Most of OpenCV functions support 1,2,3 or 4 channels

Namespace: Emgu.CV.Structure
Assembly: Emgu.CV (in Emgu.CV.dll) Version: 2.0.1.0 (2.0.1.0)

Syntax

C#
public int nChannels

Visual Basic (Declaration)
Public nChannels As Integer

Visual C++
public: int nChannels

See Also