id
	12092
Url
	https://chloe.cnr.it/s/BiDiAr/item/12092
Resource template
	Conference Paper
Resource class
	fabio:ConferencePaper
Title
	Photometric stereo 3D visualizations of rock-art panels, bas-reliefs, and graffiti
Creator
	Vanzi, Massimo
	Bagnoli, Paolo Emilio
	Mannu, Carla
	Rodriguez, Giuseppe
Publisher
	Archaeopress
Date
	2016
Language
	eng
Abstract
	For small-scale cultural subjects, such as rock engravings, graffiti and bas-reliefs, 3D rendering may be realized by applying the photometric stereo consolidate method, instead of complex and expensive laser-scanning equipments. It is a cheap, portable, and easily implementable technique generally used in quality controls within manufacturing industrial environments or in robotic vision. Its main advantage is the use of common digital photography with portable flash lighting and dedicated software for data elaboration. Furthermore, it provides as output data, in addition to the morphological information of the objects, the map of brightness and surface colours (albedo), which allows the user correctly to identify the frescoes and paintings without distortions caused by shadows or other morphological detail. This paper deals with the theoretical fundamentals of the photometric stereo method for 3D rendering of surfaces, its practical implementation, and the mathematical strategies to obtain both the morphological data and the albedo functions. Some examples of applications on rock-art and other artefacts are presented and discussed.
Is Part Of
	CAA2015. Keep the Revolution Going, Proceedings of the 43rd Annual Conference on Computer Application (Siena 2015)
Spatial Coverage
	Oxford
Cited by
	11056
Editor
	Campana, Stefano
	Scopigno, Roberto
	Carpentiero, Gabriella
	Cirillo, Marianna
Isbn
	978-1-78491-337-3
Pages
	1059 - 1065
Uri
	https://iris.unica.it/handle/11584/330872?mode=full.1272
Homepage
	https://www.zotero.org/groups/5293298/bidiar/items/PD7MYZ9L/item-list

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