Photographic Image Properties and Their Correlation With the Quality Requirements for Aerial Mapping

Abstract

Recently, cartographic products obtained by the use of photogrammetric methods have been increasingly applied in digital public spaces. The aim of the research was to analyse the properties of photographic images in relation to the developed technical specification for aerial photography project realization to obtain the most efficient, accurate, and high quality aerial cartographic products. Based on photogrammetric data from two aerial photography projects, where the terrain was aerial photographed from different types of unmanned aerial vehicles (TRIMBLE UX5, DJI MATRICE 600 PRO) and cameras (Zenmuse X5, Nex-5T), the properties of the photographic images were analysed, and their correlation with the accuracy requirements for the aerial mapping processes is presented. In order to fulfil accuracy requirements for terrain mapping by the use of UAV-photogrammetry technology, a ground sample distance (GSD) of 5-20 cm is recommended when aerial photography mission is executed from a low-flying vehicle.