/// <summary>
/// Pick image and call find similar for each faces detected
/// </summary>
/// <param name="sender">Event sender</param>
/// <param name="e">Event arguments</param>
private async void FindSimilar_Click(object sender, RoutedEventArgs e)
{
// Show file picker
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
dlg.DefaultExt = ".jpg";
dlg.Filter = "Image files(*.jpg) | *.jpg";
var filePicker = dlg.ShowDialog();
if (filePicker.HasValue && filePicker.Value)
{
// User picked image
// Clear previous detection and find similar results
TargetFaces.Clear();
FindSimilarCollection.Clear();
var sw = Stopwatch.StartNew();
SelectedFile = dlg.FileName;
var imageInfo = UIHelper.GetImageInfoForRendering(SelectedFile);
// Detect all faces in the picked image
using (var fileStream = File.OpenRead(SelectedFile))
{
MainWindow.Log("Request: Detecting faces in {0}", SelectedFile);
MainWindow mainWindow = Window.GetWindow(this) as MainWindow;
string subscriptionKey = mainWindow._scenariosControl.SubscriptionKey;
var faceServiceClient = new FaceServiceClient(subscriptionKey);
var faces = await faceServiceClient.DetectAsync(fileStream);
// Update detected faces on UI
foreach (var face in UIHelper.CalculateFaceRectangleForRendering(faces, MaxImageSize, imageInfo))
{
TargetFaces.Add(face);
}
MainWindow.Log("Response: Success. Detected {0} face(s) in {0}", faces.Length, SelectedFile);
// Find similar faces for each face
foreach (var f in faces)
{
var faceId = f.FaceId;
MainWindow.Log("Request: Finding similar faces for face {0}", faceId);
try
{
// Call find similar REST API, the result contains all the face ids which similar to the query face
const int requestCandidatesCount = 3;
var result = await faceServiceClient.FindSimilarAsync(faceId, _faceListName, requestCandidatesCount);
// Update find similar results collection for rendering
var gg = new FindSimilarResult();
gg.Faces = new ObservableCollection <Face>();
gg.QueryFace = new Face()
{
ImagePath = SelectedFile,
Top = f.FaceRectangle.Top,
Left = f.FaceRectangle.Left,
Width = f.FaceRectangle.Width,
Height = f.FaceRectangle.Height,
FaceId = faceId.ToString(),
};
foreach (var fr in result)
{
gg.Faces.Add(FacesCollection.First(ff => ff.FaceId == fr.PersistedFaceId.ToString()));
}
MainWindow.Log("Response: Found {0} similar faces for face {1}", gg.Faces.Count, faceId);
FindSimilarCollection.Add(gg);
}
catch (FaceAPIException ex)
{
MainWindow.Log("Response: {0}. {1}", ex.ErrorCode, ex.ErrorMessage);
}
}
}
}
}
/// <summary>
/// Pick image folder and detect all faces in these images
/// </summary>
/// <param name="sender">Event sender</param>
/// <param name="e">Event arguments</param>
private async void FolderPicker_Click(object sender, RoutedEventArgs e)
{
// Show folder picker
System.Windows.Forms.FolderBrowserDialog dlg = new System.Windows.Forms.FolderBrowserDialog();
var result = dlg.ShowDialog();
bool forceContinue = false;
if (result == System.Windows.Forms.DialogResult.OK)
{
// Enumerate all ".jpg" files in the folder, call detect
List <Task> tasks = new List <Task>();
FacesCollection.Clear();
TargetFaces.Clear();
FindSimilarCollection.Clear();
SelectedFile = null;
// Set the suggestion count is intent to minimum the data preparetion step only,
// it's not corresponding to service side constraint
const int SuggestionCount = 10;
int processCount = 0;
MainWindow.Log("Request: Preparing, detecting faces in chosen folder.");
MainWindow mainWindow = Window.GetWindow(this) as MainWindow;
string subscriptionKey = mainWindow._scenariosControl.SubscriptionKey;
var faceServiceClient = new FaceServiceClient(subscriptionKey);
_faceListName = Guid.NewGuid().ToString();
await faceServiceClient.CreateFaceListAsync(_faceListName, _faceListName, "face list for sample");
foreach (var img in Directory.EnumerateFiles(dlg.SelectedPath, "*.jpg", SearchOption.AllDirectories))
{
