/// <summary>
/// Accessor of the motion channel of the retina (models peripheral vision)
/// </summary>
/// <returns>The motion channel of the retina.</returns>
public Image <Gray, byte> GetMagno()
{
if (_ptr == IntPtr.Zero)
{
return(null);
}
Image <Gray, Byte> magno = new Image <Gray, byte>(_inputSize);
CvInvoke.CvRetinaGetMagno(_ptr, magno);
return(magno);
}