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THE USE OF IMAGE MATCHING METHODS IN GEOMORPHOLOGICAL ANALYSIS
Šiková, Zuzana ; Potůčková, Markéta (advisor) ; Hodač, Jindřich (referee)
The use of optical scanning methods in geomorpho-analysis Abstract Main goal of this thesis is to find out if it is possible to use Structure from motion (SfM) method for analyzing geomorphological objects. Four geomorphological features in three different places within Pilsen-North region was used for testing this method. These objects with very dissimilar dimensions and shapes was scanned for this testing in various light conditions. All used data-sets was entirely created by author of this thesis. The data was initially processed by Agisoft Photoscan Professional Ediditon v1.1.6 and VisualSFM v0.5.26 to create spatial models. These models was afterwards processed in CloudCompare v2.6.1 and MeshLab v1.3.3. This software was used for clipping and merging of 3D models and for converting 3D models in to real dimensions. These real sized spatial models was then contrasted together by creating comparing entities. Outcomes are evaluated in the thesis conclusion. Keywords: Structure from motion (SfM), SIFT, RANSAC
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THE USE OF IMAGE MATCHING METHODS IN GEOMORPHOLOGICAL ANALYSIS
Šiková, Zuzana ; Potůčková, Markéta (advisor) ; Hodač, Jindřich (referee)
The use of optical scanning methods in geomorpho-analysis Abstract Main goal of this thesis is to find out if it is possible to use Structure from motion (SfM) method for analyzing geomorphological objects. Four geomorphological features in three different places within Pilsen-North region was used for testing this method. These objects with very dissimilar dimensions and shapes was scanned for this testing in various light conditions. All used data-sets was entirely created by author of this thesis. The data was initially processed by Agisoft Photoscan Professional Ediditon v1.1.6 and VisualSFM v0.5.26 to create spatial models. These models was afterwards processed in CloudCompare v2.6.1 and MeshLab v1.3.3. This software was used for clipping and merging of 3D models and for converting 3D models in to real dimensions. These real sized spatial models was then contrasted together by creating comparing entities. Outcomes are evaluated in the thesis conclusion. Keywords: Structure from motion (SfM), SIFT, RANSAC
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The use of LIDAR data for vegetation detection and visualization
Šiková, Zuzana ; Štych, Přemysl (advisor) ; Potůčková, Markéta (referee)
The use of LIDAR data for vegetation detection and visualization Abstract The main object of this thesis is to evaluate the available software products for vegetation detection and visualization through the use of LIDAR data. The area of interest covers 200 ha and is situated in the area of Klínový důl nearby Špindlerův Mlýn. Data which are used in this thesis was provided by The Krkonoše mountains national park administration. The cloud of points was analyzed by five different programs: ArcGIS 10.1, LAStools, ENVI LIDAR 3.2, BCAL LIDAR Tools a LP 360. Cloud of points was separated in each program to obtain just the points which represent vegetation only. In the next step the elevation above ground level of every single point was calculated and then the cloud of points was divided in to three categories appropriate with the vegetation height. Outcomes of each program are compared and evaluated at the thesis conclusion. Keywords: LIDAR, airborne laser scanning, vegetation detection
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