Raster collage

From fmepedia

The idea of this scenario is to create an image for a poster, which would have a base map as a background, and two insets - an enlarged portion of the map, and a vintage post card with Capitol building.

This scenario shows how to clip a portion of a raster with RasterSubsetter. It also demonstrates usage of traditionally vector transformers such as Scaler and Offsetter with rasters. It also shows how to add a picture without any geographic references.

The workspace takes two rasters images - one is a map (AustinCapitolFull.jpg and AustinCapitolFull.wld) downloaded from Austin City web servers (its original name is AUSTIN_EAST-SWC1.jp2). Brightness and contrast as well as saturation of this raster are boosted a bit in a graphic editor, and the raster is also resampled by a half and saved as a JPEG image. Another (CapitolEdited.jpg) is just an old post card of the building seen on the raster map in the center.

The workspace calculates new location for the clipped and scaled portion of the original map (lower left corner) and for the post card (upper right corner), moves them to these locations, and mosaics all three parts into one image.