Detection and Classification of Crack for Heritage Building

Detection, and classification of cracks in buildings are vital to prevent damage and their sudden collapse. This is particularly important to preserve our cultural heritage and save human life. Nowadays, trained operators perform these operations. Consequently, the number of buildings under monitoring is too low and costs are high. Besides the fact that the accuracy and as a consequence the reliability of the inspection results depend on the human operator expertise. For this reason, literature has proposed the implementation of distributed monitoring systems that automatically detect and classify cracks. In this paper, a critical overview of the existent systems and research activities is presented by stressing the metrological challenges.