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Routing algorithms in crisis management
Měchurová, Kristýna ; Brůha, Lukáš (advisor) ; Štych, Přemysl (referee)
Routing algorithms in crisis management Abstract The work describes network analysis usage in the crisis management, concretely, holding an emergency for operation company's critical places. Those critical places are stationed across the whole republic, as well as emergency points that they operate. The work also describes how to minimalize a set of pre-entered emergency points in a way that will also keep all the critical points covered. The next part of the work is an implementation of a tool above chosen GIS, which serves to recognize, which emergency point (of already optimalized set of emergency points) is to be sent to where critical point is while minimizing the disruption of other critical points in the network. The tool also contains graphical output. Keywords: Graphical analysis, location - allocation, GIS
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Spatial analysis of medical data
Stramová, Andrea ; Brůha, Lukáš (advisor) ; Martínek, Karel (referee)
Nowadays, all the aspects that can influence the function of the thyroid gland are not known. Since the influence of environment on progression of many diseases is proved, this thesis deals with the influence of environmental parameters on the thyroid function. The purpose of this thesis is to propose a methodology which will describe selected medical data spatially and statistically, reveal regularities in its spatial organization and create the regression model. The special organization of the data is described by the closest neighbour's methodology and by the Local Moran`s I. Then the methodology of O2PLS, which proposes the regression model, is used. There were identified the cluster organization in the vicinity of towns. In the thesis, the regression model, which takes account of the aspects of the environment (the concentration of As, Cd, Pl, Pb and Se in water), was proposed. The influence of the other environmental parameters on the thyroid function was not proved. The thesis is a benefit mainly for the field of spatial data analysis and also for the endocrinological specialization. Owing to this thesis, the process of the way of working with sensitive medical data, that can be used for inferring important information about its connection to the spatial data, was created. Key words: Spatial...
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Feature-based multi-resolution topography
Brůha, Lukáš ; Bayer, Tomáš (advisor) ; Bodum, Lars (referee) ; Bandrova, Temenoujka (referee)
A three-dimensional (3D) representation of the topographic surface is an important element in planning, civil engineering and mapping. Many state-of-the-art representa- tions provided graphical, 3D model of entire planet. However, the existing solutions to 3D topographic surface lack the geometric flexibility and accuracy on boundaries with models of other geographic features. Most of the contemporary approaches to digital Earth solutions focus on the visualization performance. The high visual performance is achieved by the use of special data structures optimized for rendering. However, this optimization towards visualization hampers the data management of spatial data, their analysis and distribution. Therefore, the introduced solution reflects on multiple requirements of digital Earth systems. In addition to the visualization performance, the requirements regarding data interoperability, data management and distribution, data analysis and the multiple level of detail (LOD) are considered as essential for the design of the new solution. The topographic surface is central to the proposed method. It provides the defining surface in terms of which other features can be geographically referenced to. Therefore, this work introduces a new, more functional data representation of multi-resolution...
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A development of the GIS tool for evaluation of population mobility based on mobile phone operators data
Lagner, Ondřej ; Štych, Přemysl (advisor) ; Brůha, Lukáš (referee)
The main aim of the diploma thesis is the facilitation of the monitoring in short-term and long-term migration of population by using processed data of the mobile operator. The diploma thesis is focused on creating an algorithm that allows spatial correlation of positional data from the mobile operator with specific statistical data. In the first part, the reader is introduced to the theoretical background and to the current state of knowledge of the study issues. The methodological part presents the process of designing the tool. The initial phase of the algorithm corrects inadequate topology and the incorrect geometry of input data. The secondary part of the thesis is concerned about the necessary intersection of statistical territorial units and the mobile radio cell stations. During the design of the tool we focused on the user friendliness. The resulting data layers enable the addition of another statistical data or the development of geodatabases.
