FAQs about Laser Scanning
  • Absolute Surveying accuracy
  • Control over construction process
  • 3D Design- ability to combine high resolution imagery with 3D Models
  • High accuracy Orthoimages
  • Highly aesthetic presentation- high quality images
  • Web access to final product
  • XYZ has the ISO 9001-2008 Certification for “Specialized 3D Laser Scanning Documentation” from the Bureau Veritas
  • 22 years of experience and consistency on large scale Technical Projects
  • Because XYZ are the 3 Dimensions!

 

Laser Scanning is the latest surveying method for geometric documentation of buildings, architectural and archaeological studies, and large construction projects, such as road networks, tunnels, dams and other specialized technical projects.
Laser Scanners provide speed and simplicity for surveying the field. They capture the surface shape of objects, buildings and landscapes by measuring distance through a projected laser beam. The acquired data, or multitude of distance measurements, create the dense point cloud. Laser Scanning, or else Terrestrial LIDAR, has a range of 2 km in the field. The method is based on the dense acquisition of millions of points (1,000,000 points/sec), which together comprise a point cloud, consisting of unique points corresponding to XYZ coordinates in space. The high spatial density combined with real color make “virtual reality” a possibility.

With laser scanning, 3D is now a reality
- point clouds with 0.5 mm spatial density
- excellent scanning speed, up to 1 million points/sec
- absolute accuracy approaching 2mm
- completely automated
- complete and reliable documentation of the smallest details
- Real-time results, error control
- Material and reflectivity information
- Measurements can be conducted in any lighting conditions
- As Built 3D modeling
- 1:1 Scale without assumptions or generalizations

One of the basic steps of the documentation process using Laser Scanning is the post-processing stage. Because the scanner captures one million points each second, it is necessary to process this data using specialized software on high capacity PCs. The steps necessary include:
- Uploading the scan data from the laser scanner to the PC
- Importing the scan data into the point cloud processing software
- Point cloud registration and georeferencing (Relative and absolute orientation of scans using common targets)
- Noise reduction, sampling
- Meshing, smoothing, hole-filling
- 3D Modeling (parametric or other geometries)
- 2D drawings
- Exporting 3D models – 2D drawings

- Colored point clouds with 3D coordinates
- Horizontal/vertical sections and elevations
- 3D Digital Models/DTM/DSM
- Orthophotos - Surface developments
- Volume calculation for mining
- Profiling
- Surveying documentation (cross sections, sections)
- As built documentation
- Cloud Comparison, displacement monitoring
- Orthorectified facades of buildings and monuments
- Video tours
- Production of high quality 3D copies for twin constructions
- Geometric Documentation and correlation with a theoretic model

- Architectural Documentation/ Documentation of building facades.
- Documentation of geometrically complex structures- High accuracy surveying measurements
- Tunnel Documentation
- Mine and quarry documentation
- Documentation and monitoring of large construction projects (roads, bridges, nodes, dams, etc.)
- Cave documentation
- Complete documentation of archaeological sites and monuments
- Industrial applications/as built 3D Drawings, Industrial geodesy for structures in factories, or steel structures
- 3D Documentation of Ships
- Documentation of areas with difficult access
- Documentation of sensitive areas with high cultural value
- Direct and complete documentation of accident sites