This page describes how to use the extension “Point Cloud Change Detection”
Main Toolbar > Extract > Point Cloud Change Detection
The “Point Cloud Change Detection” extension makes it possible to compare 2 point clouds.
The change between two point clouds can be analyzed by dividing the point cloud in voxels and counting the number of added and removed points within every voxel.
Point cloud change detection project files are stored in the same location as the source point cloud.
Use the generic workflow for Point Cloud Based Extensions to define the source file.
The method for the range of interest is 'Area'.
Add the active point cloud dataset from the dataset list that will be compared with the source point cloud dataset.
Generic concepts, see Preferences for Detectors
The change_voxels vector file includes all the voxels that have added or removed points in the change analysis. Every voxel has the attributes:
Depending on the chosen output parameters, the following results are available:
This change_voxel_clusters vector file clusters the voxels that are within the clustering distance. Every cluster has the attributes:
The results are two opc and ops files: