Point Cloud Accuracy Calculator
This page is a placeholder for an upcoming icelabz point cloud accuracy calculator. The calculator is in production and will allow UK architects and BIM managers to:
- Enter the scanner type (terrestrial tripod, handheld SLAM, drone LiDAR, photogrammetry) and the application.
- Get the typical accuracy band for that combination.
- Compare the accuracy band to the RICS Measured Surveys standard and to the project's downstream use (planning, design development, construction, fabrication).
- Save the result to the project brief.
The full calculator will be added to this page when published. Until then, the page is marked as draft and excluded from the icelabz sitemap.
Point Cloud Accuracy Bands by Scanner Type and Application
The point cloud accuracy depends on the scanner type, the application, and the operating conditions. The four scanner types and their typical accuracy bands are terrestrial tripod scanner (typical accuracy plus or minus 2 to 5 mm at 10 m, plus or minus 5 to 10 mm at 50 m, and plus or minus 10 to 20 mm at 100 m, suitable for heritage measured surveys, high-accuracy design coordination, and as-built verification of complex geometry), handheld SLAM scanner (typical accuracy plus or minus 10 to 20 mm at 10 m, suitable for occupied interiors, walk-through surveys, and as-built capture of buildings and infrastructure where tripod access is not practical), drone LiDAR (typical accuracy plus or minus 20 to 50 mm at typical flight height, suitable for large sites, infrastructure corridors, and inaccessible terrain where ground-based scanning is not practical), and photogrammetry (typical accuracy plus or minus 20 to 50 mm depending on the camera, lens, and processing workflow, suitable for visualisations, marketing materials, and as-built capture where accuracy is not the primary concern). The four typical applications and their required accuracy bands are planning (typical accuracy plus or minus 50 mm or wider is sufficient for the site plan, location plan, and existing building drawings; any of the four scanner types is suitable), design development (typical accuracy plus or minus 5 to 20 mm is required for the design coordination; terrestrial tripod or handheld SLAM is recommended), construction (typical accuracy plus or minus 5 to 10 mm is required for the setting out, the as-built verification, and the M&E coordination; terrestrial tripod is recommended), and fabrication (typical accuracy plus or minus 2 to 5 mm is required for fabrication-grade detail; terrestrial tripod with high-density scanning is required, with target-based registration to verify the accuracy). To commission a point cloud survey, send a brief covering the property address, the floors and areas in scope, the application and the required accuracy band, the deliverable list (raw E57 or LAS point cloud, registered and cleaned point cloud, registered cloud aligned to a chosen coordinate system, 2D CAD plans and elevations derived from the cloud, Revit or IFC BIM model at LOD 200 to 400 depending on the downstream use), the deliverable format (E57, LAS, RCP, DWG, RVT, IFC), the coordinate system (OS National Grid with Ordnance Datum Newlyn heights is the UK convention), and the target turnaround. icelabz responds with a fixed-fee quote within twenty-four hours. The full calculator will be added to this page when published. Until then, the page is marked as draft and excluded from the icelabz sitemap.