National Repository of Grey Literature 200 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Application for Testing Critical Listening Skills
Ecler, David ; Říha, Kamil (referee) ; Schimmel, Jiří (advisor)
My work is aimed at providing a comprehensive overview of hearing testing applications, and thus acquiring the sound engineer’s skill of critical listening. The thesis presents the different types of critical aspects of audio signals, then a summary of the possibilities of testing these critical signals, a description of the different tests and exercises, including the conditions of their performance. The tests are divided into chapters according to their focus. In the practical section, I have programmed some of the tests that can be used to acquire and practice critical listening skills. The tests are programmed in the Matlab App environment.
Conversion of fingerprints captured by a mobile device into a standardized format - image editing
Mucha, Vojtěch ; Říha, Kamil (referee) ; Číka, Petr (advisor)
This bachelor thesis deals with the issue of fingerprint conversion taken by a mobile device into a standardized format. In the present day, mobile devices are used more and more often to acquire biometric data, fingerprints included. Processing and standardization of such data is an essential part of the subsequent biometric analysis. The aim of the work is to design and implement an algorithm which would convert a photo of a finger into a grey scale picture of its fingerprint with distinct papillary lines and subdued valleys. The algorithm is implemented in C++ using OpenCV library and a trained neural network for finger detection from hand image. The achieved results are evaluated according to the algorithms for assessing the quality of fingerprints NFIQ 2 and Innovatrics.
Web application for visualization and analysis of correlation rules deployed in cyberspace
Závišková, Hana ; Říha, Kamil (referee) ; Safonov, Yehor (advisor)
In a world of constantly evolving modern technologies, there is a growing need of developing cyber security strategies to protect digital infrastructures as the number of cyber attacks is rapidly increasing. The main goal of the bachelor thesis is to create a tool for visualizing correlation rules of SIEM systems. The tool is implemented as an extension to an existing web application and aims to allow a security expert or application user to explore user Sigma rules according to different criteria and based on different views. From a theoretical point of view, the bachelor’s thesis focuses on introducing the reader to the basics of cyber security in terms of the motivation for providing security, explaining the basic concepts necessary to understand the content of the thesis and analyzing the perspectives in which cyber attacks can be viewed. It also contains a description of selected cyber attacks, the selection of which is based on the statistics of cyber attacks on the Czech Republic for the first three quarters of the year 2023. This is followed by an explanation of the principles of detection and prevention of cyber incidents, technologies for ensuring protection in cyberspace, including the issue of log sources and platforms for detecting information about threats and the principles of cyber incident investigation. This is followed by an introduction to the legal regulation of cyber security, including a description of ENISA recommendations. The practical part of the bachelor thesis is further divided into four chapters. In the first part, an analysis of available web frameworks that can be used in application development and an analysis of the rule visualization methods used in two modern SIEM solutions were performed. The second phase focuses on the design of different views that can be used to provide a pleasant, intuitive and interactive environment for displaying user rules. The visualization designs include the components available in the D3.js library and working with the MITRE ATT&CK matrix. The second phase also includes the creation of a structure for the layout of the elements in the web application. The third phase is oriented towards approaching the actual implementation of the appropriate views that result from the analysis performed in the second phase. It also includes a description of the experimental environment in which the application was developed and how the data was obtained. The last phase focuses on testing the visual part of the application from the user’s perspective. The whole thesis finishes with a conclusion, which summarizes the results of the bachelor’s thesis, which have been achieved, and suggestions for improving the application in the future.
Framework for interactive web textbooks of music theory
Neděla, Jakub ; Říha, Kamil (referee) ; Lieskovan, Tomáš (advisor)
Musical notation plays a crucial role in accessing and interpreting musical content while also serving as a means of communication between musicians and performers. This work explores existing frameworks for displaying musical scores and playing sounds on web pages. The aim of the project is to design and implement a solution enabling the display and playback of musical scores. To achieve this goal, various library options are examined. For the implementation of the program for web pages, the VexFlow and Tone.js frameworks have been selected. The result of the work is a proprietary software tool that allows the display and playback of musical scores on web pages with the aim of promoting a better understanding of musical notation.
