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Online System for Visual Geo-Localization in Natural Environment
Pospíšil, Miroslav ; Čadík, Martin (referee) ; Brejcha, Jan (advisor)
The goal of this master thesis is creation of an online system serving as a performing application for presentation results of visual geo-localization in nature and mountain environment. The system offers the users to choose one of the pre-defined photographs or~to~upload one's own photography while choosing a file or inserting an URL address. The~system will localizate a camera of a given image based on a visual geo-localization. The~geo-localization uses the mountain horizon as a key characteristic when searching for similar horizons. The~curve line of the horizon is extracted by a fully automatic algorithm based on supervised learning and dynamic programming. Visual geo-localization running on the server which using new inversed index with cache politic. This allows further scaling of the system. The server processing detected horizon curve and respond with set of the best candidates on results. Results are visualised to the user in form of classic map, detailed sattelite view and rendering of found panorama.
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A Set of Web Tools for Visualization Geo-Location System Performance
Hodoval, Pavel ; Pavelková, Alena (referee) ; Brejcha, Jan (advisor)
Aim of this thesis is to create a set of web tools and web user interface to present the results of geo-location system. Thesis contains introduction to theory of data visualization in cartography and basic image processing algorithms. Also there is a research of existingsolutions and tools as well as available web technologies. As a result, a library for geographic data processing and visualization was implemented and its results are shown as web map presenting geographical and statistical data. Quality of the implementation was verified and tested by user test and automated machine test with mostly positive results.
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Image Completion Using Depth Maps
Valeš, Ondřej ; Brejcha, Jan (referee) ; Čadík, Martin (advisor)
The aim of this thesis is to design and implement aplication for dataset driven scene completion utilizing data from similar dataset images and test the posibility of generating data used in reconstruction directly from depth map. For scene matching in dataset novel modification of GIST descriptor including depth data is used. Furthermore, depth maps can be used to split reconstructed image into parts with similar depth, simplifying reconstruction process. Part of this thesis is also computing GIST descriptors for datset images and implementation of tools for searching datset for similar images using depth maps.
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Mobile Robot Localization in Indoor Scenarios
Sýkora, Tomáš ; Brejcha, Jan (referee) ; Beran, Vítězslav (advisor)
The goal of this project was to create a software for an autonomous mobile robot capable of navigation in indoor scenarios and of detection and recognition of the objects on its way. An important condition that the final software had to meet was to find the cheapest solution possible. I achieved the given goal and its conditions using an open source software framework Robotic Operating System (ROS) and its tools. The final system is a set of ROS modules communicating with each other, using a single sensor as an input data stream and a small motor which is able to send information about its velocity and rotations to the control part of the system. This mobile robot can, without any significant problems, navigate through a mapped area while trying to find trained objects. Such a robot could be easily used (after adding specific mechanical parts) to help retired or disabled people, to cooperate with industry workers or in many other fields.
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Object Instance Search in Image Dataset
Medvec, Juraj ; Brejcha, Jan (referee) ; Beran, Vítězslav (advisor)
This project is focused on the selected techniques for image searching. In the introduction are presented all existing solutions, which are used in daily use. The other chapters are focused on creating resulting framework. On the end is introduced the demo application, which is using the framework for searching books by front page image.
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Library for OSM Rendering on Smartphones
Vaďura, David ; Brejcha, Jan (referee) ; Herout, Adam (advisor)
The aim of my work was to design and implement a vector map rendering library for mobile phones. The source of the data for the library is the project OpenStreetMap. The library must include these functions: loading and caching of tiles, support for online and offline maps, rendering of all geometry types and possibility to define custom map style. The proposed architecture uses a hybrid approach to presenting the map. Base features are rendered into texture upon loading them. Layers containing text or icons are rendered in real-time above the base map. This enables them to rotate and it ensures that the text stays readable even when zoomed in. The resulting library was implemented in C++ using OpenGL ES for hardware accelerated rendering. It works on both iOS and Android, and it is designed in such a way, that it can be easily used by individuals and companies.
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Image Enhancement Using Depth Maps
Krbec, Jakub ; Brejcha, Jan (referee) ; Čadík, Martin (advisor)
The thesis is dealing with methods for enhance photography captured in nature usingsynthetic depth map. Depth map is obtained from digital terrain model with precision inthe order of meters. Using depth map we can eliminate undesirable effects of weather suchas fog or we can simulate depth of field based on parameters of cameras and lenses oreventually we can simulate unreachable parameters of lenses. The method for eliminatingnegative influence of atmosphere (dehaze) is implemented by combination of available depthmap and depth map estimated directly from input photo. This combination is mainly usedif available depth map is not accurate enough. The method for simulating different depth offield is implemented by convolution of circle kernel which better approximates the shape ofthe camera aperture than Gaussian kernel. Experimental results show that using syntheticdepth map we can successfully simulate small depth of field in outdoor photos and eliminateundesirable influences of atmosphere.
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Semantic Segmentation in Mountainous Environment
Pelikán, Jakub ; Čadík, Martin (referee) ; Brejcha, Jan (advisor)
Semantic segmentation is one of classic computer vision problems and strong tool for machine processing and understanding of the scene. In this thesis we use semantic segmentation in mountainous environment. The main motivation of this work is to use semantic segmentation for automatic location of geographic position, where the picture was taken. In this thesis we evaluated actual methods of semantic segmentation and we chose three of them that are appropriate for adapting to mountainous environment. We split the dataset with mountainous environment into validation, train and test sets to use for training of chosen semantic segmentation methods. We trained models from chosen methods on mountainous data. We let segments from the best trained models get evaluated in electronic survey by respondents and we evaluated these segments in process of camera orientation estimation. We showed that chosen methods of semantic segmentation are possible to use in mountainous environment. Our models are trained on 11, 5 or 4 mountainous classes and the best of them achieve on 4 class mean IU 57.4%. Models are usable in practise. We show it by their deployment as a part of camera orientation estimation process.
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Registration of Photos to 3D Model
Deák, Jaromír ; Brejcha, Jan (referee) ; Čadík, Martin (advisor)
This work refers existing solutions and options for the task registration of photos to 3D model based on the previous knowledge of the geographic position of the camera. The contribution of the work are new ways and possibilities of the solution with the usage of graph algorithms. In this area, the work interests are useful points of interest detection in input data, a construction of graphs and graph matching possibilities.
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ONE OR TWO SCENIC DESIGNERS
Brejcha, Jan ; SMOLÍK, Robert (advisor) ; TÄUBELOVÁ, Kristýna (referee)
This master´s thesis tries to compare and evaluate experiences of the author from his master´s studies. On six selected plays it compares three types of theatre performances – theatre of a big scene (plays Plné ruce revoluce and Cejch), theatre of a puppet scene (plays Slzy ošlehaných mužů and Frankenstein) and author´s production (plays Proroctví severoamerických indiánů and Cern). It investigates its specifics, advantages and disadvantages.
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