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The process of city block modeling using a procedural programming language
Koucká, Lucie ; Štych, Přemysl (advisor) ; Brůha, Lukáš (referee)
The master thesis deals with a block subdivision into parcels using procedural modeling. The main goal focuses on improving of the existing method called OBB-based Subdivision that uses auxiliary envelopes of rectangle shape for splitting. It is required to adapt the method to Czech conditions as well. The first part focuses on the analysis of scientific publications, which describes the development and current situation of procedural modeling issues. Then the methodology of suggested algorithm is described that tests a change of the envelope to the trapezium shape, respectively to the quadrangle shape. In conclusion, the proposed algorithms are tested on the real data in CityEngine, which offered the possibility of using procedural approach to automatically generate 3D parcels. The whole process is controlled by the limitations of development plans of the selected urban areas. Powered by TCPDF (www.tcpdf.org)
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Modeling population with topographic data
Šimbera, Jan ; Brůha, Lukáš (advisor) ; Hudeček, Tomáš (referee)
Accurate spatial population data are an important requirement in many applications. In this thesis, the problem of disaggregating the spatial distribution of population density and rent costs using a machine learning model is studied. An approach based on freely available ancillary data such as OpenStreetMap and Urban Atlas is proposed and implemented in the form of an automated Python toolbox for ArcGIS. The applications on the urban areas of Prague, Vienna and Ljubljana show promising results, overperforming the competing population disaggregation solutions in spatial resolution and displaying a satisfying degree of transferability. A number of further improvements is suggested. Powered by TCPDF (www.tcpdf.org)
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Analysis of satellite data applicability for rock glacier creep monitoring
Palúchová, Miroslava ; Brůha, Lukáš (advisor) ; Potůčková, Markéta (referee)
Analysis of satellite data applicability for rock glacier creep monitoring Abstract Rock glaciers are characteristic forms of periglacial high mountain environments. The creeping of active rock glaciers and changes in its velocity are important indicators of climate change. If unstable, rock glaciers can impose hazards to anthropogenic objects and/or populated areas. The presented thesis deals with the question of rock glacier creep monitoring with the use of satellite data. Two main methods for detecting and measuring the movement of landforms on optical and radar imagery are introduced. These methods are image matching and differential SAR interferometry. The goal of the thesis is to evaluate the applicability of the given methods for the research of the movement of rock glaciers. The thesis provides an overview of existing satellite data as well as an analysis of their suitability for research depending on rock glacier velocity. Keywords: remote sensing, movement monitoring, rock glaciers, image matching, DInSAR
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Create a 3D model of the grammar school of Jan Palach in Melnik
Krejza, Vojtěch ; Čábelka, Miroslav (advisor) ; Brůha, Lukáš (referee)
Create a 3D model of the Grammar School of Jan Palach in Melnik Abstract The aim of this bachelor thesis is to conduct a detailed analysis of the software Blender and evaluace its possibilities for making a 3D model of the building in comparison with the software Google SketchUp. Next, create the original 3D model of the Grammar School of Jan Palach in Melnik from available data, which represent mainly building plans. In this thesis are descripted principles, problems and options of creation of 3D models and their details with the aim of the focus to open source softwares. Furthermore, it focuses on the actual software analysis and subsequent use of the studied functions in the creation of the 3D model. Keywords: 3D, 3D visualization, 3D software, modeling buildings, Blender, Google SketchUp, Open source software
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Modeling of solar irradiance for lunar base locations
Čašek, Jakub ; Brůha, Lukáš (advisor) ; Kolář, Jan (referee)
Modeling of solar irradiance for lunar base locations Abstract An incident radiation is an essential factor for a discovery of a place suitable for building a lunar base. This thesis presents a new approach for modeling of solar irradiance in an arbitrary lunar location at selected time. Shadowing by surrounding terrain is calculated by spatial intersection between lines of illumination and digital terrain model. Model also takes variable distance between Moon and Sun and areal representation of the Sun into account. In this thesis a new geometrical procedure for calculation of reflected irradiance is designed. The resulting model is implemented within ArcGIS software as an executable script, which utilizes the freely available data from Lunar Reconnaissance Orbiter as an input. Key words: Moon, solar irradiance, geoinformatic modelling, scripting
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Image-based reconstruction of 3D point cloud
Pernerová, Monika ; Brůha, Lukáš (advisor) ; Štefanová, Eva (referee)
The objective of this work is reconstruction of 3D point clouds of a wall rock terrain around Pravčická brána using digital image correlation techniques. The text describes problematics of digital images, principles of image matching and algorithms which are the main component of 3D point clouds modelling. In practical part of this thesis 3D point clouds are generated from self-taken photos using PhotoModeler Scanner, followed by reconstruction of model surface in CloudCompare and MeshLab and integration of the 3D model to 2.5D TIN model of surroundings of Pravčická brána in ArcGis. This work is carried out in cooperation with Správa Národního Parku České Švýcarsko.
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