Smart city and cultural heritage: resilience trought crowdsourcing involvement

Nowadays cultural heritage faces many challenges which require the implementation of resilient policies: in fact, threats against cultural heritage may come not only from man-made hazards but also from natural ones (i.e. earthquakes in central Italy and sacks and devastation in Palmyra site by Daesh fighters). To preserve from damages those places, strong preventive actions have been started. Now the actual implementation is limited to digital materials comprising photos, videos and documents. The research proposes the use of crowdsourcing as instrument to build the database necessary to make 3D models of cultural assets at low costs and with a short development time. Crowdsourcing is the practice of obtaining needed services, ideas, or content by soliciting contributions from a large group of people. Thus, tourists and inhabitants can contribute in the preservation process of cultural assets increasing the resilience of cities.