Deterioration mapping of façades may be a challenging task in historical urban contexts, often characterized by narrow streets and tall buildings. In these situations, the application of Terrestrial Laser Scanning or Terrestrial Photogrammetry does not provide satisfactory results. Furthermore, the use of Unmanned Aerial Vehicles, the so-called “drones”, is generally forbidden in crowded places for safety reasons unless they are lighter than a weight imposed by the regulations in force in each country. This article presents the application of a very small and ultra-lightweight drone (less than 300 g) equipped with a low-cost camera, particularly suitable for operating in very narrow spaces. A close range photogrammetric survey performed to analyze a huge historical building façade in Bologna (Italy) pointed out a good accuracy level, confirmed by the validation of the results carried out by a 3D laser scanner survey. Moreover, a map of the degradation has been realized to support further restoration analysis, demonstrating that this low-cost, fast, and easy-to-use survey technique can be applied to other similar urban contexts at the same time.

Modeling and deterioration mapping of façades in historical urban context by close-range ultra-lightweight UAVs photogrammetry / Russo, Michele; Carnevali, Laura; Russo, Valentina; Savastano, Davide; Taddia, Yuri. - In: INTERNATIONAL JOURNAL OF ARCHITECTURAL HERITAGE. - ISSN 1558-3066. - ELETTRONICO. - (2018), pp. 1-20. [10.1080/15583058.2018.1440030]

Modeling and deterioration mapping of façades in historical urban context by close-range ultra-lightweight UAVs photogrammetry

Michele Russo
;
Laura Carnevali;
2018

Abstract

Deterioration mapping of façades may be a challenging task in historical urban contexts, often characterized by narrow streets and tall buildings. In these situations, the application of Terrestrial Laser Scanning or Terrestrial Photogrammetry does not provide satisfactory results. Furthermore, the use of Unmanned Aerial Vehicles, the so-called “drones”, is generally forbidden in crowded places for safety reasons unless they are lighter than a weight imposed by the regulations in force in each country. This article presents the application of a very small and ultra-lightweight drone (less than 300 g) equipped with a low-cost camera, particularly suitable for operating in very narrow spaces. A close range photogrammetric survey performed to analyze a huge historical building façade in Bologna (Italy) pointed out a good accuracy level, confirmed by the validation of the results carried out by a 3D laser scanner survey. Moreover, a map of the degradation has been realized to support further restoration analysis, demonstrating that this low-cost, fast, and easy-to-use survey technique can be applied to other similar urban contexts at the same time.
2018
3D laser scanning; deterioration mapping; digital photogrammetry; ortho-mosaic; ultra-lightweight UAV; urban are; urban façade
01 Pubblicazione su rivista::01a Articolo in rivista
Modeling and deterioration mapping of façades in historical urban context by close-range ultra-lightweight UAVs photogrammetry / Russo, Michele; Carnevali, Laura; Russo, Valentina; Savastano, Davide; Taddia, Yuri. - In: INTERNATIONAL JOURNAL OF ARCHITECTURAL HERITAGE. - ISSN 1558-3066. - ELETTRONICO. - (2018), pp. 1-20. [10.1080/15583058.2018.1440030]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1081773
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