The raster extension gives the capability of opening lots of raster formats (tif, ecw, jpg, png) as georeferenced layers. It is also useful for applying raster transformations such as georeferencing, geolocalization and a basic feature for raster reprojection. Moreover, the raster extension gives the possibility of creating regions of interest (ROIs), overviews, histograms and also changing the properties of visualization (bands order, filters, etc.) of a raster layer.