Complete Tutorial: Point Cloud to Terrain Model
What You’ll Learn
- The complete DTM creation workflow from raw point cloud to finished terrain model
- How ground classification affects DTM accuracy
- Traditional approaches vs. automated cloud processing
- Best practices for quality control
The Traditional DTM Workflow (Complex)
Install Software
Global Mapper, LAStools, or QGIS with plugins. Each has a learning curve.
Load & Inspect
Import LAS, check CRS, verify point count. Large files may need tiling.
Classify Ground
Set parameters, tune for terrain type, multiple iterations, manual cleanup.
Generate & Export
Create TIN or raster, choose interpolation, export, validate.
Total time: Hours to days depending on data size and terrain complexity.
The Automated Approach: DTM in Minutes
01
Upload (2 min)
Drag and drop your LAS or LAZ file. Select your coordinate reference system (auto-detected when possible).
02
Classify (5-15 min)
AI-powered classification runs automatically. Ground points identified, no parameter tuning required.
03
Download (instant)
DTM as GeoTIFF, hillshade visualization, contour lines as DXF, slope map—all ready to use.
DTM Resolution Guide
| Resolution | Use Case | Point Density Needed |
|---|---|---|
| 0.5m | Detailed engineering, earthworks | 8+ points/m² |
| 1m | Standard surveying, site design | 4+ points/m² |
| 2m | Regional mapping, flood modeling | 1+ points/m² |
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