![]() ![]() So we will project the map onto this target SRS (Spatial Reference System). Sentinel-2 Images are normally shipped with the UTM projection using the wgs84 reference ellipsoid. We will start with a new project and use Sentinel-2 image as a reference for this one. 5-10 minutes Step 1 – Preparational Steps a scanned map either in JPG or as a tif-fileĪpprox.Quantum GIS (examples shown in QGIS 2.16.2.You can translate this location (x=3216, y=212) to a geographic and therefore “real” spatial system by georeferencing it by using the defined coordinate system which the map is based on. Each pixel of a map has in its original form only a reference according to the whole image: A pixel may be the 3216th in the 212th row but thats all for the beginning. ![]() If you want to connect maps and images with other spatial data each data set needs to be “digitally located”. We will use simple and quite easy affine transformations for this purpose. For this tutorial we will use a Soviet map of Crewe in England to see changes in city structure with a snapshot from 1957. Since our last tutorial regarding georeferencing images in QGIS is 4 years old, let us have a second look at this task in the current times of QGIS 2.16.
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