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Blocky accumulation mapping from RPAS LiDAR and image data
Kolář, Michal ; Potůčková, Markéta (advisor) ; Dušánek, Petr (referee)
With merit of constant development in measuring technology it is possible to obtain data of high resolution and accuracy describing Earth's surface. During the project "Vegetation and Krkonoše tundra change detection method development by analyzing data from multispectral, hyperspectral and LiDAR UAV sensors" high quality data were acquired, with point density reaching up to 800 points/m2 and orthophoto of GSD 0.02 m. Data are capturing cryoplanation terraces in NE parth of Luční hora in three time periods: June, July and August 2019. The aim of this work is to devise a methodology of blocky accumulation mapping and evaluating detail of data. Key words: blocky accumulation, laser scanning, UAV, point cloud, orthophoto, segmentation
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Lost landscapes of mountain agriculture of Šumava (Bohemian Forest): reconstruction, 3D models of landscape and possibilities of their presentation on web
Polák, Mojmír ; Kupková, Lucie (advisor) ; Štych, Přemysl (referee)
The study deals with the model area of the village Prášily in Šumava (Bohemian Forest), which is analysed in the framework of the project "Heritage of lost landscapes: identification, reconstruction and presentation". The goal was to evaluate landscape changes since the middle of the 19th century until present with use of maps of stable cadaster, historical orthophotos, current ortophotos and to create 3D reconstruction models of the landscape and a 3D photorealistic model of the extinct village Hurka. The next aim was to evaluate possibilities of presentation of 3D models on the internet and to find an optimal solution for their web presentation. The theoretical part describes possible methods of evaluation of landscape transformation, development of landscape in the Czech Republic since the middle of 19th century, theory of 3D models, the use of 3D models in practice and the methods of presentation of 3D models. The practical part consists of two landscape models, that were visualized using ArcGIS Online Web Scene, Web Viewer and a 3D model of the extinct village Hůrka with fly- through animation. The models were created using Sketchfab, 3DWarehouse and Google Poly. Sketchfab was chosen as the best solution because of its good visuals and good display on mobile devices.
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Evaluation of data captured by UAV
Martináková, Veronika ; Setnický, Viktor (referee) ; Kalvoda, Petr (advisor)
The master´s thesis deals with the application of unmanned aerial vehicle (UAV) in photogrammetry and mapping. The first part describes the UAV that was used for imaging, legislative restrictions resulting from its operations, planning and realization of the flight. The second part of this thesis is focused on processing results, especially on evaluation the accuracy of the results gained by UAV with and without a GNSS module. The data are evaluated in the 3rd accuracy rating class (ČSN 01 3410). The theoretical principles are explained as well. The main aim of the thesis is to demonstrate the effective use of the GNSS module Emlid Reach and the unmanned aerial vehicle in geodesy.
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Evaluation of data acquired by UAV
Setnický, Viktor ; Hanzl, Vlastimil (referee) ; Kalvoda, Petr (advisor)
This thesis deals with the application of unmanned aerial vehicles (UAV) in photogrammetric purposes useful in geodesy. The UAV that was used for imaging is described in the first part, also there are introduced two programs which were used for data processing. A system of mission planning and data collecting is shown on the ortofoto creating as an example. The second part of this thesis deals with testing of the accuracy through terrestrially independently measured points. The main aim of the work is to demonstrate the high potential of UAV devices for geodesy purposes.
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Data sets and map products of the State Administration of Land Surveying and Cadastre and their usability for land consolidation.
HONETSCHLÄGER, Petr
The aim of the master's thesis is to describe the map products of the State Administration of Land Surveying and Cadastre and their applicability in planning the Land consolidation. This master's thesis consists of two parts. In literary research are explained basic terms and describe all the map series, administered by the State Administration of Land Surveying and Cadastre. There are described contents and possibilities of using individual maps, including their availability. In practical part of master's thesis are describes the maps used in the Land consolidation from different viewpoints.
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Inventory of farm buildings using unmanned aerial vehicle and comparison
BOŽÁK, Pavel
This dissertation deals with unmaned aerial vehicles and their use in an accurate photogrammetric mapping. The very first part of my thesis describes a history of UAV (unmaned aerial vehicles) and a theoretical introduction of the issue. In the second part of this thesis a specific example of mapping agricultural area with a missing building in cadastral map is solved. The disertation is focused on an aerial photo-shooting and then on matching the pictures in the software Agisoft Photo Scan. The result of the work is a detailed ortophoto map of the agricultural area where the missing building is exactly positionally determined.
