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Online Presentation Creator
Zavacký, Filip ; Nečas, Ondřej (referee) ; Kajan, Rudolf (advisor)
I have solved a new way of creating presentations, the zooming user interface and running presentations like video. I have created an interface as two-dimensional surface. Presentation is created the way that objects are placed on the surface and connected with path. I have succeeded in creating an application with described properties and solving given problem. I have documented approaches that I have used in solution.
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Face Detection in Video on GPU
Tesař, Martin ; Nečas, Ondřej (referee) ; Polok, Lukáš (advisor)
This work deals with task of face detection on graphic card. First part is the introduction to face detection methods focusing on detector proposed by Viola and Jones. Further, this work studies the possibilities of mapping detector's key parts on graphic card. Next part describes implementation details of designed application. The end of work include results and comparison with CPU approach. The last chapter summarizes the whole work and proposes future possibilities of development.
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Radiosity on GPU
Šabata, David ; Nečas, Ondřej (referee) ; Polok, Lukáš (advisor)
This work deals with the radiosity algorith, a global illumination method and its implementation in OpenGL and OpenCL libraries. At rst two of the most common global illumination methods will be presented, considering radiosity as the main topic, including its usage in realtime rendering. An introduction to the libraries used will be next, followed by description of the application implemented in C++ language. In the end the ndings of this thesis and its possible improvements will be discussed.
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Advanced Image Edge Detection
Novák, Marek ; Nečas, Ondřej (referee) ; Španěl, Michal (advisor)
Edge detection is one of the fundamental techniques used in the fields of image processing and computer vision. Goal of this thesis is an implementation and evaluation of chosen basic and advanced edge detection methods, including performance evaluation. Thesis describes implementation and performance evaluation of Linked Edges as Stable Region Boundaries method. Performance is evaluated using Berkeley Segmentation Data Set and Benchmarks 500 .
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Counting People on the FIT Foot Bridge
Maliňák, Václav ; Nečas, Ondřej (referee) ; Herout, Adam (advisor)
This thesis is devoted to determining the number of moving object in video sequences. It explains principles and basic methods of moving object detection in video sequences. Methods such as LBP, optical flow and intensity histograms are mentioned, background subtraction method is examined more deeply. Afterwards, the principles of object tracking is explained, as well as possible methods of object counting. An important part of this thesis constitutes implementation of an application that was tested on videos capturing people at move over the FIT foot bridge. At the end of this thesis, application measure of success is evaluated.
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The House nearby little chapel
Nečas, Ondřej ; ing.arch. Lukáš Ležatka, Ph.D (referee) ; Pavlovský, Tomáš (advisor) ; Daněk, Lukáš (advisor)
The aim of this thesis was a proposal of new multifunctional house in the cadastral area Brno-Židenice. On this topic was made proposal in the AG32 subject. The building is located on the corner parcell of Nezamyslova and Táborská. The main objective in the design was to create a high-quality and full-fledged housing despite the hectic place where the building is located. The shape of the building is based on the street lines of streets mentioned above. Another factor taken into consideration is the chapel right on the junction of streets. The proposed house is trying complement chaple by its simple cubic form. Space between the house and the chapel should become more busy meeting place for locals. This action are supported by café located in front face of the building, which can expand outdoors during the summer time. An important element is the passage to a quieter area in the yard, where there is semi-public zone shielded from the bustle of the street used for rest. This duality is emphasized by the use of expanded metal facades only from the street side, which serves as a shading element. Conversely, in the yard of the house shows its milder form using white facade. Diverse height of the building respond to the increasing assumption of buildings and busy the street. Street Táborská is intended tram and car traffic, connects Židenice with Julianov and the surrounding area gradually undergoing renovations at which raises the height of surrounding buildings. On this side object has 4 storeys. Street Nezamyslova is only served by tram lines, the surrounding area are the family houses, which gradually decrease from the building. In this street object has only 3 floors. Proposed building becomes corner building that closes the block with the connection to the surroundings. Apartments in the building are designed to cover the widest possible the requirements for housing.
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MRI Data Processing Acceleration on GPU
Kešner, Filip ; Nečas, Ondřej (referee) ; Polok, Lukáš (advisor)
This BSc Thesis was performed during a study stay at the Universita della Svizzera italiana, Swiss. The identification of trajectories of neuron fibres within the human brain is of great importance in many medical applications as the neural diagnostics, neuronavigation, treatment of epilepsy, surgical removal of tumors and etc. By using diffusion MRI-data as input, and by employing Monte-Carlo like methods, possible trajectories are generated and the most likely ones can be visualized. These can serve as input for advanced medical diagnosis and treatments. Due to the huge amount of data to be analyzed and many iterations, this is a time consuming process. For the purposes such as statistical analysis and comparsion over several datasets or several patients, computational time requirements are enourmous. Faster diagnosis can improve routine throughput and provide earlier treatment of illness. At this time, there exists only a very few implementations of neural tractography sof tware. For probabilistic neural tractography is the list of software even thiner. Today's implementations using standard serial CPU execution suffer from high time consumption. The goal is to provide an efficient implementation which makes use of GPGPUs and exploits parallelism in the method. For the GPU implementation, a comparsion of CUDA and OpenCL technologies will be provided, using the more suitable one.
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Wireless network security implementation variants
Nečas, Ondřej ; Růčka, Lukáš (referee) ; Stančík, Peter (advisor)
The aim of the thesis is to introduce the reader into the issue of the data transfer via wireless network which is a rapidly evolving and widely applied field.The work mainly deals with the important issue of how to secure a wireless connection correctly and effectively. In the beginning, the work provides the introduction into the basic terms of the field. Then, the basic types of a wireless network security are introduced together with the related standards of the wireless transmission security. Furthermore, the fundamentals of the information cryptography are explained as well as the basic principles of the most frequently used means of the Wi-Fi network security. The practical part comprises the demonstration of individual penetration attacks on the most frequent types of security features and standards used in the wireless networks.
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Photon Mapping
Nečas, Ondřej ; Španěl, Michal (referee) ; Herout, Adam (advisor)
This thesis deals with practical implementation of photon mapping algorithm. To achieve better results some basic and some more advanced methods of global illumination has been examined. These time demanding algorithms are often practically unusable and their further optimization is necessary. Optimized ray tracer is essential for practical implementation. Computing diffuse interreflection by Monte Carlo sampling is also very time demanding operation. Therefore it is appropriate to use it along with proper interpolation.
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