private async Task <IPersistedRecognition> PersistRecognition(IRecognition recognition, ILogger logger)
{
var tag = recognition.Tags.OrderByDescending(tag => tag.Confidence).FirstOrDefault();
var name = tag?.Name;
var confidence = tag?.Confidence ?? 0f;
var uri = await _persistenceProvider.Save(recognition);
return(new PersistedRecognition(name, confidence, uri.ToString()));
}
public async Task <(Guid, Uri)> Save(IRecognition recognition)
{
var id = Guid.NewGuid();
var fileName = "{id}.png";
using (var stream = new MemoryStream(recognition.Data))
{
var face = await _facesClient.AddAsync(new Director.Client.FileParameter(stream, fileName), recognition.Meta.Location);
var tag = recognition.Tags.OrderByDescending(tag => tag.Confidence).FirstOrDefault();
if (tag != null)
{
var persisted = await _facesClient.AddRecognitionAsync(face.Id, Director.Client.Recognisers.MLNET, tag.Name, tag.Confidence);
}
return(face.Id, new Uri(face.Uri));
}
}
public Task HandleAsync(AuthorizationHandlerContext context)
{
string siteId = (context.Resource as HttpContext).Request.Query["siteId"];
foreach (var requirement in context.PendingRequirements)
{
IRecognition recognizer = null;
double score = 1.0d;
switch (requirement)
{
case FaceRecognitionRequirement r:
recognizer = new FaceRecognition();
score = r.ConfidenceScore;
break;
case BodyRecognitionRequirement r:
recognizer = new BodyRecognition();
score = r.ConfidenceScore;
break;
case FaceRecognitionRequirement r:
recognizer = new VoiceRecognition();
score = r.ConfidenceScore;
break;
}
if (recognizer != null && recognizer.Recognize(siteId, out string name) >= score)
{
context.User.AddIdentity(new ClaimsIdentity(new GenericIdentity(name)));
context.Succeed(requirement);
}
else
{
context.Fail();
}
}
return(Task.CompletedTask);
}
public SegmentationImages(IRecognition recognition, ISettingsRecognition settings)
{
_recognition = recognition;
_settings = settings;
}
private void ShowRecognition(IRecognition recognition)
{
_recognition = recognition;
panelPhotoUpload.Visible = true;
}
public Task <IPersistedRecognition> PersistRecognition(IRecognition recognition)
{
return(_persistRecognition(recognition));
}
