Geo-Info Ltd. - Specialist Surveyors

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3D Laser Scanning

Laser Scanning is used to capture a physical object's exact size and shape in order to represent it in 3 dimensions. It is a non intrusive technology, which uses a line of laser lights to quickly and efficiently generate highly accurate point clouds.

A basic workflow chart for 3D laser scanning at Geo-Info includes:

  1. Field Data Capture
  2. Data Import and Inspection
  3. Data Registration
  4. Data Organization and Clean up
  5. Creating Deliverables
  6. Data Export

3D laser scanning is suited to the measurement and inspection of contoured surfaces and complex geometries where it is impractical to use traditional surveying methods or a touch probe.

Advantages:

Deliverables

The entire surface shape of the object is represented by a series of points collected by the laser scanner called point clouds. These are registered and merged into a single 3D representation of the object before they can be post-processed. Various software packages can be used for processing depending on a specific application for the data and clients requirements. A 3D model can be produced.

Points to note

When laser scanning it is important to note that some surfaces are less favourable than others. These include:

Weather can also have an effect on laser scanning data with rain, snow or fog causing poor measurements and surfaces that are directly illuminated by the sun increasing the noise range.

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