internal static extern MediaVisionError Recognize(IntPtr source, IntPtr recognitionModel, IntPtr engineCfg, ref Rectangle faceLocation, RecognizedCallback recognizedCb, IntPtr userData = default(IntPtr));
internal static extern MediaVisionError Recognize(IntPtr source, IntPtr[] imageObjects, int numberOfObjects, IntPtr engineCfg, RecognizedCallback recognizedCb, IntPtr userData = default(IntPtr));