About the creation of a digital 3d model of trees in the city of Krasnodar

DOI: 10.35595/2414-9179-2024-2-30-412-429

View or download the article (Rus)

About the Authors

Anatoly V. Pogorelov

Kuban State University,
149, Stavropolskaya str., Krasnodar, 350040, Russia,
E-mail: pogorelov_av@bk.ru

Andrey A. Laguta

Kuban State University,
149, Stavropolskaya str., Krasnodar, 350040, Russia,
E-mail: alaguta@icloud.com

Evgeny N. Kiselev

Kuban State University,
149, Stavropolskaya str., Krasnodar, 350040, Russia,
E-mail: enkiselev@gmail.com

Eduard M. Vertlib

LLC Aerogeomatika,
22/1, Frunze str., Krasnodar, 350000, Russia,
E-mail: kakipastovitch@yandex.ru

Abstract

Among Russian cities, Krasnodar demonstrates phenomenal dynamics of population growth and urban infrastructure development. The growth of the city is accompanied by high and dense buildings, technogenic transformations of the soil and vegetation cover, leading to disturbances in the thermal and water exchange regime and other little-studied geophysical effects. These effects, in turn, lead to disturbances in the physiological comfort of residents. Assessing the state of a large city as an urban system in terms of local climate, provision of open spaces, and landscaping is possible with a highly accurate three-dimensional digital model of the city. The article presents the results of developing a three-dimensional model of a large city (Krasnodar) based on airborne laser scanning data, i.e. lidar technologies. The initial data for creating the model is a cloud of laser reflection points (5.2 billion points with a density of 5–15 points per 1 m2) and aerial photography materials over an area of 839 km2. The created 3D model combined the main digital layers: a digital elevation model, hydrographic objects, buildings, and tree plantations. In the conditions of Krasnodar, located in a semiarid climate, special attention is paid to modeling tree plantations using laser scanning data with the accuracy of an individual tree. A modeling technique is proposed, including tree recognition, artifact removal, and calculation of the characteristics of each tree (coordinates, height, radius and projection area of the crown). Based on the obtained database, a set of analytical maps was constructed that operate on quantitative indicators of landscaping (tree density, projective cover area) and reflect the spatial structure of tree plantations in the city of Krasnodar. The maps clearly show landscaping defects both within functional zones and in the citywide landscaping system. The scope of the research is: urban planning, improvement of architectural and construction design, increasing the technical and economic feasibility of design solutions, improving the landscaping system and a reasonable assessment of the quality of the urban environment.

Keywords

urban system, aerial laser scanning, 3D modeling, spatial analysis

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For citation: Pogorelov A.V., Laguta A.A., Kiselev E.N., Vertlib E.M. About the creation of a digital 3d model of trees in the city of Krasnodar. InterCarto. InterGIS. Moscow: MSU, Faculty of Geography, 2024. V. 30. Part 2. P. 412–429. DOI: 10.35595/2414-9179-2024-2-30-412-429 (in Russian)