Site Scan outputs are delivered by default in WGS84 in meters, EPSG code 4326.
 
If your work requires a different Coordinate System, you can contact your 3DR Success Services Engineer, or follow the steps below.

Finding the “EPSG” code of the desired output coordinate system(CRS)

To find the EPSG code of the desired CRS, use Site Scan Manager or SpatialReference.org.
In our example, the desired output is California State Plane Zone 3, NAD 83, in Survey Feet.

By searching for California in the Spatial Reference page we determine that the EPSG code for California State Plane Zone 3, NAD 83, in Survey Feet is “2227
 
In the event you want to change the coordinate system you’ll need to use QGIS,
Download the Orthomosaic on your Computer from Site Scan Manager and take note of the location you used to save this file.
 
 

Transforming an Orthomosaic or Digital Elevation Model to a different coordinate system using QGIS

Download QGIS on your Windows computer and go through the Installation procedure.

Open QGIS Desktop as an Administrator.


Click ‘Add Raster Layer’ on the options on the left of the screen and navigate to your Ortho.tif file.

Once Imported, on the tabs at the top of the screen, go to ‘Raster > Projections > Warp (Reproject)…’ at the top of the screen.

In this new screen make the following adjustments:

  • Input file – Leave as it is since we already imported the .tif file into the workspace
  • Output file – Click ‘Select…’ and navigate to the desired folder where the new .tif file will be created
  • Source SRS – Turn this option OFF by clicking the checkbox on the left

Target SRS – Turn ON this option by clicking on the checkbox of the left and then click ‘Select…’, in this new screen look for the desired coordinate system, select it and click OK

  • Leave the other options as their defaults
  • Click the Edit option  and remove the following line of the text ‘-of GMT’ or ‘-of ESAT’.

 
Once you are finished click OK and it’ll begin to process.

This will transform the downloaded Ortho.tif file from WGS84 coordinate system to NAD83 / California zone 3 (ftUS) and save the new file.