This technique effectively limits the memory size needed for the pheromone matrix and thus enhances the scalability of the algorithm. Additionally, the work uses techniques such as MAX–MIN, ant parallelization, dynamic adjustment of alpha and beta parameters, a nearest neighbor list, and VCSS. The results achieved a final path that is within 3.5-5% of the optimal solution.
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Viewing of Text Files for Altap Salamander
Pryč, Jan ; Kocman, Radim (referee) ; Křivka, Zbyněk (advisor)
This bachelor thesis encompasses the analysis and implementation of the Syntax Highlighting plugin for Altap Salamander—a well-known file manager for Windows operating systems. The designed plugin is implemented in C++ and intended for syntax highlighting of source files. The goal is to create a tool that can help users work better with source codes and increases efficiency within the Altap Salamander environment.
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Control and acquisition of data from camera sensor OV2312
Kováč, Dávid ; Kříž, Petr (referee) ; Přinosil, Jiří (advisor)
This bachelor thesis deals with the implementation of a driver for the camera sensor OV2312 into the libcamera framework, with the creation of an API interface that allows direct frame capture from a camera in the C++ language and with the creation of a program for demosaicing raw data from the camera sensor for the Raspberry Pi platforms. The aim of this thesis is not only the creation of software that would allow the camera sensor OV2312 to work with Raspberry Pi computers, but will also provide extended control options. The theoretical part describes the single board computers Raspberry Pi, the Libcamera library, the demosaicing process and the troubleshooting procedure. The output of the thesis is a modified Libcamera library that allows the user to capture images and change the parameters of the camera sensor. The created library for direct access to the camera in the C++ language allows to expand the capabilities of the camera sensor. The program for demosaicing provides the user the ability to convert raw data into images.
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Object detection using ToF camera
Hlaváč, Martin ; Bastl, Petr (referee) ; Valach, Soběslav (advisor)
This thesis is about computer vision using a ToF camera. The thesis summarizes the history of ToF cameras and their use. The text also includes the parameters of the cameras I worked with and describes the used libraries, OpenCV and wxWidgets. The text also describes the proposal and subsequently the description of the created application intended for counting people. The work also includes a description of the functionality of the designed application and a proposal for possible further modifications of the application.
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Experimental Audio Effect Based on Dynamic Signal Filtering
Leitgeb, David ; Miklánek, Štěpán (referee) ; Schimmel, Jiří (advisor)
The aim of this thesis is the implementation of an experimental audio effect based on dynamic signal filtering. Two implementations of the audio effect were made, the first one using the Matlab environment and its Audio Toolbox extension, and the second one in the C++ programming language using the JUCE framework. The main digital signal processing types present in the proposed audio effect include: frequency filtering, signal delay and modulation of parameters using low-frequency oscillators. The initial prototype of the audio effect mainly serves to verify correct functionality of the proposed algorithms. The result of the second implementation is a fully functional plug-in module usable, for example, for music production. Both versions are available in the VST format, which can be used with numerous digital audio workstations. The thesis is divided into three main parts: theoretical introduction, implementation of the audio effect, and demonstration of its functionality. Theoretical introduction describes several areas of digital signal processing which are crucial for the correct implementation of the individual components of the audio effect. Implementation of the proposed audio effect is described in the following part of this thesis. Description of the implementation in Matlab is mostly done by showcasing parts of the source code. The C++ version of the audio effect is for the most part described verbally. The last part of this thesis focuses on the demonstration of both versions of the proposed effect. This part features several graphical examples demonstrating various use cases of the proposed effect. Audio files corresponding to these examples are included in the appendix.
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Hybrid key-combiner for network traffic
Mogrovics, Alexander ; Dzurenda, Petr (referee) ; Ricci, Sara (advisor)
Klasická kryptografie se opírá převážně o celočíselnou faktorizaci (IF), která využívá RSA, a problém diskrétního logaritmu (DLP), na jehož principu funguje protokol Diffie- Hellman. Bezpečnost těchto problémů je ohrožena nástupem kvantových počítačů. Například Shorrův algoritmus je schopen řešit IF i DLP v polynomiálním čase. Cílem této práce je prostudovat schémata, která patří do klasické kryptografie a postkvantové kryptografie, aby bylo možné implementovat navrhovaný hybridní slučovač klíčů. Tento slučovač klíčů využívá klíče ze schémat QKD, Kyber a ECDH a interně používá SHA-3 a HMAC.
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Augmented Reality in Industrial Production and Maintenance
Kajan, Matej ; Janáková, Ilona (referee) ; Horák, Karel (advisor)
This paper seeks to explore the possibility to utilize XR (extended reality) in industrial assembly. The aim is to implement a system, which is able to visually navigate the operator during the product assembly process by the means of object recognition and image augmentation. The first chapter presents the use-case of augmented reality in the industry. The next part consists of research on the topic of augmented and virtual reality devices and provides a brief comparison of the current state of the art. Afterwards, a methodology is presented for object recognition of an arbitrary object. The implementation is able to detect the object in real-time, is resilient to occlusion and contains the information about the object’s orientation.
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VST granular plugin with experimental input and output settings
Kalinič, Jan ; Dlouhý, Dan (referee) ; Indrák, Michal (advisor)
This thesis discusses the development of a plug-in module that is able to implement granular synthesis with help of experimental methods of parameter value settings. Graphic designs and schemes were created in the vector graphics editor Inkscape. The separate plug-in was programmed in C++ language using the JUCE framework and VST3 technology. With a use of this module, granular synthesis can be performed over a predetermined sample, but also over the stream of an audio channel of a digital audio station. The module also includes blocks with other types of sound synthesis, which can also be modified in experimental ways. Thanks to its properties, the plug-in can be applied as an effect over one sound channel in the mixing section of an audio station.
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