public static async void ProcessQueueMessage([ServiceBusTrigger("events")] string message, TextWriter log)
{
InitializeServices();
log.WriteLine(message);
JObject mess = JObject.Parse(message);
string deviceId = mess["deviceId"].ToString();
JToken deviceName = mess["IoTHub"]["ConnectionDeviceId"];
JToken blobName = mess["blobName"];
string cameraId = mess["cameraId"].ToString().ToLower();
Device device = ddbService.GetDevice(deviceId);
string eventType = device.Cameras.Where(c => c.Id.ToLower() == cameraId).FirstOrDefault().EventType;
//TODO: co když camera nebude
MemoryStream faceStream = new MemoryStream();
faceStream = storageService.DownloadBlockBlob($"{deviceId}/{blobName}");
MemoryStream detectStream = new MemoryStream();
faceStream.CopyTo(detectStream);
detectStream.Seek(0, SeekOrigin.Begin);
Face[] detectionResult =
await
faceApiService.DetectAsync(detectStream,
returnFaceAttributes :
new List <FaceAttributeType>
{
FaceAttributeType.Age,
FaceAttributeType.Gender,
FaceAttributeType.Smile
});
Debug.WriteLine($"Detecting done. Got {detectionResult.Count()} faces. Image: {blobName}");
if (!detectionResult.Any())
{
Debug.WriteLine("No faces detected. Deleting blob.");
//TODO: zapsat event, bez fotky a dalších dat
//Smazat blob
//await storageService.DeleteBlockBlob($"{deviceId}/{blobName}");
return;
}
Event newEvent = new Event
{
CameraId = cameraId,
DeviceId = device.DeviceId,
EventType = eventType,
StoreId = device.StoreId,
TenantId = device.TenantId,
Person = new VisitPerson
{
Age = detectionResult[0].FaceAttributes.Age,
Gender = detectionResult[0].FaceAttributes.Gender,
Smile = detectionResult[0].FaceAttributes.Smile
},
TimeStamp = DateTime.Now
};
string personId;
IdentifyResult[] identifyResults =
await faceApiService.IdentifyAsync(personGroupId, detectionResult.Select(f => f.FaceId).ToArray());
Debug.WriteLine($"Identification done. Got {identifyResults.Count()} results.");
if (!identifyResults.Any() || !identifyResults.FirstOrDefault().Candidates.Any())
{
Debug.WriteLine("Unable to identify person for this face. Creating new person.");
CreatePersonResult persResult =
await faceApiService.CreatePersonAsync(personGroupId, Guid.NewGuid().ToString());
Debug.WriteLine($"New person created with PersonId: {persResult.PersonId}");
personId = persResult.PersonId.ToString();
}
else
{
Candidate candidate = identifyResults.FirstOrDefault().Candidates.FirstOrDefault();
if (candidate.Confidence < 0.8)
{
Debug.WriteLine(
$"Identification not confident enough ({candidate.Confidence}). Creating new person.");
CreatePersonResult persResult =
await faceApiService.CreatePersonAsync(personGroupId, Guid.NewGuid().ToString());
Debug.WriteLine($"New person created with PersonId: {persResult.PersonId}");
newEvent.SuggestedPersonId = candidate.PersonId.ToString();
personId = persResult.PersonId.ToString();
newEvent.Confidence = candidate.Confidence;
}
else
{
Person pers = await faceApiService.GetPersonAsync(personGroupId, candidate.PersonId);
Debug.WriteLine(
$"Person recognized: {pers.PersonId}. We have {pers.PersistedFaceIds.Length} faces recorded for this person.");
if (pers.PersistedFaceIds.Length == 248)
{
Guid persistedFaceId = pers.PersistedFaceIds.OrderBy(x => Guid.NewGuid()).FirstOrDefault();
await faceApiService.DeletePersonFaceAsync(personGroupId, candidate.PersonId, persistedFaceId);
}
personId = candidate.PersonId.ToString();
newEvent.Confidence = candidate.Confidence;
}
}
newEvent.PersonId = personId;
MemoryStream addFaceStream = new MemoryStream();
faceStream.Seek(0, SeekOrigin.Begin);
faceStream.CopyTo(addFaceStream);
addFaceStream.Seek(0, SeekOrigin.Begin);
await faceApiService.AddPersonFaceAsync(personGroupId, new Guid(newEvent.PersonId), addFaceStream);
await faceApiService.TrainPersonGroupAsync(personGroupId);
await ddbService.SaveAsync(newEvent);
await ProcessEventAsync(newEvent);
faceStream.Dispose();
//await storageService.DeleteBlockBlob($"{deviceId}/{blobName}");
Debug.WriteLine("Processing done.");
}