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Hand gesticulation recognition in image
Mráz, Stanislav ; Petyovský, Petr (referee) ; Horák, Karel (advisor)
This master’s thesis is dealing with recognition of an easy static gestures in order to computer controlling. First part of this work is attended to the theoretical review of methods used to hand segmentation from the image. Next methods for hang gesture classification are described. The second part of this work is devoted to choice of suitable method for hand segmentation based on skin color and movement. Methods for hand gesture classification are described in next part. Last part of this work is devoted to description of proposed system.
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Reconstruction of Fragmented Objects
Bačíková, Petra ; Beran, Vítězslav (referee) ; Španěl, Michal (advisor)
Thesis deals with reconstruction of fragmented objects. It contains a sentenious view of already realized projects with reconstruction subject. In the folowing section, the thesis describes essential methods of image processing, work with contours and corelation. There are proposed algorithms of image processing, corners detection and edges matching.
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Short-Term Forecast Based on Image of Sky
Volf, Martin ; Španěl, Michal (referee) ; Hradiš, Michal (advisor)
The bachelor's thesis submitted is dedicated to weather forecast based only on a video stream. At first, basic weather information which the sky can provide are presented. Cloud types including their properties and methods which the sky can most efficiently describe are dealt with. At second, basic circumstances between weather information are discussed. The objective of this work is to prove accuracy of the methods used for gaining data from the video stream and to find out whether it could be possible to use them for forecasting the rain, air humidity and sunshine for the period of time one hour later.
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Hand Gesture - Controlled VJ Mixer
Vlk, Jakub ; Žák, Pavel (referee) ; Polok, Lukáš (advisor)
This paper describes an implementation of a VJ Mixer controlled by hand gestures. For construction of VJ mixer is first necessary to detect hands in the picture. Therefore this paper first describes the methods of detection of human skin in an image, with an emphasis on the method of Gaussian probability distribution, which is used in the actual implementation of a program. Then some methods of detecting objects in images are described , mainly for hands and gestures. Great emphasis is placed on the method of convex defects, which was used in the final program. Finally, the procedures linking the hand gesture recognition with the video processing algorithms are described.
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The effect of 3D models usage in teaching on students' misconceptions about contours
Mokruša, Oldřich ; Hanus, Martin (advisor) ; Cimová, Tereza (referee)
The diploma thesis deals with the impact of using 3D models in education on students' misconceptions about contours. The main objective of the thesis is to determine whether 3D relief models are a suitable tool for eliminating students' misconceptions when interpreting elevation on topographic maps. To introduce the reader to the context, the terms related to topographic maps, pedagogical constructivism, and the use of 3D models in education are first explained. To achieve the main objective and collect data, closed conceptual tests and educational interventions with the help of three-dimensional models are used. Crucial data is obtained by comparing the results students achieved before the intervention, in the pre-test, and after completing it, in the post-test. This research builds on a series of previous studies that were focused on the issue of misconceptions in interpreting contour lines. One of the outcomes of this thesis is the specifics and process of creating 3D terrain models and worksheets, which serve as teaching tool. The results showed that students' performance and confidence in their answers improved. To draw conclusions, the results are compared with specialized literature concerning the use of 3D models in education. Key words: Contours, misconception, conceptual test, 3D model,...
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Geomorphological contour interpolation over triangulated irregular network
Morávek, Andrej ; Bayer, Tomáš (advisor) ; Čepek, Aleš (referee)
The aim of this master thesis is to create an application to generate smooth contours with the method of non-linear, so-called geomorphological interpolation over triangulated irregular network using patch technique. The introductory part consists of the state of art in the field of patch modelling and description of georelief in the form of digital terrain models. The core of the work comprises the mathematical background of Bézier triangle patches using barycentric coordinates and interpolation techniques with definition of continuity. The main contribution is a proper algorithm of balanced patch smoothing in order to generate smooth contours as form of georelief representation. Description of linear contour interpolation over triangulated irregular network as a method of indirect geomorphological interpolation is also part of the core. Finally, the last part describes the implementation of algorithms that forms the application, presents and evaluates the results on synthetic and real data.
