Evolution of the build-up volume in Luxembourg City using 2D and 3D remote sensing data based on GEOBIA approach and LiDAR point cloud analysis.

Research output: Contribution to conferenceAbstractpeer-review

Abstract

Understanding how, where, and when a city is expanding can inform better ways to make our cities more resilient, sustainable, and equitable. This paper explores urban volumetry using the Building 3D Density Index (B3DI) in 2001, 2010, 2019, and quantifies changes in the volume of buildings and urban expansion in Luxembourg City over the last two decades. For this purpose, we use airborne laser scanning (ALS) point cloud (2019) and geographic object-based image analysis (GEOBIA) of aerial orthophotos (2001, 2010) to extract 3D models, footprints of buildings and calculate the volume of individual buildings and B3DI in the frame of a 100 × 100 m grid, at the level of parcels, districts, and city scale. Findings indicate that the B3DI has notably increased in the past 20 years from 0.77 m3/m2 (2001) to 0.9 m3/m2 (2010) to 1.09 m3/m2 (2019). Further, the increase in the volume of buildings between 2001–2019 was +16 million m3. The general trend of changes in the cubic capacity of buildings per resident shows a decrease from 522 m3/resident in 2001, to 460 m3/resident in 2019, which, with the simultaneous appearance of new buildings and fast population growth, represents the dynamic development of the city.
Original languageEnglish
Publication statusPublished - 13 Oct 2022
EventLuxembourg Earth Observation and Integrated Applications Day: Recent advances in Earth observation. - Mondorf Parc Hotel, Mondorf-les-Bains, Luxembourg
Duration: 13 Oct 202213 Oct 2022
Conference number: 5
https://www.list.lu/en/event/leo-day-2022/#anchor1

Conference

ConferenceLuxembourg Earth Observation and Integrated Applications Day
Abbreviated titleLEOday2022
Country/TerritoryLuxembourg
CityMondorf-les-Bains
Period13/10/2213/10/22
Internet address

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