Fine Registration & Report

The fine registration page provides the final view of the registered data, including statistics about the fit as well as the final matrices.

The fine registration page has two parts to enable checking the result:

• the 3D view of the data on the left
• the scans and statistics on the right

The 3D view can be read about in more detail here. Clicking on the scan names turns them on or off in the 3D view.

Some summary statistics are shown on the right, along with links to download the final registered matrices and the full registration report.

Report Term Definitions

Maximum scan-to-scan distance

The maximum distance between scans to form clusters in the global ICP to adjust scans locally; chosen by the user in settings

Maximum point search distance

The maximum distance to search from the target to the reference point cloud for a match; chosen by the user in settings

Child Scan

The subject scan

Parent Scan

The fixed reference scan

Mean Point-to-Plane Error

The average (mean) rms error calculated from each point in the child to the best fit plane in the parent, limited by the search threshold. This value can be more accurate for the underlying data as it is affected less by subsampling than point-to-point.

Mean Point-to-Point Error

The average (mean) rms error calculated from each point in the child to the closest point in the parent, limited by the search threshold. This value will be less accurate for the underlying data as it is affected more by subsampling than point-to-plane.

Scan-to-Scan distance

The distance between scan positions

Overlap fraction

The fraction of the child that is matched in the parent, based on the search threshold

RMS point-to-plane distance

The root mean square error calculated from each point in the child to the best fit plane in the parent, limited by the search threshold. This value can be more accurate for the underlying data as it is affected less by subsampling than point-to-point.

RMS point-to-point distance

The root mean square error calculated from each point in the child to the closest point in the parent, limited by the search threshold. This value will be less accurate for the underlying data as it is affected more by subsampling than point-to-plane.

Number of Overlapping Points

The number of points in the child that overlap with the parent with overlap defined by the maximum search distance.