Registration Module FAQ

GCP

1.[Warning] "The number of reference points is inconsistent with the number of alignment points!"

Reason: The software outputs this warning because the number of imported reference points does not match the number of points to be aligned.
Solution: When importing reference points, ensure that the number of reference points and the number of points to be aligned are consistent.

2.[Warning] "The number of GCP points needs to be greater than 1."

Reason: The software outputs this warning because there are no GCP points or only one point when saving.
Solution: To save the results, you need more than one GCP point.

3.[Warning] "Invalid data detected, please check the input data."

Reason: The software outputs this warning because there are no GCP points or only one point when clicking apply in the GCP function.
Solution: To apply the results, you need more than one GCP point.

1.[Warning] "No region(s) selected! Please select at least one region before running the ICP."

Reason: The software outputs this warning because no calculation region has been selected when running the ICP computation.
Solution: Before running the ICP computation, select the calculation region on the point cloud using a sphere selection.

2.[Warning] "No reference point clouds in the selected regions(s)."

Reason: The software outputs this warning because no calculation region on the reference point cloud has been selected, or there is no reference point cloud, when running the ICP computation.
Solution: Before running the ICP computation, ensure that there are both reference and alignment point clouds, and that calculation regions have been selected on both the reference and alignment point clouds.

3.[Warning] "No point clouds to align in the selected regions(s)!"

Reason: The software outputs this warning because no calculation region on the alignment point cloud has been selected, or there is no alignment point cloud, when running the ICP computation.
Solution: Before running the ICP computation, ensure that there are both reference and alignment point clouds, and that calculation regions have been selected on both the reference and alignment point clouds.

4.[Warning] "ICP failed! You may try it again by selecting region(s) containing featureful objects such as facade/ground."

Reason: The software outputs this warning because the selected region does not contain enough feature points, leading to an ICP computation failure.
Solution: Before running the ICP computation, ensure that the selected region contains rich feature points, such as facades or ground points.

1.[Warning] "The number of reference points is inconsistent with the number of alignment points!"

Reason: The software outputs this warning because the number of imported reference points does not match the number of points to be aligned.
Solution: When importing reference points, ensure that the number of reference points and the number of points to be aligned are consistent.

2.[Warning] "The radius of the detected sphere is, which deviates too much from the preset parameter!"

Reason: The software outputs this warning because the detected sphere radius during the point pair function deviates significantly from the preset radius.
Solution: Adjust the preset sphere radius, or reselect the alignment sphere based on the preset radius.

3.[Warning] "The RMS threshold is exceeded! You may try to set a larger threshold."

Reason: The software outputs this warning because the calculated RMS for the selected alignment sphere in the point pair function does not match the preset RMS value.
Solution: Adjust the preset RMS value, or reselect the alignment sphere.

4.[Warning] "Sphere detection failed!"

Reason: The software outputs this warning because the point cloud in the selected region for the alignment sphere is too sparse.
Solution: Reselect the alignment sphere in a denser point cloud area.

1.[Warning] "No point cloud in registration viewer."

Reason: The software outputs this warning because there is no point cloud to be aligned when entering the rotation/translation function.
Solution: Before starting the rotation/translation function, import the reference and alignment point clouds.

2.[Warning] "There can only be one trajectory in the window."

Reason: The software outputs this warning because the rotation/translation function supports only one trajectory data.
Solution: If you need to import a new trajectory, remove the existing trajectory data first, then import the new trajectory data.

3.[Warning] "The file already exists."

Reason: The software outputs this warning because there is already a trajectory with the same name in the registration window when importing trajectory data.
Solution: If you need to import a new trajectory, remove the existing trajectory data first, then import the new trajectory data.

4.[Warning] "No cloud points in current active project." [Warning] "Get point cloud error."

Reason: The software outputs this warning because there is no point cloud data in the currently active project (mapping or processing) when starting the rotation/translation function.
Solution: Exit the rotation/translation function and ensure that the current project contains point cloud data.

5.[Warning] "This action matches the bounding box centers of the 'to align' cloud(s) and the 'reference' cloud(s)."

Reason: The software outputs this warning because there is no reference point cloud when clicking to match the centers in the rotation/translation function.
Solution: Before clicking to match the centers, ensure that there are both reference and alignment point clouds in the registration window.