/// <summary>
/// Run a complete detection on a new image.
/// </summary>
private void RunDetection()
{
// clear the label
Description.Text = "---";
// show the spinner
Spinner.Visibility = Visibility.Visible;
// detect what's in the image
(var cat, var dog) = DetectScene(imagePath);
// build the description
var description = cat > dog ? "Cat" : "Dog";
description += $" detected - cat confidence: {cat * 100:0}%";
description += $", dog confidence: {dog * 100:0}%";
// show the description
Description.Text = description;
// hide the spinner
Spinner.Visibility = Visibility.Hidden;
// tell the canvas to redraw itself
MainCanvas.InvalidateVisual();
}
/// <summary>
/// Run a complete face detection on a new image.
/// </summary>
private async Task RunFaceDetection()
{
// show the spinner
Spinner.Visibility = Visibility.Visible;
// clear any existing face rectangles and labels
var toDelete = new List <UIElement>();
foreach (var element in MainCanvas.Children.OfType <UIElement>())
{
if (element is System.Windows.Shapes.Rectangle || element is Label)
{
toDelete.Add(element);
}
}
foreach (var element in toDelete)
{
MainCanvas.Children.Remove(element);
}
// detect all faces in image
celebrities = await DetectCelebrities(image);
// draw face rectangles on the canvas
foreach (var celebrity in celebrities)
{
DrawFaceRectangle(celebrity);
}
// hide the spinner
Spinner.Visibility = Visibility.Hidden;
// tell the canvas to redraw itself
MainCanvas.InvalidateVisual();
}
/// <summary>
/// Run a complete face detection on a new image.
/// </summary>
private async Task RunFaceDetection()
{
// show the spinner
Spinner.Visibility = Visibility.Visible;
// clear any existing face rectangles
var toDelete = new List <UIElement>(MainCanvas.Children.OfType <System.Windows.Shapes.Rectangle>());
foreach (var element in toDelete)
{
MainCanvas.Children.Remove(element);
}
// detect all faces in image
faces = await DetectFaces(image);
// draw face rectangles on the canvas
foreach (var face in faces)
{
DrawFaceRectangle(face);
}
// hide the spinner
Spinner.Visibility = Visibility.Hidden;
// tell the canvas to redraw itself
MainCanvas.InvalidateVisual();
}
//Zoom
private void ZoomSlider_ValueChanged(object sender, RoutedPropertyChangedEventArgs <double> e)
{
if (isRendered)
{
ScaleTransform scale;
if (e.NewValue > e.OldValue)
{
scale = new ScaleTransform(MainCanvas.LayoutTransform.Value.M11 + 0.13, MainCanvas.LayoutTransform.Value.M22 + 0.13);
}
else
{
scale = new ScaleTransform(MainCanvas.LayoutTransform.Value.M11 - 0.13, MainCanvas.LayoutTransform.Value.M22 - 0.13);
}
MainCanvas.LayoutTransform = scale;
MainCanvas.InvalidateVisual();
}
}
public void EndPreview()
{
if (_shouldPlayMusic)
{
StopMusic();
}
IsPreviewing = false;
_hitsoundHandle.Set();
// ensure responding to dimension change
_loaded = false;
// clear canvas
MainCanvas.Stop();
MainCanvas.InvalidateVisual();
}
/// <summary>
/// Run a complete detection on a new image.
/// </summary>
private async Task RunDetection()
{
// show the spinner
Spinner.Visibility = Visibility.Visible;
// detect what's in the image
description = await DetectScene(image);
// show the description
Description.Text = description;
// hide the spinner
Spinner.Visibility = Visibility.Hidden;
// tell the canvas to redraw itself
MainCanvas.InvalidateVisual();
// speak the description
await SpeakDescription(description);
}
/// <summary>
/// Find the requested image and show it.
/// </summary>
/// <param name="searchString">The string to search for.</param>
private async Task FindImage(string searchString)
{
// show the spinner
Spinner.Visibility = Visibility.Visible;
// find an image matching the query
var img = await SearchForImage(searchString);
if (img != null)
{
//// describe the image
var description = await DescribeScene(img.ContentUrl);
// show the image
var image = new BitmapImage(new Uri(img.ContentUrl));
var brush = new ImageBrush(image);
brush.Stretch = Stretch.Uniform;
brush.AlignmentX = AlignmentX.Left;
brush.AlignmentY = AlignmentY.Top;
MainCanvas.Background = brush;
// hide the spinner
Spinner.Visibility = Visibility.Hidden;
// tell the canvas to redraw itself
MainCanvas.InvalidateVisual();
//// speak the description
await SpeakDescription(description);
}
// hide the spinner
else
{
Spinner.Visibility = Visibility.Hidden;
}
}
