Open data integration: from satellite to UAV for protection of built environment. The archaeological site in the Centa River bed in Albenga

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1 Open data integration: from satellite to UAV for protection of built environment. The archaeological site in the Centa River bed in Albenga L. Barazzetti a, R. Brumana a, B. Cuca a,b, M. Previtali a, R. Valente b a Politecnico di Milano, Department of Architecture, Built Environment and Construction Engineering, Via Ponzio 31, Milano, Italy b Cyprus University of Technology, Dept. of Civil Engineering and Geomatics, Saripolou str. 2-8, 3036 Limassol, Cyprus ADVANCES IN REMOTE SENSING FOR CULTURAL HERITAGE: FROM SITE DETECTION, TO DOCUMENTATION AND RISK MONITORING November 2015 ESA - ESRIN Frascati (Rome), Italy

2 Climate Change and World Heritage UNESCO reported several measures for a successful conservation and adaptation to change of cultural heritage: Preventive actions: monitoring, reporting and mitigation of climate change effects through environmentally sound choices and decisions at a range of levels: individual, community, institutional and corporate. Corrective actions: adaptation to the reality of climate change through global and regional strategies and local management plans. Sharing knowledge: including best practices, research, communication, public and political support, education and training, capacity building, networking, etc. Venice Sydney, Opera House Great Barrier Reef

3 When dealing with effects of climate change, it is more feasible and sustainable to think of heritage on a landscape scale and as a part of a larger (eco)-system Wider number of actors and competences are required GEO/GEOSS initiative The Gobal Earth Observation System of Systems Earth observation may help to: o illustrate the patterns of earth surface; o simulate past or future scenarios regarding larger portions of environment; o systematic monitoring of archaeological heritage; o new satellites with higher spectral and geometrical resolution (Copernicus/Sentinels) Earth Observations, Climate Change and World Heritage

4 The Centa river archaeological site in Albenga The archaeological site in Albenga is a wide and highly stratified area located inside the riverbed of the Centa, the main river of the Ligurian settlement, south of the historic town ALBENGA The first relevant findings inside the Centa riverbed date back to , found during an artificial expansion of the right bank, when ancient structures and the funerary area of San Clemente were unveiled Archaeological Site

5 Ancient morphology of Albenga coast line (ante XIII century) Main roman communication way and archaeological area in the Centa River

6 Archaeological area in the Centa River bed Roman funerary structures Roman waterpipe Roman thermal buildings San Clemente church Postmedieval mill XIX th century bridge remains

7 Data source avallabile Several data sources are required to study the area: High and medium resolution satellite images Hydrological network of the Centa Basin Risk maps High resolution orthophoto with UAV On-site measurements Each one with its own protocols, data format, CRS, etc. How we can integrate them all together?

8 15 Partners 6 EU Countries SME Research Centers Universities ENERGIC OD has received funding from the European Union ICT Policy Support Programme (ICT PSP) under the Competitiveness and Innovation Framework Programme (CIP), grant agreement n

9 Virtual HUB (VH) brokering approach ENERGIC OD make use of the brokering approach (Discovery and Access Broker - DAB) and the architecture SoSs (System of Systems) as developed in GEO/GEOSS (the Global Earth Observation System of Systems)

10 Virtual HUB (VH) brokering approach ENERGIC OD make use of the brokering approach (Discovery and Access Broker - DAB) and the architecture SoSs (System of Systems) as developed in GEO/GEOSS (the Global Earth Observation System of Systems) A new mediation level is introduced to accomplish mediation of geospatial data In this way the broker interconnect heterogeneous data sources exposing a single interface

11 Virtual HUB (VH) brokering approach A new mediation level is introduced to accomplish mediation of geospatial data Task to be accomplished: Connect heterogeneous data sources Data discovery Semantic consistency Data access => Interoperability among data sources Data harmonization

12 Virtual HUB (VH) brokering approach Discovery: Identify sources of geospatial data Connect Data sources at different level Implementation of mainly used discovery services Discovery based on specific criteria: Keywords, temporal and spatial constraints, etc.

13 Virtual HUB (VH) brokering approach Semantic: Multilingualism Allow the search of similar words (rainfall-precipitation) Multi-User profiles Cluster data based on taxonomies/ ontologies 13

14 Virtual HUB (VH) brokering approach Access: Implementation of mainly used access services Implementation of mainly used data formats Allow an homogeneous access to a set of heterogeneous sources

15 Virtual HUB (VH) brokering approach Transform: Data homogenization in terms of data resolution and sampling CRS transformation by using a WPS

16 Data source integration Data sources integrated for the Centa River: Satellite imges Risk maps Hydrological networks UAV orthophoto On-site measurements Integrated data are accessible within an online platform built on top of a brokering architecture system

17 On site data Laser scans and total station data coupled with GNSS A drone AscTec Falcon 8 was then used for the production of high resolution orthophotos

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20 Conclusions A new application for data retrieval based on the Virtual Hub brokering approach (GeoPan Atl@s) is at the fine-tuining stage by POLIMI The application was build upon the information deriving from different datasets, in particular those regarding high resolution satellite imagery, risk maps, hydrological maps but also historic cartography and terrestrial survey Geopan Atl@s allow a simplified approach for data search and collection, providing an efficient and innovative tool to both expert operators in the field of remote sensing, specialists in preservation and conservation policies, or other operators interested in monitoring, modelling and management of the environment and landscape in general The attempt of this experiment is to 1) stimulate a larger use of Open Data by both professional community and citizens and to 2) to contribute to a community based Web 2.0 by promoting an active engagement of participants in safeguard and maintenance of archaeo-landscapes, currently under the strong impact of the climate change effects.

21 THANK YOU! Open data integration: from satellite to UAV for protection of built environment. The archaeological site in the Centa River bed in Albenga L. Barazzetti a, R. Brumana a, B. Cuca a,b, M. Previtali a, R. Valente b a Politecnico di Milano, Department of Architecture, Built Environment and Construction Engineering, Via Ponzio 31, Milano, Italy b Cyprus University of Technology, Dept. of Civil Engineering and Geomatics, Saripolou str. 2-8, 3036 Limassol, Cyprus branka.cuca@polimi.it branka.cuca@cut.ac.cy