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Web App for Capturing and Sharing New Shots of Historical Photographs
Mencner, Pavel ; Maršík, Lukáš (referee) ; Čadík, Martin (advisor)
This bachelor's thesis deals with design and implementation of the web application used for capturing and sharing new shots of the historical photographs also known as rephotographs. Product application is realised in JavaScript programming language. Server side is build on the Node.js platform and use Express.js framework and NoSQL database MongoDB. Client side is realised as single page application build on Angular 2 framework and communicates with server side via REST interface.
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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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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 Geo-Location System
Bečka, Petr ; Brejcha, Jan (referee) ; Čadík, Martin (advisor)
The main goal of the thesis is to develop a set of web tools to visualize results and exploit functionality of geo-location system LOCATE. Obtained informations could be showen in web map and digital terrain model. For interaction with user is prepared interface to upload photos. Furthermore was developed a method, witch allows to customize appearance and functionality of visualization means.
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Color-to-Grayscale Video Conversions
Března, Filip Samuel ; Hradiš, Michal (referee) ; Čadík, Martin (advisor)
Color to grayscale conversion is still a relevant topic and finds use in multiple areas, to which belongs artistic photography, but primarily colorless print and for simplifying some processes in picture processing. This Bachelor thesis deals with this conversion - decolorization, with focus on video sequences. The basic principle of representation of digital image is explained here alongside with operations for its processing used in next part of thesis. Thereafter it includes the analysis of types of methods, which are used for the conversion to grayscale and further their properties and success rate are evaluated aswell. In the second part of this thesis, there are three chosen and implemented decolorization methods and summary of their achieved results, which is then accompanied by evaluation of practicability in conversion of colorful video sequences to grayscale ones.
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Web Application for Panorama Search
Pospíšil, Miroslav ; Čadík, Martin (referee) ; Brejcha, Jan (advisor)
The aim of my bachelor thesis is to create a web front-end, which provides mountain localisation of images. Images can be uploaded directly to the application or you can use images from the Flickr web service. Flickr is integrated in the application by Flickr API. Localisation of selected image is based on mountain horizon. User-aided semi-automatic horizon detection is approached by special user interface utilising the GrabCut algorithm for segmentation. Localisation is provided by server back-end which is connected and integrated with the designed application. Results for the detected horizon are visualised in a form of aligned horizon curves with position displayed using the Google Maps API. The final fully functional application was tested by moderated usability test with users. Application in this test performed well. Despite several shortcomings detected by the test the application was easy to use.
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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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Realistic Visualization of Snow
Chukir, Patrik ; Polášek, Tomáš (referee) ; Čadík, Martin (advisor)
This diploma thesis follows visualization of snow formations, which are called penitentes. This work includes also collecting the data needed to derive the optical properties of the penitentes material. Which are different phases between snow and ice. For visualization method is used Progressive Transient Photon Beams, that this work implements with the help of SmallUbpb.
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Panoramic Photo Creation
Cacek, Pavel ; Čadík, Martin (referee) ; Behúň, Kamil (advisor)
This thesis deals with issues automatic composing panoramic photos from individual photos. Gradually examines the various steps of algorithms and methods used in them, which are used in creating panoramas. It also focuses on the design of the own system based on methods discussed to construct panoramas. This system is implemented using OpenCV library and it is created also a graphical interface using a Qt library. Finally, are in this thesis evaluated outcomes of this designed and implemented system on available datasets.
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Ray Tracing for Electron Microscope
Suchánek, Jan ; Lysek, Tomáš (referee) ; Čadík, Martin (advisor)
This thesis is pointed on simulation of electron microscope. It uses knowledge from ray-tracing methods and physically based rendering with physics of electron microscopy. The main object of this thesis is to create realistic simulator for electron microscope which can generate satisfying realistic images. This output can be used for another research in range of machine learning or microscope application development. This method should replace long and more expensive way of getting test images from real system for those research activities.
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