Abstract
. Today, three-dimensional models of objects and terrain are a very popular product and are found almost everywhere in our life: in the gaming and film industries, in various industries and complex technological areas such as architecture, construction, medicine, etc. The article considers the creation of a three-dimensional terrain model based on data obtained from an unmanned aerial vehicle to the territory of an aluminum alloy plant located in the city of Podolsk (Lviv microdistrict), Moscow region. The initial data for processing were obtained by a passive aerial survey method – the Phantom 4 PRO apparatus. The main part of the article is devoted to the stages of processing in the Agisoft Metashape software, which include such processes as: importing and aligning the position of cameras (as well as their optimization); building a sparse and dense point cloud; reconstruction of a polygonal three-dimensional terrain model; applying a texture created on the basis of images;optimization of the model and consideration of possible formats for export to third-party software. As a result of the work, a three-dimensional terrain model was obtained with an accuracy of binding to the centers of images of 1.14 m. The time spent on processing the survey data from an unmanned aerial vehicle is no more than 5 hours.
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