Analysis of the use of close-range aerial stereo-pairs for producing a geodetic plan

The thesis presents the analysis of the use of close-range aerial stereo-pairs for producing a geodetic plan. The aim of the thesis is to analyze strengths and weaknesses of stereoscopic data acquisition of stereo-pairs for producing a large-scale geodetic plan, and to compare the data with the reference data represented by classical geodetic measurements. We use a practical case to describe data acquisition process by means of the unmanned aerial vehicle (UAV) Aibotix X6; image processing by means of the photogrammetric software PhotoScan; process of making stereo-pairs and stereoscopic data acquisition performed by the photogrammetric workstation. Photogrammetric products (dense point cloud, digital terrain and surface model, orthophoto) are presented as well as their accuracy and stereoscopic data acquisition quality analysis. Three different methods of data acquisition are compared and their\ud suitability is evaluated. Data evaluation results show that UAV system can be used for large scale mapping. In comparison with reference classical geodetic measurement method, the proposed method is cheaper and faster while producing comparable results. Photogrammetric products show an added value not present in the classical geodetic survey