Využití bezpilotních letadel pro pasportizaci zeleně v blízkosti vodních toků

Abstract

This thesis deals with the evaluation of the possibilities of using unmanned aircraft to create vegetation passports around water streams, which are standardly created using ground geodetic measurements. The introductory part of the work is devoted to a theoretical introduction to the issue of passportization, drones and mapping with their use. Data collection and evaluation took place in five localities in the Moravian-Silesian Region, RGB images were taken in the growing and non-growing seasons, and laser scanning was used at one of the localities. Automatic detection of trees was realized by two methods - by searching for tree trunks directly in the cloud of points and also by using the so-called Canopy Height model, ie a raster model representing the height model of vegetation. The obtained results were compared with reference data representing the real state. Unfortunately, both used methods of tree detection showed only a low success rate of tree detection, so it is not possible to recommend them for the passportization of vegetation around water streams.