The next step is to determine the coordinate system for the image, for which the georeferencing tools must be accessed. To do this, the user must first select the image they wish to georeference in the “Contents” panel and then go to the “Imagery” tab in the ribbon and click on the “Georeference” tool in the “Alignment” group. This action will open the “Georeference” tab, which includes different groups and their specific tools.
Activating the image georeferencing tools.
Before initiating georeferencing, the user must define the desired coordinate system of the image. In this example, the system “WGS 1984 UTM Zone 17S” is used. To select the coordinate system, after activating the “Georeference” tab, the user should click on the “Set SRS” button within the “Prepare” group.
Ribbon options in the “Georeference” tab.
Executing this action opens the “Map Properties: Map > Coordinate Systems” pop-up window, where the user can select the desired coordinate system. For instance, “WGS 1984 UTM Zone 17S” can be found within the “Projected Coordinate Systems”. Optionally, the user can mark this coordinate system as a favorite by right-clicking on it and selecting “Add to Favorites”. This action saves it under “Favorites”, making it more easily accessible in future instances.
The path to the coordinate system for this example is the following:
Projected Coordinate System > UTM > WGS 1984 > Southern Hemisphere > WGS 1984 UTM Zone 17S
Selecting the coordinate system.
