New crack measurement methodology. Tag recognition
In this paper, a new methodology for measuring
the cracking for the Structural Health Monitoring
(SHM) of cultural heritage, is presented. This
methodology is characterized by being minimally invasive
on the artifact to preserve, which is one of the main
qualities required in this field. The approach used is
to determine the relative distance between two optical
tags, using advanced fitting algorithms for the objective
function. In this work, we have taken into account
different objective-function kinds, in order to find the
best configuration to determine the fitting parameters,
useful to the SHM. In order to validate the fitting algorithms,
some measurements evaluated on simulated
tags are presented. Moreover, to validate the methodology,
some real measurements are shown.