National Repository of Grey Literature 4 records found  Search took 0.01 seconds. 
Výpočet stromových charakteristik v dubovém porostu pomocí letecké a pozemní fotogrammetrie
Homola, Petr
The bachelor thesis deals with the utilization of aerial and terrestrial photogrammetry for calculation of main tree variables, diameter at the breast height (DBH) and height. Both methods and unmanned aerial vehicles (UAVs) that were used for purposes of aerial photogrammetry are described by the available literature. The fieldwork is divided into two parts; terrestrial and aerial work. Terrestrial work includes the measurement of tree heights, DBHs and terrestrial photogrammetric imagery. Aerial works includes aerial photogrammetric imagery which was carried out by UAV. All the methods of field works and procedures of office work are described in the methodical section, where a description of the works is given for each activity. The final part of the work consists of result evaluation, comparison of the accuracy of the methods, evaluation of time requirements and assessment, whether the methods could be used in practice.
Výpočet stromových charakteristik v bukovém porostu na základě fotogrammetrického mračna bodů
Ferdus, Michal
This bachelor thesis will focus on determining tree characteristics, which are diameter at breast height (DBH) and tree height using two different methods. The first method is conducted by ground measurement of the instruments currently used. The second method is done by using a combination of ground and aerial photogrammetry using an unmanned aerial vehicle (UAV). Thanks to the subsequent software analysis, DBH and tree position were determined by terrain's photogrammetry, and the aerial photogrammetry generated the height of the individual trees. After colleting all results, these methods were compared for accuracy, time consumption and any potential future use in forestry.

Interested in being notified about new results for this query?
Subscribe to the RSS feed.