There are two ways to import control points:

• With the block import: control points can be part of the block definition. See also Import blocks (on page 95)
• With a control points text file imported from the Surveys tab (Import button).

  Supported formats are TXT/CSV and ContextCapture Surveys (XML).

A basic example of supported control points files is a simple TXT file listing control points 3D positions with XYZ coordinates separated by a space.

Control points text file sample: 
GCP_A 315796.627695945 4869916.09237971 627.8
GCP_B 315332.029686681 4870703.80261219 738.9
GCP_C 315483.66078491 4870210.48269584 833.2
GCP_D 315399.200463097 4871212.13895964 906.5

Thanks to the import wizard, you can import a custom text format with delimiter-separated-values, including advanced property like accuracy.

When importing control points, please ensure you have selected the right spatial reference system (SRS) (See Set the spatial reference system (on page 169).