|
|
Use of contemporary 3D geoinformation technologies for historical reconstructions of sites: case study Zahrádka u Ledče nad Sázavou
Berka, Rostislav ; Laštovička, Josef (advisor) ; Štych, Přemysl (referee)
Use of contemporary 3D geoinformation technologies for historical reconstructions of sites: case study Zahrádka u Ledče nad Sázavou Abstract This bachelor thesis deals with contemporary 3D GIS technologies and methods used for historical reconstructions, especially reconstructions of lost sites and objects. Thesis contains an overview of technologies, methods and softwares suitable for these purposes. Thesis is focused on quite unique single image-based modeling, which uses geometry of object in the image. There is also brief overview of visualisation 3D models on the internet and web mapping. Thesis introduces a prescription for creating 3D model of lost site. First, TIN is produced from contours of old maps and DMR 5G data using breaklines, which are generated automatically. SFM models of preserved objects and models of destroyed objects acquired through single image-based modeling with help of old archival images, are placed on DTM. The case study area is the lost town of Zahrádka u Ledče nad Sázavou. The results of this work are view scenes and interactive web map aplication for visualisation of 3D model. The accuracy of used single image-based modeling method is compared to the standard SFM technique. SFM had better accuracy. Keywords: 3D model, 3D GIS, single image-based modeling using geometric...
|
|
|
Use of current and historical geospatial data for 3d modeling of hradec králové in different time periods
Šrollerů, Alex ; Laštovička, Josef (advisor) ; Štych, Přemysl (referee)
Use of current and historical geospatial data for 3D modeling of Hradec Králové in different time periods Abstract This bachelor's thesis is mainly focused on historical and current geospatial data and the basics of three-dimensional city modeling. It provides an overview on basic methods, data and software suitable for 3D city modeling in different time periods and possibilities of 3D visualization. The practical part describes the process of creating a 3D model in different time periods, namely the cadastral area of Hradec Králové in the years 1840, 1912, 1952 and present. The model consists of terrain interpolated from ZABAGED contour lines and buildings extruded from vector footprints. Subsequent manual modeling took place in SketchUp CAD software. Historical large-scale maps, contemporary orthophoto and OSM are used for this task. The model is visualized using flyby animations, view scenes, interactive browser and presented on a self-created web page and StoryMap JS. Keywords: 3D model, SketchUp, buildings, DTM, historical data.
|
|
|
Surveying and documentation of part of route Cesta v Luzích (cadastral area Nuzířov)
Maňas, Jaroslav ; Vitásek, Josef (referee) ; Vondrák, Jiří (advisor)
Theme of Bachelor thesis is tacheometric survey of area that includes part of cycle path and contiguous Lubě stream with its joining into reference systems S-JTSK and Baltic Vertical Datum- After Adjustment. It was necessary to build up the survey net before survey works could even start. The net was created by GNSS method and polar method. Detailed survey was executed by a polar method as well. The outcome of these works is thematic map at a scale of 1:500 and also the experimental version of digital terrain model (DTM). Test of accuracy of the map was executed by checking profiles.
|
|
|
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
|
|
|
ANALYSIS OF ACCURACY OF STREAMS AND WATERSHED DIVIDES CONTAINED IN THE GEOGRAPHIC DATABASES OF THE CZECH REPUBLIC
Hnyková, Renata ; Jaroš, Jakub (advisor) ; Uhlířová, Kateřina (referee)
Analysis of Accuracy of Streams and Watershed Divides Contained in the Geographic Databases of the Czech Republic Abstract The aim of this work is to evaluate positional accuracy of stream lines and watersheds in geographical databases of the Czech Republic. Data are compared in several geomorphologically different areas and the influence of terrain topography on positional accuracy of lines is also studied. The teoretical part of this work describes methods of stream lines and watesheds delimitation and methods designed for comparision of positional accuracy of lines. Furthermore, methodology of work involving stream lines and watershed delimitation in DTM (digital terrain model) by ArcHydro Tools and comparision of these lines with the lines in available databases is described. The data used for construction of DTM were obtained by Airborne Laser Scanning. Key words: watershed, stream, position accuracy, DTM
|
|
|
Detection of Terrain Skeleton Lines based on Laser Scanning Data
Jaroš, Jakub ; Lysák, Jakub (advisor) ; Bayer, Tomáš (referee)
The objective of the thesis is to design a new detection method of terrain skeleton lines from airborne laser scanning data. The theoretical part provides a brief introduction to airborne laser scanning issue. There are presented major principles of the technology and procedures applied to create digital terrain model from laser data. There is also described an application of airborne laser scanning in the area of the Czech Republic in detail and follows an exact specification of key terms of the thesis. From the geomorphology, topography and geoinformatics point of view there are defined especially terms like terrain skeleton lines, breakline, valley and ridge. Literary research consists of the summary of already published method of breakline detection. There are algorithms focused on data processing in form of original point cloud as well as algorithms focused on processing data in the raster form. Primary goal of the theoretical part is to express major principles of already published method of detection. The practical part firstly introduces data that are used further in the thesis. The objective of the thesis is a description of a new method of detection of terrain skeleton lines. The method processes laser data converted into raster form and it is based on the analysis of transverse elevation profile...
|
|
|
Design of Pravčická brána 3D model and its integration with 2.5D TIN terrain model
Brýdl, Ivo ; Brůha, Lukáš (advisor) ; Lysák, Jakub (referee)
The main goal of this thesis is to design integrated model containing a three-dimensional representation of Pravčická brána rock arch and 2.5D TIN model of surrounding terrain. Point cloud from airborne lidar measurements has to be classified into ground and non-ground features. The ground points are the basis of the TIN terrain representation. Second part of this thesis is focused on methods for reconstructing 3D surface from given points set retrieved with ground-based lidar measurement. The thesis describes the process of meshing point cloud with Poisson surface reconstruction. Finally, these two models are oriented and translated to real coordinates in order to form integrated hybrid model covering part of České Švýcarsko National Park.
|
|
|
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
|
|
|
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.
|
|
|
Mapping of the Litavka catchment using GPS
Hojcsková, Daniela ; Matějíček, Luboš (advisor) ; Brůna, Josef (referee)
This thesis is aimed on the study of Global Positioning System (GPS) and its utilization possibilities in nature sciences such as ecology, hydrology, botany and the others. The main contribution of this work is the investigation of current possibilities of the most accurate data collection by using GPS and their subsequent processing in GIS with focus on small catchment. Other methods of terrain data collection are described and compared with GPS in this work, as well. Practical part of the thesis focuses on characteristics of the locality, technical equipment and data editing gained in terrain. The study locality is the Litavka catchment, which is situated in Brdy. The geographical ground data, were gained from ZABAGED and were completed with results of own measuring in terrain. The output of the thesis is the digital terrain model of upper stream of the Litavka River modified by interpolation. Key words: GPS, DTM, GIS, mapping, catchment, Litavka, interpolation
|
guest ::
