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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Konstrukce 3D skeneru a analýza modelu naskenovaného objektu

Palko, Petr January 2017 (has links)
Palko, P. 3D scanner design and model analysis of the scanned object. Diploma thesis. Brno: Mendel University, 2016. The work introduces the basic principles of 3D scanning technology. In the work describes the basic hardware components required to construct a 3D scanner and implement applications processing the scanned data. The work also includes an analysis of the scanned object.
12

Zaměření skutečného stavu roubené stavby v obci Zděchov, včetně zpracování geodetické a stavební dokumentace

Blažková, Kamila January 2017 (has links)
The thesis deals with the measurement of actual state of timbered building in the village Zděchov. Thesis consists of geodetic surveying of house, laser scanning of building, description of laser scanning procedure and cloud of points processing methods for further utilization in the work. The result of measurement is current state building model and proposal of reconstuction.
13

Multispektrální 3D skenování s vysokým rozlišením a jeho aplikace v medicíně / High-Resolution Multispectral 3D Scanning and its Medical Applications

Chromý, Adam January 2017 (has links)
Termovizní zobrazování i 3D skenování jsou v současné době rychle se rozvíjející technologie. Obě technologie mají mnoho výhod, které by mohly být užitečné v medicíně. Jejich datová fúze přináší ještě více nových diagnostických informací, než kdyby byly použity samostatně. Cílem této práce je vývoj multispektrálního 3D skenovacího systému založeného na novém způsobu snímání pomocí robotického manipulátoru vybaveného laserovým snímačem, teplotní kamerou a barevnou kamerou. Navržené řešení přináší jak flexibilitu, tak přesnost. Tento systém skenování je dále využit v klinických aplikacích, aby byly ověřeny jeho schopnosti a ukázány přínosy nad rámec současného stavu techniky.
14

Vývoj obličeje u dětí ve věku od 6 do 12 let: longitudinální studie / Facial development in children 6 to 12 years old: longitudinal study

Tošovská, Hana January 2016 (has links)
This study is based on evaluative longitudinal data of facial development in a group of children from 6 to 12 years. The research used three-dimensional models of the faces of 18 girls and 15 boys that were scanned at yearly intervals. These models were used to follow development of the face and its particular areas including analysis of variability (PCA). Developmental changes were observed for each gender separately as well as for the development of sexual dimorphism. Results were visualized by using superimposed color maps of average faces of a particular age group and maps depicting the statistically significant differences in individual areas. The presented data exhibited growth in the face of both genders, while slightly bigger changes in the form of the face were observed in the boys' samples. For girls and boys the most intensive growth was found in the direction of the width and height of the entire face and the nose, especially in the direction of length. These changes took place throughout the whole studied period of growth, yet more intensive growth was evident for girls beginning at age 10 years and for boys from 11 years onward. Shape changes also occurred with age for both genders: the face gradually narrowed, the cheeks flattened and a more retruded position of the forehead...
15

Modelování vybraných geometrických parametrů lesních porostů z dat leteckého laserového skenování / Modelling of selected forest geometric parameters from airborne laser scannig data

Sedláčková, Oldřiška January 2014 (has links)
Modelling of selected forest geometric parameters from airborne laser scanning data Abstract The main aim of this work is to approximate the shape of a tree crown with mathematically describable 3D shape based on airborne laser scanning (ALS) data. And consequently derive geometrical parameters describing the tree from this model. Included in the work is a custom designed algorithm based on angular segmentation. Measured results of this algorithm are then compared to an algorithm based on RANSAC and field measurement. The first part of this work describes airborne laser scanning, its use to derive characteristics of forest stands and individual trees and the theory of tree crown modelling. The next part contains a description of both algorithms and presentation of results and field measurements. The conclusion summarizes and evaluates the outputs of the custom angular segmentation algorithm and discusses its possible modifications. Keywords: airborne laser scanning, tree height, crown width, crown height, crown cover, crown volume, crown shape, RANSAC
16

Koregistrace dat leteckého laserového skenování a leteckých měřických snímků / Coregistration of airborne laser scanning data and aerial images

Pokorný, Tomáš January 2013 (has links)
Coregistration of airborne laser scanning data and aerial images Abstract This thesis is dealing with the co-registration of aerial laser scanning and aerial images. Theoretical part with research of current methods puts emphasis on methods suitable for remote sensing datasets. Part of the thesis is about pre-processing data for co-registration and DSM production. Selection of co- registration methods for remote sensing is based on previous researches. Selected co-registration methods are applied on datasets from EuroSDR research project and ČÚZK dataset. Application is realised by programming codes and functions that were created for this purpose in Matlab. Possibilities of usage, advantages and disadvantages of methods are being mentioned in the next parts of the thesis with emphasis on time of the computation and final accuracy. The function programmed in Matlab allows comparison of co-registration methods and allows the user to decide which of the co- registration methods to use on input datasets. Discussion section describes the possibilities of method extensions and problematic parts across the whole co-registration process. Keywords: co-registration, laser, scanning, images, photogrammetry, remote sensing, coordinate, image matching.
17

