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)

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
)