• Home
  • Tutorials
  • Point cloud classification
  • Home
  • Tutorials
  • Point cloud classification

Point cloud classification

Point cloud classification

Creating a Digital Terrain Model (DTM) Using 3Dsurvey’s Point Cloud Classification Wizard.

Starting with a Calculated Point Cloud

Begin with a point cloud (Level 1) that contains obstructions like buildings, cars, and vegetation. These must be removed to isolate terrain points, which can be done manually or using the classification wizard.

In the Point Cloud tab, select the Classification function. The wizard will open with default parameters. Check the Smoothing Factor box and click Next.

Selecting Terrain Patches and Deleting Non-Terrain Points

Choose terrain patches across the point cloud for the software to detect the terrain automatically. Ensure selection covers the entire point cloud, then click Next.

Review the automatic detection results. If needed, add or modify terrain areas. Once satisfied, click Finish to complete the classification process.

The classified terrain points will appear in red, with non-terrain points in other colors. Make final adjustments and click Delete Other to remove non-terrain points.

Calculating the Digital Terrain Model

With a clean set of terrain points, navigate to the DSM tab, select Calculate New, and click Calculate. This generates your Digital Terrain Model (DTM).

Watch the Tutorial

Facebook
Twitter
LinkedIn

Subscribe to our newsletter

What’s new in the field? Stay up to date with our newsletter!

NEW WEBINAR

3Dsurvey by Demand: Top 5 Features Explained

12 December 2024
2pm – 3pm CET

Days
Hours
Minutes
Seconds

You will be redirected to GoToWebinar to register.