VIDEOR

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What is VIDEOR?

VIDEOR is a service based on the use of remote sensing satellite data, for the analysis and monitoring of risks threatening the Cultural Heritage.

Intended audience

VIDEOR is addressed to Public Entities responsible of the safeguard of cultural assets located in the territory within their competence.

What is the use?

VIDEOR is thought for the detection, monitoring and evaluation of natural and anthropic phenomena potentially damaging the Cultural Heritage.


VIDEOR is the first example of a continuous monitoring service realized by means of data coming from several sources, such as satellite, drones and on site sensors, updatable, accessible via web and finalized to Cultural Heritage safeguard. VIDEOR is aimed at Institutions (Superintendence, Municipalities, and Regions) responsible for cultural heritage conservation, maintenance and restoration.

To these institutions, VIDEOR proposes a set of services and products as basis for risk evaluation in terms of loss and/or damage.

VIDEOR service supports the Carta del Rischio system, a geographic information system developed and managed by the Italian Institute for Conservation and Restoration (ISCR) for the scientific/administrative support to authorities responsible for cultural heritage protection and for the aware of the potential harm which the immovable property is submitted to.

VIDEOR service contributes to the development of a deeper evaluation of risk factors both in terms of hazard estimation and in terms of local detailed study of cultural assets already surveyed by ISCR in the Carta del Rischio system. These results are evaluated and validate by ISCR experts.

Immagine

Figure: multitemporal optical analysis (optical images) inside Villa Adriana archaeological site. New excavations between 2000 and 2015 are clearly visible.


How it works: VIDEOR periodically performs satellite remote sensing analyses, using both optical and radar data, with the aim to identify, through sophisticated multitemporal analyses, potential critical situations of cultural assets under observation.

Update period modulated according to criticalities detected on the observed area. Periodicity can vary from quarterly to monthly periods (by satellites), until a real-time scale (by drones and sensors in situ).

Territorial scale varies form a wide scale of several km2 (satellites), to a detailed scale (drones and sensors in situ).

Each situation classified as “anomalous” by VIDEOR will be conveniently evaluated by ISCR experts.


On the base of the three domains identified by the Carta del Rischio methodology (anthropic, static-structural and environmental-air), VIDEOR guarantees the following services:

  1. Human activities constant monitoring and analysis of over the area of interest, though the use of optical data, from which the following thematic maps will be generated:
    1. Soil coverage: for the identification of changes performed by men;
    2. Changes happened inside and/or in the surroundings of the cultural site;
    3. Anthropic pressure index, in order to quantify the phenomenon of anthropic pressure;
    4. Spontaneous vegetation diffusion, in order to understand the state of degradation/abandon of the site.
  2. Static-structural monitoring using radar data for the analysis of soil/structures deformation, such as landslides and subsidence (lowering movements of the earth’s surface).
  3. Data integration with aerial data obtained using multispectral sensors (12 bands) equipped on UAV (Unmanned Aerial Vehicles). These data are acquired in the case satellite analysis detects anomalies for which a deeper analysis is necessary by means of data with higher spatial resolution.

Immagine2

Figure: structures movements inside Villa Adriana archaeological site were estimated by means of PS technique (radar). In the zoom, measure points revealed above monuments are visible and show structures stability.

The availability of free data (Sentinel-1 and Sentinel-2) and the agreement in place today for the free use of COSMO-SkyMed data by the National Institutions, together with the availability of historic series (Landsat, ERS/ENVISAT) allow both a lowering of service costs and the possibility of knowing the previous conditions of health of a cultural asset. This enables the assessment of cultural asset current conditions, so that the future trend can be derived.

Originality of VIDEOR web service is related to (i) data processing carried out systematically and regularly on sites of interest, to (ii) sharing of information among cultural field experts and to (iii) the dissemination of information among citizens about the status of health of cultural assets. Multiple simultaneous accesses to VIDEOR portal will be possible to work and to share geospatial information at the same time.

Advantages

  • Frequent monitoring over wide areas at a low cost:
    • Coverage from a few hundred to several tens of thousands km2 per image;
    • Possibility of daily acquisitions over the same area, according to the satellite.
  • Capabilities of monitoring even with a cloud coverage, or lack of sun lighting (radar).
  • Uniform and periodic coverage throughout the territory. This allows a monitoring even in areas difficult to be reached overland – e.g. slopes subject to landslides and mountain chain.
  • Elevated number of measure points (soil movements’ estimation, meteorological/climatic and pollutants estimation).
  • Use of archived data starting from 1984, thanks to the availability of results coming from previous missions, such as LANDSAT, ERS, ENVISAT, etc. These data allow historic analysis and the possibility to obtain a better comprehension of the observed phenomena, analysis not achievable by means of traditional techniques.

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