Our technologically advanced equipment, together with specific skills and an interdisciplinary approach, allows us to produce 3D datasets (Digital Twins) with exceptional detail, unthinkable until just a few years ago. Our entirely in-house developed workflow allows us full control of all production phases, and unparalleled quality and competitiveness.
Image acquisition
Once the boundaries of the area have been defined, the flight plan is studied based on the specific requests and the morphological characteristics of the territory. The photogrammetric survey is carried out using a Partenavia P68 Twin-engine aircraft on which a system of oblique aerophotogrammetric cameras Vexcel Osprey 4.1 PREMIUM is mounted. This system allows the record of the entire surveyed territory even at 45° from the 4 cardinal directions, providing a complete view that allows the client to clearly see all the facades and vertical elements present in the area.
On board, the pilot and the specialized operator handle all phases of the flight guided by the UltraNav7 navigation system which is also responsible for taking the frames in succession exactly as defined in the flight plan. UltraNav also records with very high precision the positioning and orientation data of each individual frame. These data are technically called External Orientation (EO) and contains several data such as coordinates of the camera center, altitude, Omega, Phi and Kappa inclination angles.
The quality with which the survey is carried out is fundamental to obtain a particularly precise 3D model.
Post processing raw data
The Raw files provided by the photogrammetric camera, together with the position and orientation data of the camera at the time of shooting, are post-processed using the Ultramap camera software. During data processing, a quality control of the data produced during the flight is carried out, followed by color balancing and radiometric adjustment. The obtained image files are georeferenced with good accuracy and are ready to be consulted directly or used to process products such as Cartography, Orthophoto, DTM, DSM or Digital Twins.
Aerotriangulation
Aerotriangulation (AT) allows you to determine the XYZ coordinates of every pixel visible in the images
The calculation takes place in a rigorous way and particular attention must be paid to reliability and precision. The software uses modern tools and cutting-edge algorithms which, combined with the use of RAW/Unbiased data, allow the generation of a completely automatic Tie Point Collection in which the user is guided in the control and optimization of the AT.
Once a first calculation has been completed, the Ground Control Points (GCPs) are imported and are automatically positioned by the software in the 3D space of the project. By checking and correcting their position on the images with high precision, the External Orientation (EO) values are obtained.
This is one of the most sensitive phases of the workflow where simple mistakes can negatively influence the precision of subsequent processing.
Mesh processing
To complete the 3D processing, the software performs the dense matching operation and through photogrammetry techniques it assigns a position in space to each pixel of the image. This generates a digital surface model called DSM (Digital Surface Model) georeferenced in the defined coordinate system.
The DSM is a virtual and faithful reconstruction, in real scale, of the surveyed territory; this allows us to produce a 3D mesh called TIN (Triangulated Irregular Network) and, on it, portions of the original digital images are re-projected, choosed based on the angle of incidence of the reconstructed solid face.
The texturized 3D mesh thus obtained is dimensionally correct, accurate and graphically realistic. The mesh of the surveyed territory is divided into smaller portions called tiles.
Visualization system
City Explorer 3D is the Aeronike brand that contains our vertical software solutions implementing specific requests on 3D models. All this on a web browser in realtime, combining high quality and very fast loading times, even on mobile.
- TOURISM
ENHANCED TRAVEL EXPERIENCES - SMART CITY 3D
ENVIRONMENT - SECURITY
EVERYTHING AT A GLANCE - REAL ESTATE