Hi guys, I understand the concepts of the 4 types of points that we can have in pix4d but I am having a hard time finding a real life scenario in which some of those types are applicable.
Specifically the 2D and Check Points.
There are four possible point types:
2D GCP: A 2D GCP is a point that has a known 2D position in the scene and is used for the project’s AAT/BBA.
3D GCP: A 3D GCP is a point that has a known 3D position in the scene and that is used for the project’s AAT/BBA.
Check Point: A check point is a point that has a known 3D position in the scene and is used for checking the accuracy of the reconstruction. It is not used for the project’s AAT/BBA.
Manual Tie Point: A manual tie point is a point that is identified by the user in several images. Its position in the scene is not known. Manual tie points are also created by drawing an object on the 3D View of the rayCloud. Each vertex of the object corresponds to one Manual tie point.