async Task OnAddImage()
{
await ExecuteAsync(async() =>
{
await CheckPermissionAndAskIfIsNeeded(Permission.Camera);
await CheckPermissionAndAskIfIsNeeded(Permission.Storage);
_photo = await GetFacePhotoTaked();
if (_photo == null)
{
return;
}
PhotoTaked = _photo.Path;
byte[] byteArray = GetByteArray(_photo);
var detectResults = await FaceApiService.DetectFaces(byteArray);
if (!(await IsPhotoValid(detectResults)))
{
return;
}
var identifyResults = await FaceApiService.Identify(new IdentifyFaceRequest()
{
FaceIds = detectResults.Select(x => x.FaceId).ToList(),
MaxNumOfCandidatesReturned = 10,
PersonGroupId = _personGroup.PersonGroupId,
ConfidenceThreshold = 0.5
});
var persons = await FaceApiService.GetPersons();
if (detectResults == null || identifyResults == null || persons == null)
{
return;
}
FacesDetected = identifyResults.Select(res => new FaceDetectedItemViewModel()
{
FaceId = res.FaceId,
FaceRectangle = detectResults.FirstOrDefault(detResults => detResults.FaceId == res.FaceId).FaceRectangle,
FaceAttributes = detectResults.FirstOrDefault(detResults => detResults.FaceId == res.FaceId).FaceAttributes,
PersonName = persons?.FirstOrDefault(p => p.PersonId == res.Candidates?.FirstOrDefault(cand => cand.PersonId == p.PersonId)?.PersonId)?.Name
}).ToList();
});
}