Emgu CV Library Documentation
Subtraction Operator
NamespacesEmgu.CVImage<(Of <(TColor, TDepth>)>)Subtraction(Image<(Of <(TColor, TDepth>)>), TColor)

www.emgu.com/wiki
Elementwise subtract another image from the current image
Declaration Syntax
C#Visual BasicVisual C++
public static Image<TColor, TDepth> operator -(
	Image<TColor, TDepth> img1,
	TColor val
)
Public Shared Operator - ( _
	img1 As Image(Of TColor, TDepth), _
	val As TColor _
) As Image(Of TColor, TDepth)
public:
static Image<TColor, TDepth>^ operator -(
	Image<TColor, TDepth>^ img1, 
	TColor val
)
Parameters
img1 (Image<(Of <(TColor, TDepth>)>))
The image to be substracted
val (TColor)
The color to be subtracted
Return Value
The result of elementwise subtracting from img1

Assembly: Emgu.CV (Module: Emgu.CV) Version: 1.3.0.0 (1.3.0.0)