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Water Object Detection in Image
Čeloud, David ; Španěl, Michal (referee) ; Šilhavá, Jana (advisor)
Bachelor's thesis describes history of remote sensing, image data structure, their processing and analyzing. It defines mulstispectral space and explains basics of quantitative analysis and differences between supervised and unsupervised classification. Implementation section describes designing and developing of program, which will be able to open and process image data and detect water objects in him.
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Utilising satellite imagery for geological mapping and structural analysis
Sokolová, Anna ; Lexa, Ondrej (advisor) ; Martínek, Karel (referee)
The use of remote sensing data is becoming very important in Earth sciences. Satellite images are invaluable for studying hardly reachable places on Earth and they can significantly help increase the efficiency of work in areas with existing field data . In arid areas where rocks are exposed and directly visible at the surface, a lithology contacts mapping can be done based on satellite images. An overview of the possibilities of processing multispectral images is included in the theoretical part of this thesis, as well as a description of previously known methods for performing structural analysis based on remote sensing data. As the main part of this thesis, a new method for finding orientations of planar geological structures including a quality control of the input data was developed and described. This method was then applied in the Bodonchin area of the Mongolian Altai where the metamorphic foliation and pegmatite veins were analyzed. The method showed good applicability in the given area despite its limitations which are also discussed in the thesis.
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Systematical Field Survey in South Uzbekistan
Tušlová, Petra ; Stančo, Ladislav (advisor) ; Mařík, Jan (referee)
The following thesis summarizes two years investigation conducted in Sherabad District in South Uzbekistan. The research was focused on systematic field survey in immediate vicinity of tepas, artificial mounds created by centuries of a human inhabitation. Five different areas were examined in order to follow the settlement extant and chronology. The work was conducted by using satellite imageries in combination with topographical maps. The information collected on the fields were marked in PDA running GIS application and evaluated in computer. The results of the field prospection were verified by using complementary methods of the test pits and of the total pickups. Key words: Central Asia, South Uzbekistan, Sherabad District, topographical maps, satellite imagery, systematic field survey, test pits, total pickups, GIS application.
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Hydromorphological assessment of rivers using distance data sources
Králová, Magdalena ; Matoušková, Milada (advisor) ; Hais, Martin (referee) ; Lehotský, Milan (referee)
The thesis is aimed on hydromorphological assessment with usage of distance data. The distance method QuaWaDis is defined and the usage of results of image processing within the hydromorphological assessment is considered. The aim of the assessment is classification of hydromorphological conditions of water bodies according to Water Framework Directive 2000/60/EC. Distance method is based on visual interpretation of public data. Image processing results can extend the number of parameters of the distance method - object based classification was applied on aerial imagery (in land cover classification), unsupervised classification and image reclassification was applied on multispectral satellite data (in water depths classification). The calibration of distance method and the credibility of the distance data was evaluated in comparison with results of field survey EcoRivHab (Matoušková, 2008). Object based image processing was aimed on accuracy assessment, index of efficiency was defined and the concept of fuzzy logic was applied in accuracy assessment. From consideration of classification efficiency is obvious, that large internally heterogeneous objecs is more effectivelly to vectorise manually. Accuracy assessment with usage of concept of fuzzy logic shows the success of object recognition within each...
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Systematical Field Survey in South Uzbekistan
Tušlová, Petra ; Stančo, Ladislav (advisor) ; Mařík, Jan (referee)
The following thesis summarizes two years investigation conducted in Sherabad District in South Uzbekistan. The research was focused on systematic field survey in immediate vicinity of tepas, artificial mounds created by centuries of a human inhabitation. Five different areas were examined in order to follow the settlement extant and chronology. The work was conducted by using satellite imageries in combination with topographical maps. The information collected on the fields were marked in PDA running GIS application and evaluated in computer. The results of the field prospection were verified by using complementary methods of the test pits and of the total pickups. Key words: Central Asia, South Uzbekistan, Sherabad District, topographical maps, satellite imagery, systematic field survey, test pits, total pickups, GIS application.
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Water Object Detection in Image
Čeloud, David ; Španěl, Michal (referee) ; Šilhavá, Jana (advisor)
Bachelor's thesis describes history of remote sensing, image data structure, their processing and analyzing. It defines mulstispectral space and explains basics of quantitative analysis and differences between supervised and unsupervised classification. Implementation section describes designing and developing of program, which will be able to open and process image data and detect water objects in him.
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