Emgu CV Library Documentation
cvSub Method (src1, src2, dst, mask)
NamespacesEmgu.CVCvInvokecvSub(IntPtr, IntPtr, IntPtr, IntPtr)

www.emgu.com/wiki
Subtracts one array from another one: dst(I)=src1(I)-src2(I) if mask(I)!=0 All the arrays must have the same type, except the mask, and the same size (or ROI size)
Declaration Syntax
C#Visual BasicVisual C++
public static void cvSub(
	IntPtr src1,
	IntPtr src2,
	IntPtr dst,
	IntPtr mask
)
Public Shared Sub cvSub ( _
	src1 As IntPtr, _
	src2 As IntPtr, _
	dst As IntPtr, _
	mask As IntPtr _
)
public:
static void cvSub(
	IntPtr src1, 
	IntPtr src2, 
	IntPtr dst, 
	IntPtr mask
)
Parameters
src1 (IntPtr)
The first source array
src2 (IntPtr)
The second source array
dst (IntPtr)
The destination array
mask (IntPtr)
Operation mask, 8-bit single channel array; specifies elements of destination array to be changed

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