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Automatic detection of zebra crossings from aerial images
Tomíček, Jiří ; Potůčková, Markéta (advisor) ; Fiala, Radek (referee)
There are a number of studies that deal with detection of road network from image Remote Sensing data. However, little work has been done on algorithms for horizontal road signs detection from Remote Sensing data. On the other hand there are many papers that deal with horizontal road signs detection in the field of Computer vision. Theoretical part of master thesis sumarizes the methods that are used to detect objects from both, Remote Sensing and Computer vision data. In the practical part an algorithm of automatic Zebra-crossing detection based on Aerial Images and vector road layer is designed. Zebra-crossings are detected using matching of image with set of predefined patterns. Obtained set of potential objects is then filtred using geometric and relational criteria. At the end of this thesis, the proposed algorithm is validated and the results are discussed with literature. Key words: Zebra-crossing, Horizontal road signs, Image matching, Aerial images
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Historical Topographic Database of Luční bouda and Surroundings Based on Early Maps and Ortohphotos
Chytilová, Barbora ; Lysák, Jakub (advisor) ; Suchá, Renáta (referee)
HISTORICAL TOPOGRAPHIC DATABASE OF LUČNÍ BOUDA AND SURROUDINGS BASED ON EARLY MAPS AND ORTOHPHOTOS Abstract The bachelor thesis aims to creating the digital topographic database of the Luční Bouda region in Krkonoše capturing its development in time. The database contains early maps and orthophotos data taken within the area. Among crucial archival spatial data covered, in the database we can count maps of Stabilní katastr, III. military mapping, aerial snapshots from 1936, Map of the Czechoslovakia from 1937, Map of State in scale 1 : 5 000 as well as orthophotos taken in year 1953 and later on. The theoretical part of the thesis includes introducing the area of interest, hictorical cartography, actual data and theoretical information involving digital topographic database creation with time constituant. The research deals with project itself followed by procedure of filling the database with data. The conclusion involves brief discussion on the development of the area in time. Key words Luční bouda, Krkonoše, digital topographic database, early maps, orthophotos
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3D RECONSTRUCTION OF ABANDONED SETTLEMENTS OF THE CENTRAL POVLTAVÍ
Andrštová, Martina ; Štych, Přemysl (advisor) ; Jaroš, Jakub (referee)
3D reconstruction of abandoned settlements of the central Povltaví ABSTRACT This work deals with the use of Geoinformatic systems to create the three-dimensional model of an extinct landscape. The main subject of this bachelor work is the three-dimensional reconstruction of extinct municipalities in the central area of the Vltava River. The main task was to create digital terrain model of the original Vltava valley. The passage from Zvírotice to Svatojánské proudy has been chosen as the model territory. Two selected municipalities Zvírotice and Živohošť were thoroughly worked up. Many data sources were used in this work, such as historical photographs, historical aerial photographs or current orthophoto maps. Digital terrain models were created with the help of these datas and then the models were overlain with the orthophotos. 3D models of buildings and vegetation were put in the terrain models. Two periods were compared, 50th of the 20th century and present. Results of this work are fly-by animations and perspective scenes. The results will be used in newly built museum in Chotilsko town. Keywords: 3D reconstruction, DTM, land cover changes, orthophoto
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3D reconstruction of landscape in abandoned villages of borderlands and military zones
Jelének, Jan ; Štych, Přemysl (advisor) ; Oršulák, Tomáš (referee)
3D reconstruction of landscape: A case study of extinct municipalities in Czech borderlands and military areas Abstract This work deals with theoretical and practical possibilities to use GIS to create three-dimensional model of landscape changes. The object of the work was the creation and visualization of three-dimensional model of extinct municipalities Padrť in a military area Brdy and Košťálkov in the borderlands. The work used many available data sources, such as historical aerial photographs, historical photos, current orthophotos or historical maps. These data and specialized software were used to create digital models of the selected area, including three-dimensional models of buildings and vegetation, with emphasis on historical closeness. Work was focused on three selected periods of history: 40th of the 18th century, 30th to 50th of the 20th century and present. The work resulted in fly-by animations and perspective scenes, which are compared with historical photographs. Historical models are also confronted with each other by a dynamic fading in fly-by animations.
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