Accuracy evaluation of smartphone-based videogrammetry for cultural heritage documentation process
29TH CIPA SYMPOSIUM DOCUMENTING, UNDERSTANDING, PRESERVING CULTURAL HERITAGE. HUMANITIES AND DIGITAL TECHNOLOGIES FOR SHAPING THE FUTURE, VOL. 48-M-2(2023)
Abstract
The last decade has seen the development of a growing tendency to use the most modern technologies, in the field of Cultural Heritage, with the aim of digitizing and facilitating protection and conservation activities. Much research has focused on the development of innovative methods such as photogrammetry or Terrestrial Laser Scanners, in terms of reliability, precision, time and costs. In this research, however, the use of the smartphone was investigated by comparing the point clouds obtained via videogrammetry from smartphones, with those generated by different digital survey techniques, such as Terrestrial Laser Scanners and photogrammetry via SLR camera. Specifically, a smartphone was used and the comparison between point clouds was conducted based on four criteria: point clouds fitting, density evaluation, profiling and texture quality with the aim, therefore, of verifying the geometric reliability of the data and the quality of polygonal lines and the mesh/texture derived. The case study selected was the sepulchral monument of the Pascopepe Lambertini family (14th century), located in the Crypt of Santa Maria della Scala, the Cathedral of Trani (South of Italy). Finally, the research demonstrates how this methodology, in the documentation of heritage, allows for even greater portability and accessibility compared to other methodologies, maintaining widely acceptable standards of accuracy and therefore going to constitute a valid alternative in the documentation of historical heritage.
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Key words
Photogrammetry,Videogrammetry,Terrestrial Laser Scanner (TLS),Accuracy,3D Model,Cultural Heritage
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