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The purpose of this thesis is to evaluate utilization of terrestrial and aerial photogrammetry in the forest inventory process. It describes and analyzes data collection and processing in Agisoft PhotoScan and ArcGIS software, with the use of automatically calculated tree parameters from a photogrammetric point cloud obtained by imaging the inside of the forest stand in combination with an imagery from air using unmanned aerial vehicle (UAV). Individual trees were identified and modelled using an algorithm, next cuts at the breast height were created from the photogrammetric cloud and finally diameter in breast (DBH) was calculated for each tree as well as the tree height was assigned to the position of each tree stem. The error of the diameter estimation was observed to be 3,3 cm root mean square error (RMSE) and the height estimation error was 1,3 m. Apart from the mentioned accuracy, the main advantage of the proposed work is shorter time demand for field measurement; we could complete both inventories of 1 hectare forest stand in less than 2 h of field work.

The aim of the thesis is to describe and evaluate the use and accuracy of the individual geodetic methods and their development focus for the spatial division of small structures, such as monuments, fountains, statues and other objects. Describes the aforementioned methods and necessary equipment for geodetic measurements from eklimetru at table methods to modern laser scanners. Are described in detail methods of photogrammetry and laser scanning. In the laser scanning is very interesting its rapid development. We already have the possibility to use very advanced technology, so we can obtain three-dimensional images useful mainly for documentation of monuments and other buildings.

This thesis deals with methods of surveying the facade of the historic building. The introductory section is a brief history of measurement and guidelines, as well as various methods are described from oldest to youngest, including their accuracy in targeting the facade. In more detail, a method for scanning and photogrammetry, which is currently the youngest methods used in surveying facades. In conclusion, the evaluation methods in terms of accuracy and usability. The aim is to describe and evaluace different methods of surveying from history to the present, including the necessary instruments and their accuracy.

The task of this diploma thesis is technical solution for deformation measuring of motorcycle components. By reason of the technical discretion, technology of measurement was changed to another, using image processing. Retrieval which describes fundamental principle of method named photogrammetry and the main conditions of measuring. For a practical testing the carbon composite tube of main motorbike fork was used. It was loaded a with a bending moment. Due to measuring technology was changed, so the design of loading bench was change too. In the end of diploma thesis is appreciation of practical experience discovered in writing of this thesis.

The aim of this thesis is to devise a method for objective classification of floodplain based on spatially accurate data from UAV that allows identification of the fundamental features of floodplain and channel arising from or affecting by the floods activities. Background research is focused on floodplain forming processes; types of flood on our territory and its geomorphological effects, as well as a brief description unmanned aerial vehicle and their applicability in natural science and the flood. Proposed method was carried out on the test section - a part of meander of Javoří stream in Šumava Mountain - then was tested on complex meander belt of the same stream. Proposed method is based on applicability of standard objective classification. Elementary products from photogrammetric analysis - 2D orthophoto and 3D digital surface model - are used as basic input data. Another aim of theses is to discuss applicability of this method for assessment of fluvial form, its limits and potential development. The results indicated that success of classification will increase significantly the involvement of 3D data to classification, which from standard data from the UAV, despite the lack of absence multispectral bands doing a very valuable source of information for mapping and analysis, for example, the...

The Digitization and Visualisation of Historical Globes Abstract The aim of this thesis is to design and verify in practice (semi)automated way of digi- talisation of historical globes. Problematics of point cloud is secured by program Agisoft PhotoScan. The subsequent image processing (data filtering, interpolation, edge enhancement) are performed by own program in Matlab. The result is a universal methodology digitization Globes applicable in almost all cases. As input are included in photos of globe and the output is a raster or mosaic grid showing the surface of the globe. The result is presented in the form of a virtual model of the globe. The methods are described in detail, including mathematical foundations and are subject to criticism. Key words: historical globes, photogrammetry, map projection, image correlation, Matlab

The diploma thesis Geometric Principles of Photogrammetry deals with constructive photogrammetry and geometrical reconstruction of horizon- tal and oblique image. The paper also contains a chapter on photogrammetry as a subject of science and a chapter on three-point perspective. Graphical me- thods for reconstruction of individual images are used. At the end, the thesis deals with the geometric reconstruction of two images and the reconstruction of the image using the computational software. The thesis is intended for students of technical and some of the natural science universities, students of grammar schools and technical high schools and to all who are interested in photogram- metry. The main part of the diploma thesis is elaborated in the form of solved examples and provides instructions for an extension of the descriptive geometry education at high schools and universities. The text of the work is complemented by a number of pictures and spatial visualizations that were created in a modern 3D modeling software and form a substantial contribution of the thesis.

Topographic mapping of rock formations using GIS methods Abstract This thesis deals with issues of creating 3D models of rock formations with data from terrestrial laser scanning, close range photogrammetry and UAV photogrammetry. The theoretical part focuses on explaining functioning and usage of those methods. Beside that there is described issues of 3D point cloud filtering. Practical part of this work describes data collecting and processing procedure. Further there is proposed filtering process which aim to remove noise points from point clouds and remove vegetation with combination of vegetation index ExG, clustering algorithm DBSCAN and Hough Transform. The proposed method is tested on the selected rock formation in Bohemian Switzerland National Park. The evaluation of the proposed method is based on comparison of models filtered with proposed method with reference models, which are filtered manually. Finally, the achieved accuracy of the models is evaluated using geodetic measurements. key words laser scanning, photogrammetry, UAV, point cloud, data filtering

This diploma thesis examines the impact of selected factors on the measurement accuracy of Tritop photogrammetry system and verifies the validity of theoretical predictive formulas. Primary attention is given to factors that are easily influenced by the inspector - namely number of captured images, shooting distance, number of scale bars and number of coded targets. In addition, experiments dealing with the measurement automation and the use of external color filter are also described in this thesis. Seven scale bars placed on a jig of cube shape were subject of the measurements (according to VDI/VDE 2634 standard). Two approaches were used in order to obtain measurement deviations – reference values, from which the measured data were subtracted to obtain deviations, were known due to the use of scale bars. Second approach consisted in evaluation of deviations from software Tritop Professional. The results showed that the number of photographs and shooting distance have the greatest impact on measurement accuracy of Tritop system. The accuracy was also influenced by number of coded targets in the scene or by use of the external green filter. Measured data were compared to the values obtained from predictive formulas. The results showed that the formula defined by the GOM company has a prediction accuracy of more than 96 %. However the formula is dependent on the input parameter called “Image accuracy” for which the value recommendations are made in this work. The results of this work can help predict measurement uncertainties more precisely and optimize the measurement methodology of Tritop photogrammetry system.