Shrink and Expand
grid_tools
ParameterRaster|INPUT|Grid|False
ParameterSelection|OPERATION|Operation|[0] Shrink;[1] Expand;[2] shrink and expand;[3] expand and shrink|3
ParameterSelection|CIRCLE|Search Mode|[0] Square;[1] Circle
ParameterNumber|RADIUS|Radius|1|None|1
ParameterSelection|EXPAND|Method|[0] min;[1] max;[2] mean;[3] majority|3
OutputRaster|RESULT|Result Grid