GEOmedia

Interviste ad alcuni responsabili di IDT regionali: presente e prospettive

2022-01-15T12:08:40+01:00

GEOmedia interviews Gian Bartolomeo Siletto, geologist, official representative for the Spatial Data Infrastructure (IDT) of Regione Piemonte.

Conversation with Umberto Trivelloni, Head of the IDT of the Veneto Region, Delio Brentan, P.M. for the IT part of the IDT, and Andrea Semenzato Analyst GIS Engineering Ingegneria Informatica S.p.A

L’“Urban Digital Twin”, l’Incertezza e l’Osservazione della Terra: il Programma europeo Copernicus

2022-01-14T12:03:35+01:00

The "digital twins" applied to cities and territories -as well as to their inhabitants- are already a reality and also at our disposal
for the future. Therefore, being creators and/or beneficiaries of these artifacts, we all must learn to live with them. In fact, the
increasing complexity of our living conditions and of the knowledge and technologies needed and used to deal with it, requires
us to consider uncertainty unavoidable. We have to be aware of it and relate to it responsibly, particularly when we make use of
the impressive amount of information that Earth Observation programs, such as Copernicus, produce and make available to us.

Oltre le SDI: quali prospettive

2022-01-15T11:59:16+01:00

The SDI concept was introduced in the early 90s: today is underway, globally, a debate on its future.

Rilievo digitale di aree urbane

2022-01-15T12:17:16+01:00

For some years we have been hearing about “Smart Cities”, and this concept is rapidly evolving towards that of a digital twin that can support the modification, construction and evolution of the city. In order to develope this model we need a computer support suitable for simulation: the “mobile vehicle laserscanner” is today the technology that best suits this type of application, since it allows the survey through spherical photographic sensors and lidar of millions of points per second, resulting among the most suitable means for the massive mapping of the city. With this technology it is possible to
acquire geospatial information from the ground at a scale suitable for most of the needs of urban applications at speeds typical of urban traffic, as has been highlighted by the survey carried out by GRS for the Municipality of Rome. GRS is an engineering, geodesy and nondestructive investigation technology company based in Rome, which has been employing laserscanner technology since the dawn of this technology.

In the case study examined, the survey was carried out by means of the high-performance and latest-generation Riegl VMQ-1HA mobile laserscanner system, equipped with a Ladybug 5+ camera for the generation of panoramic photos
and the coloring of the point cloud.
The survey was carried out in 3 characteristic districts of the city of Rome, namely some main streets of Testaccio, Trastevere and EUR and generated a cloud of points with an extension of about 30,000 square meters with a road development of about 1.4 km, for a significant time of about three hours.
Once the acquisition is completed, carried out at a speed similar to that of vehicular traffic, the individual clouds acquired by the instrument are processed on a PC, using the instrument's return software, such as Riegl RiPROCESS.
In the following we experimented with different ways of returning the cloud, for example through the Orbit 3DM Feature Extraction software, which thanks to its ability to automatically and semi-automatically classification, it recognize the objects of which the point cloud is composed. For this reason it was possible to create a specific database for each category of
two- or three-dimensional object.
The laser survey and the subsequent stacking of what is physically present is the founding pillar for any development of digital-twin and ultimately of smart city. The integration of the different new generation technologies will help the offices in charge in carrying out the best choices both in terms of safety for the city, and in terms of traffic management and any type of
emergency.

Integrazione di un sensore Sentera 6X a bordo di un drone Phantom 4. Una sperimentazione in campo archeologico

2022-01-15T12:49:36+01:00

This paper deals with a research carried out since 2020 by Sapienza - University of Rome that test the analysis of the data acquired by a multispectral camera transported by a UAV and their reading and interpretation in the context of the archaeological diagnostics.
As part of the activities, the integration of a Sentera 6X sensor on board a DJI Phantom 4 drone was tested, both from a mechanical and software data management point of view, from the programming, to the acquisition, up to the final processing and extraction of vegetation indices.
The SAPR is highly performing as well as very agile use in the specific contexts of research and has returned satisfactory results in the data extraction and processing phase.

Sistemi di posizionamento, navigazione e sincronizzazione alternativi ai gnss

2022-01-15T12:54:06+01:00

Nonostante il pervasivo e fondamentale ruolo dei sistemi globali di navigazione via satellite (“Global Navigation Satellite Systems, GNSSs”) in praticamente tutte le infrastrutture economiche ed industriali della nostra società, cresce la preoccupazione per la troppa dipendenza da sistemi altamente affidabili, ma al contempo anche intrinsecamente vulnerabili.

Da IDT e INSPIRE alle DIGITAL TWIN

2022-01-14T11:41:55+01:00