public VisualizationService(IOpenCvService openCvService, IFaceService faceService,
                             IEmotionService emotionService)
 {
     _openCvService  = openCvService;
     _faceService    = faceService;
     _emotionService = emotionService;
 }
 public VideoFrameAnalyzerService(IEventAggregator eventAggregator, IVisualizationService visualizationService,
                                  IOpenCvService openCvService, IFaceService faceService, IDataInsertionService dataInsertionService)
 {
     _frameGrabber         = new FrameGrabber <LiveCameraResult>();
     _eventAggregator      = eventAggregator;
     _visualizationService = visualizationService;
     _openCvService        = openCvService;
     _faceService          = faceService;
     _dataInsertionService = dataInsertionService;
     _localFaceDetector    = _openCvService.DefaultFrontalFaceDetector();
 }