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Advances in Optical Technologies
Volume 2012 (2012), Article ID 512902, 6 pages
http://dx.doi.org/10.1155/2012/512902
Research Article

Remote Colorimetric and Structural Diagnosis by RGB-ITR Color Laser Scanner Prototype

ENEA, Via E. Fermi 45, Frascati 00044 (Roma), Italy

Received 19 December 2011; Accepted 31 January 2012

Academic Editor: Joseph Rosen

Copyright © 2012 Massimiliano Guarneri et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Since several years ENEA's Artificial Vision laboratory is involved in electrooptics systems development. In the last period the efforts are concentrated on cultural heritage remote diagnosis, trying to develop instruments suitable for multiple purposes concerning restoration, cataloguing, and education. Since last five years a new 3D (three-dimensional) laser scanner prototype (RGB-ITR) based on three amplitude-modulated monochromatic laser sources mixed together by dichroic filters is under development. Five pieces of information per each sampled point (pixel) are collected by three avalanche photodiodes and dedicated electronics: two distances and three target reflectivity signals for each channel, red, green, and blue. The combination of these pieces of information opens new scenarios for remote colorimetry allowing diagnoses without the use of scaffolds. Results concerning the use of RGB-ITR as colorimeter are presented.