tasks.Add(Task.Factory.StartNew(
async(obj) =>
{
var imgPath = obj as string;
// Call detection
using (var fStream = File.OpenRead(imgPath))
{
try
{
var faces = await faceServiceClient.AddFaceToFaceListAsync(_faceListName, fStream);
return(new Tuple <string, ClientContract.AddPersistedFaceResult>(imgPath, faces));
}
catch (FaceAPIException)
{
// Here we simply ignore all detection failure in this sample
// You may handle these exceptions by check the Error.Error.Code and Error.Message property for ClientException object
return(new Tuple <string, ClientContract.AddPersistedFaceResult>(imgPath, null));
}
}
},
img).Unwrap().ContinueWith((detectTask) =>
{
var res = detectTask.Result;
if (res.Item2 == null)
{
return;
}
// Update detected faces on UI
this.Dispatcher.Invoke(
new Action <ObservableCollection <Face>, string, ClientContract.AddPersistedFaceResult>(UIHelper.UpdateFace),
FacesCollection,
res.Item1,
res.Item2);
}));
processCount++;
if (processCount >= SuggestionCount && !forceContinue)
{
var continueProcess = System.Windows.Forms.MessageBox.Show("The images loaded have reached the recommended count, may take long time if proceed. Would you like to continue to load images?", "Warning", System.Windows.Forms.MessageBoxButtons.YesNo);
if (continueProcess == System.Windows.Forms.DialogResult.Yes)
{
forceContinue = true;
}
else
{
break;
}
}
}
await Task.WhenAll(tasks);
MainWindow.Log("Response: Success. Total {0} faces are detected.", FacesCollection.Count);
}
}
/// <summary>
/// Pick image and call find similar for each faces detected
/// </summary>
/// <param name="sender">Event sender</param>
/// <param name="e">Event arguments</param>
private async void FindSimilar_Click(object sender, RoutedEventArgs e)
{
// Show file picker
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
dlg.DefaultExt = ".jpg";
dlg.Filter = "Image files(*.jpg) | *.jpg";
var filePicker = dlg.ShowDialog();
if (filePicker.HasValue && filePicker.Value)
{
// User picked image
// Clear previous detection and find similar results
TargetFaces.Clear();
FindSimilarCollection.Clear();
var sw = Stopwatch.StartNew();
SelectedFile = dlg.FileName;
var imageInfo = UIHelper.GetImageInfoForRendering(SelectedFile);
// Detect all faces in the picked image
using (var fileStream = File.OpenRead(SelectedFile))
{
Output = Output.AppendLine(string.Format("Request: Detecting faces in {0}", SelectedFile));
var faces = await App.Instance.DetectAsync(fileStream);
// Update detected faces on UI
foreach (var face in UIHelper.CalculateFaceRectangleForRendering(faces, MaxImageSize, imageInfo))
{
TargetFaces.Add(face);
}
Output = Output.AppendLine(string.Format("Response: Success. Detected {0} face(s) in {0}", faces.Length, SelectedFile));
// Find similar faces for each face
foreach (var f in faces)
{
var faceId = f.FaceId;
Output = Output.AppendLine(string.Format("Request: Finding similar faces for face {0}", faceId));
try
{
// Call find similar REST API, the result contains all the face ids which similar to the query face
var result = await App.Instance.FindSimilarAsync(faceId, FacesCollection.Select(ff => Guid.Parse(ff.FaceId)).ToArray());
// Update find similar results collection for rendering
var gg = new FindSimilarResult();
gg.Faces = new ObservableCollection <Face>();
gg.QueryFace = new Face()
{
ImagePath = SelectedFile,
Top = f.FaceRectangle.Top,
Left = f.FaceRectangle.Left,
Width = f.FaceRectangle.Width,
Height = f.FaceRectangle.Height,
FaceId = faceId.ToString(),
};
foreach (var fr in result)
{
gg.Faces.Add(FacesCollection.First(ff => ff.FaceId == fr.FaceId.ToString()));
}
Output = Output.AppendLine(string.Format("Response: Found {0} similar faces for face {1}", gg.Faces.Count, faceId));
FindSimilarCollection.Add(gg);
}
catch (ClientException ex)
{
Output = Output.AppendLine(string.Format("Response: {0}. {1}", ex.Error.Code, ex.Error.Message));
}
}
}
}
}