{'fraction_non_alphanumeric': 0.013437849944008958, 'fraction_numerical': 0.006718924972004479, 'mean_word_length': 5.04054054054054, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Building reconstruction from aerial images and creation of 3D topologic data structure

The interest in 3D GIS increases due to developments in technology and necessity of users to cope with more complex tasks. Questions related to data acquisition, data storage, data analysis and data visualization are topics for investigations. A key issue on the way of building a 3D model, is an adequate data structure capable to respond to various user queries. The paper elaborates on problems related to 3D model construction for buildings from aerial images, using manual stereo digitizing. The approach relies on a data model based on the 3D Formal Data Structure, which supports 3D topology. The emphasis of the presented work is on an automatic data structuring. The outcomes from the implementation work show that topology facilitates the process of both data acquisition and data visualization.