public void Dispose()
 {
     if (_leftHand != null)
     {
         _detector.UnRegisterGesture(_leftHand);
     }
     if (_rightHand != null)
     {
         _detector.UnRegisterGesture(_rightHand);
     }
     if (_leftHandClosed != null)
     {
         _detector.UnRegisterGesture(_leftHandClosed);
     }
     if (_rightHandClosed != null)
     {
         _detector.UnRegisterGesture(_rightHandClosed);
     }
 }