Differences
This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Last revision Both sides next revision | ||
dev:desktop_ext:point_cloud_change_detection [2021/04/15 12:41] paulien [Concepts] |
dev:desktop_ext:point_cloud_change_detection [2023/06/27 15:20] karen [Parameters: Algorithm] |
||
---|---|---|---|
Line 1: | Line 1: | ||
====== Point Cloud Change Detection ====== | ====== Point Cloud Change Detection ====== | ||
- | FIXME | + | |
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: | + | {{orbit_desktop: |
- | The "Point Cloud Change Detection" | + | The "Point Cloud Change Detection" |
+ | {{ : | ||
===== Concepts ===== | ===== Concepts ===== | ||
- | Two point cloud datasets | + | The change between two point clouds |
- | The results are two opc files: one with the added points | + | |
+ | Point cloud change detection project | ||
===== Source ===== | ===== Source ===== | ||
- | Every pointcloud from the datasetlist can be selected in the source | + | Use the generic workflow for [[dev: |
+ | The method for the range of interest is ' | ||
+ | |||
+ | |||
+ | ===== Compare Point Cloud ===== | ||
+ | |||
+ | Add the active point cloud dataset from the dataset list that will be compared with the source point cloud dataset. | ||
===== Parameters ===== | ===== Parameters ===== | ||
- | ==== Algorithm | + | Generic concepts, see [[dev: |
+ | ===== Parameters: Output ===== | ||
+ | |||
+ | === Voxel Result | ||
- | === Voxel Size === | + | The change_voxels vector file includes all the voxels that have added or removed points in the change analysis. Every voxel has the attributes: |
+ | * FD_PointCount1: | ||
+ | * FD_PointCount2: | ||
+ | * FD_PointCloudDelta: | ||
+ | * FD_PointCloudDeltaAbsolute: | ||
- | The selected area is divided in voxels. For every voxel, the change detection will be applied on how many points | + | Depending on the chosen output parameters, the following results |
- | === Voxels Change Pts Min === | + | === Cluster Results |
- | The minimum number | + | This change_voxel_clusters vector file clusters the voxels that are within the clustering distance. Every cluster has the attributes: |
+ | * Cluster size: Number of voxels in cluster | ||
+ | * FD_AvgPointCount1: | ||
+ | * FD_AvgPointCount2: | ||
+ | * FD_AvgPointCloudDelta: | ||
+ | * FD_AvgPointCloudDeltaAbsolute: | ||
- | === 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. | + | === Create Added OPC and Removed OPC === |
- | ==== Output ==== | + | The results are two opc and ops files: |
+ | * The added points in the compared pointcloud | ||
+ | * The removed points in the compared pointcloud | ||
- | T | ||
- | ===== Results ===== |
Last modified:: 2023/06/27 15:21