/// <summary>
/// Triggered when the user clicks the delete user button located in the app bar
/// </summary>
private async void DeleteButton_Tapped(object sender, TappedRoutedEventArgs e)
{
await currentUser.ImageFolder.DeleteAsync();
FaceAPIHelper.RemoveUserFromWhitelist(currentUser.Name);
await CleanupCameraAsync();
// Navigate to MainPage
Frame.GoBack();
}
/// <summary>
/// Triggered when the user clicks the add photo button located in the app bar
/// </summary>
private async void AddButton_Tapped(object sender, TappedRoutedEventArgs e)
{
// Captures photo from current webcam stream
StorageFile imageFile = await camera.CapturePhoto();
// Moves the captured file to the current user's ID image folder
await imageFile.MoveAsync(currentUser.ImageFolder);
PopulatePhotoGrid();
FaceAPIHelper.AddImageToWhitelist(imageFile, currentUser.Name);
}
// Use this for initialization
void Start()
{
adjuster = GetComponent <UIAdjuster>();
TextAsset api_access_key = Resources.Load("api_access_key") as TextAsset;
apiHelper = new FaceAPIHelper(api_access_key.text, PERSON_GROUP_ID);
currentState = "started";
shouldUpdate = true;
if (!Directory.Exists(SAVE_PATH))
{
Directory.CreateDirectory(SAVE_PATH);
}
}
/// <summary>
/// Triggered when the Confirm photo button is clicked by the user. Stores the captured photo to storage and navigates back to MainPage.
/// </summary>
private async void ConfirmButton_Click(object sender, RoutedEventArgs e)
{
if (!string.IsNullOrWhiteSpace(UserNameBox.Text))
{
var picturesFolder = ApplicationData.Current.LocalCacheFolder;
StorageFolder whitelistFolder = await picturesFolder.CreateFolderAsync(GeneralConstants.WhiteListFolderName, CreationCollisionOption.OpenIfExists);
// Create a folder to store this specific user's photos
StorageFolder currentFolder = await whitelistFolder.CreateFolderAsync(UserNameBox.Text, CreationCollisionOption.ReplaceExisting);
// Move the already captured photo the user's folder
await this.currentIdPhotoFile.MoveAsync(currentFolder);
FaceAPIHelper.AddUserToWhitelist(UserNameBox.Text, currentFolder);
await CleanupCameraAsync();
// Navigate back to MainPage
this.Frame.GoBack();
}
}
/// <summary>
/// Called when user hits physical or vitual doorbell buttons. Captures photo of current webcam view and sends it to Oxford for facial recognition processing.
/// </summary>
private async Task DoorbellPressed()
{
bool showResult = true;
// Display analysing visitors grid to inform user that doorbell press was registered
AnalysingVisitorGrid.Visibility = Visibility.Visible;
List <string> recognizedVisitors = new List <string>();
if (this.camera.Initialized && this.initializedFaceApi)
{
StorageFile image = await this.camera.CapturePhoto();
try {
recognizedVisitors = await FaceAPIHelper.IsFaceInWhitelist(image);
}
catch (FaceRecognitionException e) {
MessageDialog diag = new MessageDialog($"The facial recognition failed: {e.ExceptionType}", "Recognition failed");
await diag.ShowAsync();
showResult = false;
}
catch (FaceAPIException e) {
if (e.ErrorMessage.Contains("exceeded rate limit"))
{
MessageDialog diag = new MessageDialog(e.ErrorMessage, "Exceeded Limit");
await diag.ShowAsync();
showResult = false;
}
Debug.WriteLine(e);
}
catch {
// General error. This can happen if there are no visitors authorized in the whitelist
Debug.WriteLine("WARNING: Oxford just threw a general expception.");
}
if (recognizedVisitors.Count > 0)
{
WelcomeUser(recognizedVisitors[0]);
}
else if (showResult)
{
UnknownUser();
}
}
else
{
if (!this.camera.Initialized)
{
Debug.WriteLine("Unable to analyze visitor as the camera failed to initlialize properly.");
}
if (!this.initializedFaceApi)
{
Debug.WriteLine("Unable to analyze visitor as Facial Recogntion is still initializing.");
}
}
this.doorbellJustPressed = false;
AnalysingVisitorGrid.Visibility = Visibility.Collapsed;
}
/// <summary>
/// Called once, when the app is first opened. Initializes Oxford facial recognition.
/// </summary>
public async void InitializeFaceApi()
{
this.initializedFaceApi = await FaceAPIHelper.Initialize();
UpdateWhitelistedVisitors();
}
private async void btnCapture_Click(object sender, RoutedEventArgs e)
{
image2.Visibility = Visibility.Visible;
image2.Source = image1.Source;
image1.Visibility = Visibility.Hidden;
tempfilename = Helper.SaveTempImageCapture((BitmapSource)image2.Source);
webcam.Stop();
//Login
UserTableDataContext dataContext = new UserTableDataContext();
var usr = dataContext.Users.SingleOrDefault(x => x.username == this.username);
////label.Content = "Please wait...";
if (usr != null)
{
FaceAPIHelper tempImage = new FaceAPIHelper();
string result = await tempImage.UploadOneFace(tempfilename);
if (String.IsNullOrEmpty(result))
{
tempFaceCollection = tempImage.faceResultCollection;
}
else
{
MessageBox.Show(result, "Error", MessageBoxButton.OK);
redo();
return;
}
//Get comparison face for verify
//CHANGE HERE TO BE DYNAMIC
string imagepath = usr.photofile; // dt.Rows[0][0].ToString();
FaceAPIHelper realImage = new FaceAPIHelper();
result = await realImage.UploadOneFace(imagepath);
if (String.IsNullOrEmpty(result))
{
databaseFaceCollection = realImage.faceResultCollection;
}
else
{
MessageBox.Show(result, "Error", MessageBoxButton.OK);
redo();
return;
}
//Verify
string res = await realImage.Verify2Faces(tempFaceCollection, databaseFaceCollection);
if (res.ToLower().Contains("successful"))
{
MessageBox.Show(res, "Successful", MessageBoxButton.OK);
webcam.Stop();
MainMenuWIthLights ss = new MainMenuWIthLights(usr);
ss.Show();
this.Close();
return;
}
else
{
MessageBox.Show(res, "Error", MessageBoxButton.OK);
redo();
return;
}
}
else
{
MessageBox.Show("User not found", "Error", MessageBoxButton.OK);
MainWindow mw = new MainWindow();
mw.Show();
webcam.Stop();
this.Close();
}
}
