Introduction

Another effective method for improving map accuracy are control points. By supplying additional, external information about the real-world position of the mobile mapping system, this feature improves the trajectory estimate and allows for automatic geo-registration of datasets.

The Control Points feature allows the user to improve the accuracy of the device's trajectory estimate, as well as to automatically geo-reference and align datasets by supplying additional, external information about its real-world position.

For control points, the NavVis M6 needs to be fitted with a calibrated laser cross-pointing from the device's body to the floor. For control points, the NavVis VLX has a mark on the belt hook that must be aligned with the control point on the floor or wall. If the device is equipped to use the feature, an anchor button will appear in the Mapping Dashboard.