Integrating surveying, photogrammetric, and remote sensing data to generate large-scale maps

Integration means the combination of smaller elements into a coherent system that can function as a whole. In civil engineering, integration combines data from different sources to yield complete information about an object. Data synergy significantly helps consolidate all types of data while considering their content, quantity, and diversity of formats. It involves the removal of inconsistencies and redundant pieces of information from acquired data, resulting in a consistent image (dataset). A combination of survey data, maps, photogrammetry, and remote sensing gives a 3D spatial database. A holistic approach to object data acquisition with diverse methods, techniques, and measuring tools facilitates high-quality measurement results. Information acquired this way, supplemented with spatial data from official (state-controlled) surveying and cartographic resources, paves the way for generating large-scale maps, including the master map, in line with applicable legal and technical requirements. The paper describes the process of acquiring, processing, and integrating geospatial data of a specific structure and its surroundings, using point clouds from terrestrial laser scanning, an orthophoto, databases from the State Surveying and Cartographic Inventory, and classical tacheometric surveys and GNSS-RTK surveys.