1 research outputs found
Cyclododecane as opcifier for digitalization of archaeological glass
[EN] This paper faces the problem of acquiring archaeological artifacts using triangulation based 3D laser
scanners and focusing on reflective/refractive surfaces. This kind of artifacts are mostly made of glass
or polished metal, and the properties of their surfaces violate most of the fundamental assumptions
made by vision algorithms. Also, the unique and fragile nature of archaeological artifacts adds an extra
constraint to the acquisition process: the use of industrial whitening sprays has to be avoided, due to
the physicochemical processes required to clean the surface after scanning and because the chemical
properties of these sprays may damage the original object. As an alternative to them, a new way to use
a common conservation material is proposed: the use of cyclododecane as a whitening spray. Thanks to
its chemical stability and to the fact that it sublimes at room temperature, together with its good filmforming
capabilities, a set of evaluation tests is presented to prove thatthe error introduced by the opaque
thin layer created on the surface of the artifact is smaller than the accuracy of the 3D scanner and, thus,
no acquisition errors are introduced. A comparison with general-purpose industrial whitening sprays is
also presented, and achieved results show no significant differences in the quality of the resulting 3D
models.This work is supported by the "Programa de Ayudas de Investigacion y Desarrollo (PAID)" of the Universitat Politecnica de Valencia and the "Plan Nacional de I+D+i 2008-2011" from the Ministerio de Economia y Competitividad of Spain, Projects ID: HAR2012-38391-C02-01 and HAR2012-38391-C02-02.Díaz Marín, MDC.; Aura Castro, E.; Sánchez Belenguer, C.; Vendrell Vidal, E. (2016). Cyclododecane as opcifier for digitalization of archaeological glass. Journal of Cultural Heritage. 17:131-140. https://doi.org/10.1016/j.culher.2015.06.003S1311401