Knowledge · Quality

Accuracy and quality control of 3D inventory data

What level of accuracy is realistic and how is it verified? The crucial factor is the combination of measurement concept, controls, and a clearly defined intended use.

In a nutshell

"Millimeter-accurate" is not a reliable performance specification without reference to the task at hand. Measurement, recording, modeling, and output each have their own tolerances.

The required accuracy is derived from the subsequent decision. Connection dimensions for a machine require tighter tolerances than a surface overview. Control points, overlaps, and model checks make the data quality traceable.

When is this topic relevant?

  • Establishment of tolerances for planning and tendering
  • Evaluation of point clouds and models
  • Acceptance of digital inventory data
  • Minimizing risks during installation and coordination

What results can you expect?

  • Documented measurement and modeling requirements
  • Control and reference points
  • Verification against point cloud or target geometry
  • Transparent information on gaps and assumptions

What are the key factors when commissioning a service?

Accuracy specifications should always include the result format, the area under consideration, and the testing method. A dense point cloud alone does not guarantee correct registration.

Helpful for a reliable inquiry: Project goal, location, relevant areas, desired accuracy, existing documents, target format and time frame.

From need to usable data basis

Step What will be clarified?
Task 1 Usage, areas, accuracy and result format
2. Recording Access, security, measurement method and spatial reference
3. Preparation Registration, testing, evaluation and modeling
4. Handover Data structure, quality control and instruction

Relevant topics and applications

Frequently asked questions

What information do you need for a quote?

Helpful information includes the location, approximate size, any existing plans or photos, desired outcome, and timeframe. We will clarify any open technical points together.

How is the required accuracy determined?

Accuracy is derived from the intended use. Different requirements apply to an area overview than to plant connections or a detailed BIM model.

Can existing plans be incorporated?

Yes. Existing documents can serve for preparation, orientation, and supplementation. Deviations from the recorded data will be handled transparently.

In what formats is the data transferred?

Depending on the project, we deliver formats including E57, RCP/RCS, LAS/LAZ, DWG, DXF, Revit, IFC, and PDF. The target format is agreed upon before the project begins.

Your project

What data basis does your planning require?

We will clarify the method, scope and output format to suit your task.

Discuss the project