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Application of GIS in the evaluation of renaturation of watercourses
Havránková, Ivana ; Štych, Přemysl (advisor) ; Holman, Lukáš (referee)
Application of GIS in the evaluation of renaturation of watercourses Abstract The given work deals with the use of GIS in the issue renaturation and revitalization of watercourses. Specifically, application of GIS in the evaluation of renaturation of watercourses. First will be processed into digital maps of the Imperial fingerprint stable cadastre maps and III. Military Mapping a way that will be georeferenced to a coordinate system S-JTSK Krovak east north. Of these newly created raster documents will be together with maps II. military mapping and orthophoto CR of the 50s further vectorized flows as linear elements. It will also be vectorized land use on adjacent land map of the Imperial fingerprint stable cadastre. Compare land use data from ZABAGED serve. Surveyed an area of land adjacent stream Buffer and define the creation of DMT from which we determine the slope of terrain. The work is created in the example catchment area of Lisansky creek, where it was also conducted field research for the resolution renaturation's and revitalization's stretch of river by the agency AOPK. The results will be used by the Agency AOPK Keywords: renaturation, revitalization, GIS, historical mapping, Lisansky creek
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Land cover changes in military areas of Czechia
Outrata, David ; Štych, Přemysl (advisor) ; Červená, Lucie (referee)
1 Land cover changes in military areas of Czechia The aim of this bachelor thesis was to analyze and compare land cover changes in two areas affected by military activities, in military area Brdy and former military area Ralsko between 1986, 1998 and 2011. Maximum Likelihood supervised classification algorithm and Landsat 5 satellite images was used. Within the work was also examined the usability of Landsat images CDR, with atmospheric corrections applied. Reference data to gain control data were RGB and monochromatic aerial images. The classification system contained eight classes adapted to explored territory. Satellite photographs was classified on surveyed territories for the years 1986, 1998 and 2011, with overall classification accuracy ranged from 80.45% to 90.02%.With these data was further worked, and tables and graphs showing the area of individual land cover in the given time horizons was compiled. Outputs are also land cover maps, change maps and stable land cover maps. The expected trend that in the former military area after leaving the army land cover changed significantly, contrary to the current military area, where changes are minor, was confirmed. Key words: land cover changes, supervised classification, Landsat, Landsat CDR, military areas, Brdy, Ralsko, Geomatica, ArcGIS
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Assessment of the accuracy of Soil Sealing database in the Czech Republic
Hlaváčová, Iva ; Štych, Přemysl (advisor) ; Suchá, Renáta (referee)
Thesis is about European map of built-up areas with high resolution and the term about imperviousness (Soil Sealing Layer). The main aim of this bachelor thesis is to evaluate thematic accuracy of the Soil Sealing database in the Czech Republic with use of various statistical methods. The theoretical part deals with problems of impervious surfaces, outlines the framework of database development with principles of its creation. It is also about accuracy assessment of spacial data with specific examples. Validation is based on comparison of assessed grid with visually interpreted orthophotos. The comparison will take place within the targeted selection of three locations. Statistical methods will be applied on obtained data for particular areas and clarify accuracy of database depending on compactness of settlements. According to the results of validation, single methods and outcomes will be critically evaluated. Achieved results will be compared with similarly oriented studies. Powered by TCPDF (www.tcpdf.org)
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The Analysis Photovoltaic Utilization by Means of Tools of GIS in Model Area
Englmaierová, Tereza ; Jaroš, Jakub (advisor) ; Štych, Přemysl (referee)
The Analysis of Photovoltaic Potential by Means of GIS in Model Area Abstract The aim of the thesis is to investigate the issue of the photovoltaic utilization by means of tools of GIS. The teoretical part deals with photovoltaics, the photovoltaic effect, basic conditions and laws that need to be met in order to build a photovoltaic power station and the development and tools of GIS with special intend on Area Solar Radiation. The model is implementated in three test areas in the Czech Republic. The metodology uses tools of GIS in software environment ArcGIS Desktop, an open source application PVGIS and the ČHMÚ database. Keywords: Photovoltaic, Photovoltaic Power Station, GIS, Model, Area Solar Radiation
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Comparison of RÚIAN / ISKN and ZABAGED data with focus on land use / land cover
Štysová, Lucie ; Lysák, Jakub (advisor) ; Štych, Přemysl (referee)
The goal of this diploma thesis is to propose a proper method of comparison and quantification of differences in RÚIAN / ISKN and ZABAGED databases with respect to their specifics, while focusing on descriptive part of the data reflecting land use / land cover. This proposal is implemented using automated means of geographic information systems and the methodology is tested on sufficient number of appropriate areas. The theoretical part introduces with a possibility to compare datasets in general and with the characteristics of the both databases, with focus on their attribute part describing land use / land cover. The practical part consists of the design of comparison, methodology implementation description and testing of the whole design as well as testing of those individual components that influence the result of the comparison. Result of this thesis is a methodology and software (scripts) for comparison of RÚIAN / ISKN and ZABAGED databases.