Určení záplavového území a hydrotechnické posouzení objektů na vybraném úseku vodního toku Mastník na podkladě DMR 5. generace / Determination of floodplains and hydrotechnical assessment of Mastník water flow based on the DMR 5G data

Čápová, Pavlína January 2016 (has links)
This work engages in the watercourse called Mastník. It focuses on the determination of flooded areas for couple of series (Q5, Q10, Q50, Q100) and hydro-technical assessment of particular objects. The chosen section is situated on cadastral area of town Sedlčany in the Central Bohemia region. Its length is 1.973 kms and there is located 5 water management objects reaching to the flow profile of the watercourse. The data for this dissertation has been gained by the Czech State Administration of Land Surveying and Cadaster. It is about the digital relief of the 5th generation of aerial laser scanning. The laser rays are not capable of penetration the water surface, and thus describe the shape of the water-sources bed. So the tool called CroSolver was used to dig the water-sources bed. Then the hydrodynamic model has been created in program called HEC-RAS. From the results of hydrodynamic model then was evaluated the real water-technical state of the object. The outgoing data (dots defining the flood range to the surroundings) was after then inserted to the program ArcMap. Here the flood lines and from them the flood zones were created based on the particular series of the flows.
18

Určení záplavového území a hydrotechnické posouzení vodního toku Říčanský potok / Determination of floodplains and hydrotechnical assessment of Říčanský water flow

Bezděková, Veronika January 2016 (has links)
This thesis deals with determining the flood lines and hydrotechnical assessment of the Říčanský water flow and objects that interfere with the flow profile. Hydrotechnical assessment preceding hydrological study of catchment. The basis for this work was digital model relief Czech Republic, which obtained from Airborne Laser Scanning. This method is considered to be of the most accurate methods for altimetry data obtained, but the near-infrared laser beam used in this method cannot penetrate water masses. The result of this problem is error as the extracted cross sections lose a significant portion of their flow area. These errors can be removed to recess the channel using specialized software Crosolver tool. For hydrotechnical assessment is used hydrodynamic model in HEC-RAS. On the basis of results are determined the flood line for N-years flows (5-years flow, 20-years flow and 100-years flow). The final part of this work deals evaluation of hydrotechnical assessment Říčanský water flow, object and floodplains.
19

Vliv doby lovu na výběr mikrohabitatu u jelena evropského v Doupovských horách / Effect of hunting pressure on microhabitat preference of red deer in the Doupov Mts.

Křivan, Lukáš January 2017 (has links)
This master thesis is focused on GPS telemetry of red deer (Cercus elaphus) in the environment of the Doupov Mountains in the Military training Hradiště. In the first part of the thesis are solution of introduction to general issues preferences and the occurrence of red deer and other related ungulates. The second part of the thesis is focused on my own research. The Positional data monitored hind Dorothy was collected in the period 1. 7. 30. 3. 2014. The aim was to determine, if the time hunting have to influence to microhabitat preferences on the hind of red deer and if the selection of posts are accidental or is influenced by the characteristics of the post. The Research conducted of data inventory from GPS using collar and of data, which arised laser air scanning the surface (technology LiDAR). For comparison and finding the preferences of the hind was created the network accidental comparative points. Field exploration and LiDAR technology consider the dependence of the average height of vegetation around of Dorothy positions the period of the year and the time of day. Data was evaluated ANOVA for the non-parametric data distribution (Kruskal-Wallisova) and the program Microsoft Excel. At each station has been carefully identified information about the location including visibility of the hunting-game device and height of stand. The results indicate that the average height of the vegetation was at the stands searched by the hind of red deer during a sunrise and a day. The lowest was in night and at sunset. The hind of red deer prefer, in hunting time during the day, thick scrub and during the night more open spaces with larger views properties, where she actively looking for food. The most preferred visibility at the time of hunting and off time hunting was to the eastern direction. The most least preferred visibility was always to the western direction. Minimum presence of the hunting-game device is in the time of hunting during at the day and sunrise, maximum at night. This behavior was probably caused increased hunting activity. The results of the thesis may be used in forestry management, for forest protection and by planning of hunting management of the red deer populations.
20

Tvorba databáze krasových jevů na území ŠLP Křtiny z dat leteckého laserového skenování

Balková, Marie January 2016 (has links)
This diploma thesis deals with description of the karst and its typical phnenomenons with emphasis on surface figures sinkholes. Further, it dicribes the airborne laser scanning (ALS) technology, data collection and processing procedure and utilization for the puropose of terrain depressions indentification based on the researches and processes of foreign experts. From these available studies, the most suitable methodics is chosen and applied to Digital Elevation Model of 5th generation (DEM 5G) data. The results of this aplication are compared with available sinkholes databases kept in the PLA Moravian Karst office and own terrain research.

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