Hobart, Tasmania · from the north-east, classified: ground, vegetation and buildings · Showcase
Processing
Quality assurance
Independent checks of any provider's LiDAR against its specification, before you accept it or build on it.
We check delivered LiDAR against the specification it was bought to: point density, swath overlap and repeatability, classification quality and vertical accuracy against independent control, under ICSM v2.0 (Australia), LINZ (New Zealand) or USGS / ASPRS (United States) requirements.
Where other captures of the same ground exist, we compare against them as an independent check, point by point.
- Government aircraft LiDAR · 43 State survey marks held out of GroundMap's processing: median −3 mm, 33 of 43 within 10 cm, RMSE 0.12 m. Accuracy
- Two survey campaigns checked against each other · 13.2 mm held-out median mismatch after alignment · Satsop plant study
Registration agreement between scans, not absolute accuracy against control. Survey marks: LIST Survey Control, the LIST © State of Tasmania, CC BY 3.0 AU.
Deliverables
- QA report against the contract specification
- Density, overlap and void maps
- Classification sample review
- Vertical accuracy statement against control
Applications
- Acceptance testing of new capture
- Due diligence on inherited or purchased data
- Fitness-for-purpose checks before design
Satsop plant study Showcase: GroundMap processing of public survey data. Survey data: DARPA Subterranean Challenge (Urban Circuit, Satsop, Washington, February 2020) / US Army Research Laboratory (no licence on record). Processing: GroundMap. No affiliation with the site owner or the survey teams.
- 3 passes agree
- 2 passes agree
- Single pass
- Change detected
- Modelled