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dev:desktop_ext:point_cloud_change_detection [2022/07/25 14:03]
paulien [Source] 		dev:desktop_ext:point_cloud_change_detection [2023/06/27 15:21] (current)
karen [Parameters: Output]
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 This page describes how to use the extension "Point Cloud Change Detection"\\ This page describes how to use the extension "Point Cloud Change Detection"\\
  
-{{orbit_desktop:how_to_find.png?25&nolink  |}} [[dev:desktop:workspace:main_toolbar|Main Toolbar]] > Extensions > Point Cloud Change Detection+{{orbit_desktop:how_to_find.png?25&nolink  |}} Main Toolbar > Extract > Point Cloud Change Detection
  
 The "Point Cloud Change Detection" extension makes it possible to compare 2 point clouds.\\ The "Point Cloud Change Detection" extension makes it possible to compare 2 point clouds.\\
- 
  
 {{ :dev:desktop_ext:pointcloudchange214.png?nolink&800 |}} {{ :dev:desktop_ext:pointcloudchange214.png?nolink&800 |}}
- 
  
 ===== Concepts ===== ===== Concepts =====
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 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. 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 projects and associated files are stored next to the source point cloud.  +Point cloud change detection project files are stored in the same location as the source point cloud. 
  
  
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 ===== Parameters ===== ===== Parameters =====
  
-==== Algorithm ==== +Generic concepts, see [[dev:desktop:preferences:detectors|]] 
- +===== Results =====
-=== Voxel Size === +
- +
-The selected area is divided in voxels with a defined size. For every voxel, the change detection will give information on how many points are added or removed.  +
- +
-For less dense point clouds, a higher voxel size should be used.  +
- +
-=== Voxels Change Pts Min ===  +
- +
-The minimum number of points that should be added or removed in a voxel in order to add the voxel to the result datasets.  +
- +
-=== Voxels Context Min === +
- +
-The minimum number of voxels that should be around a voxel in order to consider the voxel. This to exclude isolated voxels.  +
- +
-==== Output ====+
  
 === Voxel Result ===  === Voxel Result === 
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 Depending on the chosen output parameters, the following results are available: Depending on the chosen output parameters, the following results are available:
  
-=== Cluster Result ===+=== Cluster Results ===
  
 This change_voxel_clusters vector file clusters the voxels that are within the clustering distance. Every cluster has the attributes: This change_voxel_clusters vector file clusters the voxels that are within the clustering distance. Every cluster has the attributes:
 
Last modified:: 2022/07/25 14:03