Improving the display of raster data (how to smooth raster)

ArcMap provides tools to improve the display of a raster. This includes providing faster drawing methods, enhancements, and retaining calculated raster dataset statistics. For instance, you can change the brightness and contrast of your raster and display the raster transparently over other layers. The Image Analysis window and Effects toolbar provide quick access to modify some properties of your displayed raster data. There are also geoprocessing tools that can permanently improve the display of your raster data.