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Reconstruction of the vanished relief in selected areas in Teplicko
Týčová, Adéla ; Štych, Přemysl (advisor) ; Brůha, Lukáš (referee)
The main task of this work was the creation of digital terrain models in vanished areas because of the coal mining and comparing changes in relief. It was created two digital terrain models showing the relief situation in 1950, before the massive mining of brown coal, and in 2010, after the completion of mining. DTM were covered by orthophotos from 1953 and 2011. The entire work of DTM was conducted in GIS. It were created image thumbnails and animations of these models and it was analyzed the changes in relief. Another task was to compare the hydrological conditions in the area that have changed due to the great relief changes. For this purpose it was used hydrological tools as an extension to GIS. The results are the analysis comparing hydrological conditions between 1950 and 2010. As the model area was chosen 4th order catchment area around the vanished village Kocourkov in Teplice region. 4th order catchment area was chosen for better view on changes in hydrological conditions. In the work were used a variety of historical and contemporary sources, such as maps, orthophotos and database of geographic data. Keywords: relief changes, relief reconstruction, DTM, hydrological changes, hydrological tools, GIS
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Evaluation of the accuracy of built-up areas database in the Czech republic
Pohlová, Radka ; Štych, Přemysl (advisor) ; Chuman, Tomáš (referee)
The aim of this work is to give information about the European built-up area map with the high resolution which also contains the data concerning the soil sealing (Soil Sealing Layer). The main aim of this bachelor thesis is to evaluate thematic accuracy of the Soil Sealing database in the Czech Republic with the usage of the statistical methods and decision of its acceptance or rejection. This work also assesses its suitability and the next usage. At the beginning of the thesis there is a research relating to the issue of the built-up areas and statistical methods evaluating the database accuracy. There are explained the basic principles concerning the creation of SSL database and its validation which is made by the comparison of the validated database and the visually interpreted ortophotos. The evaluation of the database will be carried out by the unstratified random sample. Primarily, the statistical methods will be applied on the whole database and afterward they will compare the Czech areas divided according to the year of scanning of ortophotos from which the reference database was created. Besides the validation itself there will be a comparison of the quantitative methods followed by the evaluation of their advantages and disadvantages. Powered by TCPDF (www.tcpdf.org)
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Evaluating of data sources and land use changes in Prague and surroundings
Šmausová, Barbora ; Štych, Přemysl (advisor) ; Janoušek, Zbyněk (referee)
The aim of this study was to compare the data sets used in land use / land cover in terms of their content and analyze their classification systems. The work is focused on the capital city of Prague and its surroundings. The data used are described and characterized. Review was made for available data sets on a general level, especially focusing on their classification systems. For further work was chosen model area containing four cadastral (Čestlice, Křeslice, Průhonice, Újezd u Průhonic). In the model area was made analysis of data, which focused on a comparison of classification systems using spatial overlays, status and map of changes. The resulting synthesis was carried out on the basis of a general review and analysis carried out for the model area. The results of the work answer to the fundamental objectives of the work and try to describe the basic knowledge of the different and identical parameters of studied data sets. Powered by TCPDF (www.tcpdf.org)
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Relationship between morphometric characteristics of the terrain and network analysis in GIS
Kufner, Jan ; Hudeček, Tomáš (advisor) ; Štych, Přemysl (referee)
The main objective of the diploma thesis is creation of methodology and automatization of calibration process of network graph based on the values of morphometric characteristics and motion vectors. The resulting morphometric values of the terrain have been detected on the basis of mathematical and cartographic methods for line course expression. The most accurate one has been used in GIS network analysis over the road network and digital terrain models, which were chosen as the most appropriate for this purpose. Relationship between morphometric values and values suitable for use in network analysis (speed, time, ...) has been studied using specific examples in appropriately selected territory with using selected vehicle, which was designated as a bicycle. The practical part for the verification of functionality of the suggested methodology has been compared with other models of accessibility, available web-map portals and route planners. The process of transport network evaluation based on selected parameters has been automated in Python programming language as a tool in ArcGIS software, which is attached to the diploma thesis. Powered by TCPDF (www.tcpdf.org)
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Assessments of forest damage using satellite and LIDAR data
Lihanová, Kristýna ; Štych, Přemysl (advisor) ; Bartaloš, Tomáš (referee)
Assessment of forest damage using satellite and lidar data Abstract The main objective of this thesis is to create a methodical procedure used for the evaluation of forest damage in the chosen area of the National Park Sumava, Czech Republic. In this work were combined the multispectral satellite data and data of airborne laser scanning. The forests in this area are heavily damaged mainly due to bark beetle outbreak. You can find here as healthy so damaged forests. Based on this methodology will be differentiated greater number of classes than I found in the literature. In this work was used pansharpened multispectral image SPOT, multispectral image Landsat and airborne laser scanning data with low density points. Another task was to get height information from ALS data in the form of grid. Forest stands were classified using object-oriented classification, which included at first segmentation and then creation of classification base. In classification entered spectral information and height information obtained from the ALS data. Forests were classified into 5 classes and accuracy of both classifications was evaluated using the error matrix and kappa coefficient. SPOT image classification reached kappa coefficient of 68,5 % and Landsat image classification reached kappa coefficient of 72,3 %. From the...
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