What are the point cloud survey techniques?
To carry out any building project one of the fundamental phases is that of the reliefs, especially if you work with BIM methodology. The point cloud allows you to create a digital model of the building, let's see what they are survey techniques to obtain it with a focus on the most advanced ones.
What is Point Cloud?
There point cloud is the result of the survey, a file viewable through specific software that contains the information about the scanned object, such as size, position, materials used, color, etc.
The point cloud allows you to:
- Make a BIM model of the building;
- Get a mesh model from the union of the points;
- Put to comparison different models;
- Do measurements directly on the digital model.
Modern surveying techniques to obtain a point cloud
Among the techniques for point cloud detection we find:
- There photogrammetry, which obtains building data through the use of photos and images;
- The use of drones, which allow for realistic and precise photogrammetry from above;
- The laser scanner, a fixed scanner that obtains data about the building by emitting laser beams.
In addition to these, one of the most advanced techniques for obtaining the point cloud is that of laser scanner with SLAM technology, which unlike the classic laser scanner allows you to scan even on the move, both manually and with the support of drones or vehicles.
With this technology, in fact, it is not necessary to fix specific points to carry out the scans, but it is the scanner that locates itself in space, speeding up times even in very large spaces.
The Evolution of Scanning to BIM
As we mentioned, the point cloud allows you to create the BIM model of the building or scanned object, that is, obtaining a 3D model that is not a simple drawing, but a model rich in information and data regarding the building/object.
Thanks to technological evolution today the data contained in the BIM model obtained from the point cloud are related not only to the position, but also to materials used, according to the type of components used (windows, doors, etc.) and also to stages of the building's life, from its design to its dismantling.
This offers a Project overview, more complete and with a reduced margin of error both in the design phase and on site, as well as in the maintenance phases.
The scan to BIM It is especially essential when it comes to building restorations historians and in the creation of Digital Twin, a digital replica of the building that combines the BIM or 3D model of the structure with the building itself, in which IoT systems are installed.
How Overplan studio can help you
Overplan studio always has at his disposal up-to-date instruments equipped with the latest technologies.
Our multidisciplinary team, characterized by a range of professional figures specialized in the sector, competent and able to satisfy every need, offers customers the maximum support and a professional and complete service, from data collection to point cloud processing.
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