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MicroGeo had the opportunity to experiment with the ZEB Horizon instrument to acquire a piezometric well in 3D. The scenario is not the easiest to detect. This type of wells, in fact, extends in depth for several tens of meters and with traditional scanning systems it is practically impossible to obtain a complete 3D acquisition of the subject. With the ZEB Horizon Mobile Mapping System it was possible to acquire the well. The subject presents itself as a 30 m deep piezometric well with a diameter of 3.6 m, with a high difficulty of acquisition: the extremely regular surfaces of the well have made the survey activity with the SLAM technique very complex, the algorithm that generates the 3D point cloud model must be extremely powerful in order to be able to generate a correct data even in a condition of extreme surface homogeneity.

MMS is nowadays an emerging technology, whose development goes back to the 90’s and is constantly growing. From a technological point of view, it is the best example of sensor integration and cost-effective acquisition of geo-referenced spatial data, with a combination of digital imaging devices, long-range laser scanners and GNSS/IMU positioning sensors. The accuracy requirements for the acquired data is substantially different in each application, with road or rail infrastructure surveying being much more demanding in this particular respect. Thus, every scanner specification should be taken into account in order to obtain the best solution according to the intended application. Additionally, a proper evaluation procedure should be carried out by adopting external reference datasets. In this work, a review of the MMS technology is given, together with results achieved with RIEGL VMX-450 in the city center of Trento.

L’Università Iuav di Venezia ha testato sul Canal Grande le più innovative tecniche di rilevamento, in collaborazione con Riegl e Microgeo, realizzando la scansione di tutti i prospetti attraverso un sistema di acquisizione integrato da natante. The Grand Canal in Venice by boat 3d laser scanning The Iuav University in Venice realized a test on the Canal Grande with the most advanced detection techniques, in col-laboration with Riegl and Microgeo, making the laser scanning of all the elevation through an acquisition system integrated on a ship.

Flyscan: una novità italiana nel campo della scansione per applicazioni fotogrammetriche

Valutazione comparativa di un sistema ibrido basato su fotogrammetria e Laser Scanner per la rappresentazione architettonica