Documentation and Control¶
An important part of surface modeling is documenting the results in a way that is suitable for internal control, customer dialogue, and contract follow-up.
Difference Models¶
Difference models are used to show deviations between two surfaces, for example:
- projected versus executed
- before and after situation
- theoretical rock profile versus surveyed rock profile
- previous versus new survey
Deviations are often presented graphically with intervals and legends in 2D and 3D. This makes it easier to identify areas with surplus or deficit, deviations from tolerances, or the need for further measures.
Difference model displayed in 3D view
Metadata and Traceability¶
It is good practice to associate information about data source, processing, and quality with point clouds and models. Metadata may include:
- origin and date
- filters and edits applied
- resolution and reduction
- coordinate system and height reference
- responsible user or process
Good traceability is important for quality assurance and verifiability.
Reporting and Export¶
Results from surface modeling can be exported for further use in reporting, design, and production. Common export formats are:
- model files with metadata
- formats for collaboration and documentation, such as IFC and DWG
- model files adapted for machine control systems
When exporting for further production, the model's level of detail, geometry, and any optimization settings should be verified against the recipient's requirements.