www.emgu.com/wiki
Summation over a pixel param1 x param2 neighborhood with subsequent scaling by 1/(param1 x param2)

Declaration Syntax
public Image<TColor, TDepth> SmoothBlur(
int width,
int height
)
Public Function SmoothBlur ( _
width As Integer, _
height As Integer _
) As Image(Of TColor, TDepth)
public:
Image<TColor, TDepth>^ SmoothBlur(
int width,
int height
)

Parameters
- width (Int32)
- The width of the window
- height (Int32)
- The height of the window

Return Value
The result of blur
Assembly:
Emgu.CV (Module: Emgu.CV) Version: 1.4.3249.6313 (1.4.0.0)