public static async Task <List <UserViewModel> > RecognizeAsync(byte[] imgdata)
{
try
{
//var imageCandidates = (await InitAzureOxfordFace().DetectAsync(new MemoryStream(imgdata))).Select(c => new UserViewModel(c.FaceId)).ToList();
var imageCandidates = (await InitAzureOfficialFace().Face.DetectWithStreamAsync(new MemoryStream(imgdata), recognitionModel: RecognitionModel.Recognition02)).ToList();
List <UserViewModel> users = new List <UserViewModel>();
if (imageCandidates.Any())
{
//var response = await InitAzureOxfordFace().IdentifyAsync(groupId, imageCandidates.Select(c => c.Id).ToArray(), (float)0.65, 1);
List <string> faceIds = imageCandidates.Select(c => c.FaceId.Value.ToString()).ToList();
//var response = await InitAzureOfficialFace().Face.IdentifyAsync(faceIds, groupId, null, 1, 0.5);
var requestModel = new IdentifyRequestModel
{
PersonGroupId = groupId,
FaceIds = faceIds.ToArray(),
MaxNumOfCandidatesReturned = 1,
ConfidenceThreshold = 0.5
};
var response = await AzureFaceRestClient.IdentifyAsync(SUBSCRIPTION_KEY, ENDPOINT, requestModel);
//var persons = await GetAllAsync();
foreach (var item in response)
{
var current = item.Candidates.FirstOrDefault();
if (current != null)
{
var candidate = await GetAllAsync(Guid.Parse(current.PersonId));
candidate.Confidence = current.Confidence;
users.Add(candidate);
}
}
}
return(users.Where(c => c.Confidence.HasValue).ToList());
}
catch (Exception ex)
{
throw ex;
}
}
public static async Task <List <IdentifyResponseModel> > IdentifyAsync(string subscriptionKey, string endpoint, IdentifyRequestModel model)
{
try
{
string uriBase = $"{endpoint}/face/v1.0/identify";
HttpClient client = new HttpClient();
client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", subscriptionKey);
var json = JsonConvert.SerializeObject(model);
HttpResponseMessage response;
var data = new StringContent(json, Encoding.UTF8, "application/json");
response = await client.PostAsync(uriBase, data);
string result = response.Content.ReadAsStringAsync().Result;
return(JsonConvert.DeserializeObject <List <IdentifyResponseModel> >(result));
}
catch (Exception ex)
{
throw ex;
}
}