The Control Points workflow supports the georeferencing and verification of point cloud data using measured control points. It provides a streamlined process for defining, managing, and validating control points throughout a project.
There are several ways to add control points in a project:
Import control points from supported external file formats.
Define control points directly within PinPoint.
The workflow supports multiple target types, including:
Leica targets
Natural targets
3D spherical targets
Leica targets are automatically detected in project imagery and matched to their corresponding control points across the entire point cloud. If a target is assigned incorrectly or requires review, observations can be manually reassigned to the appropriate control point.
Natural targets are arbitrary point features with no physical targets. These targets can be defined using a dedicated 3D image viewer, allowing observations to be selected directly from project imagery. Once selected, natural target positions can be refined against neighbouring candidates in image space.
Control points can be easily managed using:
Drag-and-drop functionality for reordering
Multi-selection for bulk operations
After adjustment, residual values are calculated and displayed for each control point. Residuals indicate the difference between measured and computed positions.