EmguCV ImageGrabbed Event WPF App
===

I have problems with the following code


    namespace MyApp
    {    
        public partial class PhotoWindow : Window
        {
            private Capture _capture;
    
            public PhotoWindow ()
            {
                InitializeComponent();    
                _capture = new Capture();
    
                if (_capture != null)
                {
                    //<Image> in XAML
                    CaptureSource.Width = 150;
                    CaptureSource.Height = 180;
    
                    _capture.ImageGrabbed += ProcessFrame;
                    _capture.Start();                
                }
    
                Activated += (s, e) => _capture.Start();
                Closing += (s, e) =>
                {
                    if (_capture == null) return;
                    _capture.Stop();                
                    _capture.Dispose();
                };
            }
    
            private void ProcessFrame(object sender, EventArgs e)
            {
                try
                {
                    Image<Bgr, Byte> frame = _capture.RetrieveBgrFrame();                   
                    CaptureSource.Source = Helper.ToBitmapSource(frame);
                }
                catch (Exception exception)
                {
                    
                    System.Windows.MessageBox.Show(exception.ToString());
                }
            }
    
        }
    }



when I run the application I get the exception `System.InvalidOperationException: The thread that this call can not access this object because the owner is another thread` on line `CaptureSource.Source = Helper.ToBitmapSource(frame);`

**As I can solve this?**