Making points active and inactive

Similar to making images active or inactive, you can also designate any number of ground control points (GCP), tie points (TP), or both as either active or inactive.

Among the many benefits of this feature, you can use it to, for example, exclude problematic GCPs, TPs, or both from the model calculations to determine exactly what effect the point or points in question have on the accuracy. That is, by designating points as inactive, you can exclude them from specific images to aid in determining whether the positions of the the points are having a detrimental effect on the accuracy of the model.

Making points active or inactive can help you achieve the project accuracy you want without having to rerun the collection process with various parameter settings. By eliminating extraneous points that have no significant impact on the accuracy, you can also significantly reduce processing time and overall project effort.

After automatic collection, each point is active, by default. However, you can also designate a point as active or inactive when manually collecting points. When you deactivate a point, it is still in your project, but is excluded from processing. At any time—except while a process is running—you can reactivate an inactive point, which makes it available to include in processing.

You can make a point active or inactive in the Residual Errors window.