Pubblicazioni

A Practical Reflectance Transformation Imaging Pipeline for Surface Characterization in Cultural Heritage  (2016)

Autori:
Ciortan, Irina Mihaela; Pintus, Ruggero; Marchioro, Giacomo; Daffara, Claudia; Giachetti, Andrea; Gobbetti, Enrico
Titolo:
A Practical Reflectance Transformation Imaging Pipeline for Surface Characterization in Cultural Heritage
Anno:
2016
Tipologia prodotto:
Contributo in atti di convegno
Tipologia ANVUR:
Contributo in Atti di convegno
Lingua:
Inglese
Formato:
Elettronico
Titolo del Convegno:
Eurographics Workshop on Graphics and Cultural Heritage
Luogo:
Genova
Periodo:
October 5-7 2016
Casa editrice:
The Eurographics Association
ISBN:
978-3-03868-011-6
Intervallo pagine:
127-136
Parole chiave:
RTI, Reflectance, Microprofilometer
Breve descrizione dei contenuti:
We present a practical acquisition and processing pipeline to characterize the surface structure of cultural heritage objects. Using a free-form Reflectance Transformation Imaging (RTI) approach, we acquire multiple digital photographs of the stud- ied object shot from a stationary camera. In each photograph, a light is freely positioned around the object in order to cover a wide variety of illumination directions. Multiple reflective spheres and white Lambertian surfaces are added to the scene to automatically recover light positions and to compensate for non-uniform illumination. An estimation of geometry and re- flectance parameters (e.g., albedo, normals, polynomial texture maps coefficients) is then performed to locally characterize surface properties. The resulting object description is stable and representative enough of surface features to reliably provide a characterization of measured surfaces. We validate our approach by comparing RTI-acquired data with data acquired with a high-resolution microprofilometer.
Pagina Web:
https://diglib.eg.org/handle/10.2312/gch20161396
Id prodotto:
93396
Handle IRIS:
11562/949893
depositato il:
7 ottobre 2016
ultima modifica:
2 novembre 2016
Citazione bibliografica:
Ciortan, Irina Mihaela; Pintus, Ruggero; Marchioro, Giacomo; Daffara, Claudia; Giachetti, Andrea; Gobbetti, Enrico, A Practical Reflectance Transformation Imaging Pipeline for Surface Characterization in Cultural Heritage  in Eurographics Workshop on Graphics and Cultural HeritageThe Eurographics AssociationAtti di "Eurographics Workshop on Graphics and Cultural Heritage" , Genova , October 5-7 2016 , 2016pp. 127-136

Consulta la scheda completa presente nel repository istituzionale della Ricerca di Ateneo IRIS

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