public void RemoveThreshold2Listener(TrackbarListener l) { threshold2Listeners.Remove(l); }
public void RemoveCanny2Listener(TrackbarListener l) { canny2Listeners.Remove(l); }
public void AddThreshold2Listener(TrackbarListener l) { threshold2Listeners.Add(l); }
public void AddCanny2Listener(TrackbarListener l) { canny2Listeners.Add(l); }