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Simplification of contour lines in flat areas
Čelonk, Marek ; Bayer, Tomáš (advisor) ; Kolingerová, Ivana (referee)
Simplification of contour lines in flat areas The diploma thesis is focused on the cartographic generalization of contour lines derived from dense point clouds in flat territories, where the original contour lines tend to oscillate. The main aim is to propose, develop and test a new algorithm for the contour simplification preserving the given vertical error and reflecting the cartographic rules. Three methods designed for large scale maps (1 : 10 000 and larger) are presented: the weighted average, modified Douglas-Peucker and potential-based approach. The most promising method is based on the repeated simplification of contour line segments by calculating the generalization potential of its vertices. The algorithm is implemented in Python 2.7 with the use of Arcpy library was tested on DMR5G data, the simplified contour lines were compared with the result created by a professional cartographer. Achieved results are presented on attached topographic maps. Keywords: contours, cartographic generalization, digital cartography, vertical buffer, smoothing, GIS
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Contour methods in the mathematical theory of phase transitions
Nagy, Oliver ; Zahradník, Miloš (advisor) ; Netočný, Karel (referee)
Title: Contour methods in the mathematical theory of phase transitions Author: Oliver Nagy Department: Department of Mathematical Analysis Supervisor: doc. RNDr. Miloš Zahradník, CSc., Department of Mathematical Analysis Abstract: This thesis concerns itself with three topics, namely polymer models, Pirogov-Sinai theory and one-dimensional Dyson models. It contains a short introduction into all three topics. The introduction to Pirogov-Sinai theory will serve as a starting point for a future expanded introductory exposition, since such a material is missing in the contemporary literature. Research result of the first chapter is a detailed combinatorial analysis of cluster expansion of hard-core repulsive polymer model based on 'self-avoiding polymer trees', leading to simplification of the structure of summation in the partition function. In the case of Dyson models we suggest an alternative definition of contours for the one-dimensional Dyson model with the exponent of polynomially-decaying interaction p ∈ (1, 2) that is usable for study using Pirogov-Sinai methods. Keywords: Contours, polymers, cluster expansion, Pirogov-Sinai theory, Dyson model;
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Geomorphological contour interpolation over triangulated irregular network
Morávek, Andrej ; Bayer, Tomáš (advisor) ; Čepek, Aleš (referee)
The aim of this master thesis is to create an application to generate smooth contours with the method of non-linear, so-called geomorphological interpolation over triangulated irregular network using patch technique. The introductory part consists of the state of art in the field of patch modelling and description of georelief in the form of digital terrain models. The core of the work comprises the mathematical background of Bézier triangle patches using barycentric coordinates and interpolation techniques with definition of continuity. The main contribution is a proper algorithm of balanced patch smoothing in order to generate smooth contours as form of georelief representation. Description of linear contour interpolation over triangulated irregular network as a method of indirect geomorphological interpolation is also part of the core. Finally, the last part describes the implementation of algorithms that forms the application, presents and evaluates the results on synthetic and real data.
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Hand Gesture - Controlled VJ Mixer
Vlk, Jakub ; Žák, Pavel (referee) ; Polok, Lukáš (advisor)
This paper describes an implementation of a VJ Mixer controlled by hand gestures. For construction of VJ mixer is first necessary to detect hands in the picture. Therefore this paper first describes the methods of detection of human skin in an image, with an emphasis on the method of Gaussian probability distribution, which is used in the actual implementation of a program. Then some methods of detecting objects in images are described , mainly for hands and gestures. Great emphasis is placed on the method of convex defects, which was used in the final program. Finally, the procedures linking the hand gesture recognition with the video processing algorithms are described.
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