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The roofs of Genoa, or any city for that matter, are under-utilized urban spaces with great potential, Source: Depositphotos
This method provides a closer and more intimate look than satellite imaging, thus creating a map that can aid optimal urban planning
The City of Genoa announced at the end of last week that it would be the first in Italy to apply multispectral aerial remote sensing to create a detailed map of its urban assets, such as roofs. This will be done with a view to optimising energy development in the Ligurian capital as the technique can aid to see how well energy is produced or wasted in specific areas or buildings.
The multi-partner project is a collaboration between the municipal authorities, City Green Light (which has been managing the public lighting service since 2020, and the tech company WeSii, a leader on the European scene in the sector of aerial remote sensing.
Optimizing urban surfaces for the purpose of sustainable living is all the craze these days and even though when we think of urban spaces we often forget the city’s roofs – they’re in fact a big part of the solution. But that’s not all.
The Genoese councillor for the environment Matteo Campora puts it the following way: “Thanks to the collaboration, a tool will be created to understand and manage the territory, providing concrete support for the transition towards the increasingly integrated model of the Smart City. Remote sensing will serve a wide range of applications ranging from roof mapping for the installation of photovoltaic panels, to the identification of elements that define road risk factors, to light points and traffic lights, but also pedestrian crossings, intersections and other urban elements.”
The activity involves aircraft surveying of the entire municipal area of 245 square km with ground resolutions typical of drone surveys (4 cm/px), extended over the entire municipal area and with wavelengths belonging both to the visible and invisible (thermal infrared).
The result is data with a high degree of detail, accuracy and high information potential that can be used both to increase and update the level of knowledge of the territory and to guide strategic decisions in the area of municipal sustainability.
The degree of technological innovation is made possible by the skills fielded by City Green Light and WeSii in the field of image processing, artificial intelligence and machine learning, which allow for the automatic classification of any object recognizable at these resolutions and in the different lengths wave.
This means that the system will be able to look at the city from above and classify the things it “sees” under different relevant categories. These could be heat islands or even the concentration of fine particles.
As for the roofs, and apparently, there are about 50,000 of these in Genoa, remote aerial sensing can inspect their potential to host solar panels by analyzing their shadows, slope and sun exposure. That itself can ease the creation of self-sufficient energy communities in the city.
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