Map filters use an object named map to modify an image: you map the image to the object. So, you can create 3D effects by mapping your image to another previously embossed image (「Bumpmap」 Filter) or to a sphere (「Map Object」 filter). You can also map a part of the image elsewhere into the same image (「Illusion」 and 「Tile Seamless」 filters), bend a text along a curve (「Displace」 filter)...