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Journal of Electronic Imaging

Container weld identification using portable laser scanners
Author(s): Pierluigi Taddei; Gunnar Boström; David Puig; Victor Kravtchenko; Vítor Sequeira
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Paper Abstract

Identification and integrity verification of sealed containers for security applications can be obtained by employing noninvasive portable optical systems. We present a portable laser range imaging system capable of identifying welds, a byproduct of a container’s physical sealing, with micrometer accuracy. It is based on the assumption that each weld has a unique three-dimensional (3-D) structure which cannot be copied or forged. We process the 3-D surface to generate a normalized depth map which is invariant to mechanical alignment errors and that is used to build compact signatures representing the weld. A weld is identified by performing cross correlations of its signature against a set of known signatures. The system has been tested on realistic datasets, containing hundreds of welds, yielding no false positives or false negatives and thus showing the robustness of the system and the validity of the chosen signature.

Paper Details

Date Published: 6 March 2015
PDF: 11 pages
J. Electron. Imag. 24(2) 023005 doi: 10.1117/1.JEI.24.2.023005
Published in: Journal of Electronic Imaging Volume 24, Issue 2
Show Author Affiliations
Pierluigi Taddei, European Commission (Italy)
Gunnar Boström, European Commission (Italy)
David Puig, European Commission (Italy)
Victor Kravtchenko, International Atomic Energy Agency (Austria)
Vítor Sequeira, European Commission (Italy)

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