Import of GCP co-ordinates / CRS transformation

The co-ordinates (E/N/H or latitude/longitude/altitude) of the GCPs (Full Reference mode and Single Point mode) can be loaded from a “.txt” file or other text based files (e.g. “.csv”, “.prt”, “.dat”). The format has to be defined correctly during the import process. Examples:

• Point – Comma 
  XX.XXX,YY.YYY,ZZ.ZZZ
• Comma – Semicolon 
  XX,XXX;YY,YYY;ZZ,ZZZ
• Point – Space 
  XX.XXX YY.YYY ZZ.ZZZ
• Co-ordinates:
  Easting / Northing / Elevation
  9453674.75         456235.21           248.45
  9452978.18         456576.89           223.15
  9458763.65         456832.76           287.83
• Point name and co-ordinates: 
  GCP_Name / Easting / Northing / Elevation
  GCP1      9453674.75         456235.21           248.45   
  GCP2      9452978.18         456576.89           223.15   
  GCP3      9458763.65         456832.76           287.83

Standard operating procedure for a Generic co-ordinate import 

1. Click on the “Load GCP from Text File”  button.
2. A dialog window (Figure 29) appears requiring following inputs:
   1. Character encoding
   2. Used separator
   3. Data classification (E/N/H and name or latitude/longitude/altitude and name)
   4. Select the Source co-ordinate reference system Generic from the pull-down menu 
   5. Select the unit from the pull-down menu for undefined source co-ordinate reference systems. Available units are (millimeter [mm],  meter [m], inch [in], international foot [ft], US survey foot [ft]) 
3. Click the “OK” button to import the co-ordinates

1. Source co-ordinate reference system Generic 
2. Desired unit

Standard operating procedure for a specific co-ordinate system import

1. Click on the “Load GCP from Text File”  button.
2. A dialog window (Figure 29) appears requiring following inputs:
   1. Character encoding
   2. Used separator
   3. Data classification (E/N/H and name or latitude/longitude/altitude and name)
   4. Select the Source co-ordinate reference system from the pull-down menu Browse Co-ordinate System”  and define the system in the Select Co-ordinate Reference System dialog (horizontal and vertical system).
   5. Select “Same as Source” from the pull-down menu for the Destination co-ordinate reference system 
   6. Optional! Apply a manual, user-defined offset to the transformation by enabling the “Apply Offset” checkbox. Then enter the corresponding values for E, N, and H in the provided fields. 
3. Confirm the import by selecting the “Apply” button. 

1. Source co-ordinate reference system 
2. Selection of Source co-ordinate reference system 
3. Selection of the Source co-ordinate reference system – vertical system
4. Destination co-ordinate reference system “Same as Source”
5. Manual offset (optional)

Standard operating procedure for a specific co-ordinate import and CRS transformation

Both horizontal and vertical transformations are fully supported, including geoid-to-ellipsoid height conversions, ensuring seamless integration of local 3D photogrammetric models with global coordinate systems by following standard operating procedure:

1. Click on the “Load GCP from Text File”  button.
2. A dialog window appears requiring following inputs:
   1. Character encoding
   2. Used separator
   3. Data classification (E/N/H and name or latitude/longitude/altitude and name)
   4. Select the Source co-ordinate reference system from the pull-down menu Browse Co-ordinate System” 
3. Specify the co-ordinate system (horizontal and vertical system) in the Select Co-ordinate Reference System dialog and click the “Select”  button.
4. Select the desired transformation from the “Co-ordinate Reference System Transformation”  pull-down menu and check the PROJ-based transformation displayed in the Details section below. 
5. Optional! Apply a manual, user-defined offset to the transformation by enabling the Apply Offset checkbox. Then enter the corresponding values for E, N, and H in the provided fields. 
6. Confirm the transformation by selecting the “Apply” button. 

1. Source co-ordinate reference system 
2. Destination co-ordinate reference system 
3. Selection of the co-ordinate reference systems
4. Selection of the co-ordinate reference systems – vertical systems
5. Co-ordinate reference system transformation
6. Manual offset (optional)