Generative Neural Network for Creating Synthetic Photorealistic Images
Hora, Adam ; Přinosil, Jiří (referee) ; Říha, Kamil (advisor)
The main objective of this work is to select and design a neural network model that will be able to generate realistic images thematically fitting the selected dataset. The architecture used for the solution is Deep convolutional generative adversarial network. This network is than implemented in the Python programming language using the Tensorflow application programming interface and its included interface Keras. Finally, the model is trained on the selected dataset and the resulting generated images are presented. The final model and individual images are then evaluated using various quality assessment methods.
Audio visualizer
Jelínková, Jana ; Schimmel, Jiří (referee) ; Říha, Kamil (advisor)
The aim of this thesis is to create an audio visualizer. That means an object, whose parameters will be changed in real time based on chosen parameters of an audio. The first part of this thesis deals with different kinds of audio visualizers through history till today and also deals with some artistic theories about visualization. The second part deals with the main solution of the visualizer in Pure Data and principles used for audio processing and also describes development of an external for Pure Data.
Digital Image Watermarking
Šujan, Miroslav ; Říha, Kamil (referee) ; Číka, Petr (advisor)
The bachelor´s thesis deals with the problem of static digital watermarking in frequency domain. It is a process of adding secret information to the original data without any negative influence to them, while in the same time making sure that the identification and hidden watermark cannot be removed easily. The main aim of this thesis is to sum up the current techniques of watermarking, to carry out of two watermarking techniques and a test of resistance to attacks against them.
Face recognition in digital images
Hauser, Václav ; Přinosil, Jiří (referee) ; Říha, Kamil (advisor)
This master thesis deals with the detection and recognition of faces in the image. The content of this thesis is a description of methods that are used for the face detection and recognition. Method described in detail is the principal component analysis (PCA). This method is subsequently used in the implementation of face recognition in video sequence. In conjunction with the implementation work describes the OpenCV library package, which was used for implementation, specifically the C ++ API. Finally described application tests were done on two different video sequences.
Colour image histogram processing
Kučera, Ondřej ; Číka, Petr (referee) ; Říha, Kamil (advisor)
This bachelor thesis deals with processing of colour image histogram. To better undestanding of this problem it describes individual methods which edit colour image and its histogram. The thesis suggests a program implementation which allows processing of colour image and its histogram.
Hough's transform for circle detection
Kazík, Martin ; Burget, Radim (referee) ; Říha, Kamil (advisor)
The thesis is focused on the implementation of Hough transform algorithm for circle recognition. Algorithm is implemented in C++ language using open source library OpenCv. As a development environment was chosen Microsoft Visual Studio 2008. At first there is general description of classical Hough transform for line and circle recognition. Then thesis contains description of particular steps of Hough transform algorithm and description of OpenCv functions witch are used in these steps. There is a detail description of functions for converting image to grayscale, smoothing image by Gaussian filter and Canny edge detector for edge detecting in smoothed image. Efficiency and speed of algorithm is increased by using function for finding possible centers. This function using the fact that line perpendicular to the chord of circle and going thought its middle point at the same time have to cross the center of the circle. Results of particular stages of algorithm (converting to grayscale, smoothing by Gaussian filter, edge detection, creating of possible centers accumulator and drawing circles) are presented on ultrasonic image of collagen arterial substitute. In the second part of the thesis the algorithm is used for detection of artery in frames of video captured by ultrasound. There is a description of automatic method for evaluating of success of artery detection. Success of detection is analyzed by changing values of important algorithm parameters. From series of tests there are defined ideal parameters of algorithm for artery detection in the video.

National Repository of Grey Literature : 200 records found   1 - 10nextend  jump to record:
See also: similar author names
6 ŘÍHA, Karel
6 Říha, Karel
Interested in being notified about new results for this query?
Subscribe to the RSS feed.