Beispiel #1
0
        static void Main()
        {
            FaceApiCalls x = new FaceApiCalls(new HttpClientWrapper());
            var          a = x.CreateNewFaceset("5").Result.Faceset_token;

            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new FormFaceDetection());
        }
        //this should probably return action result, otherwise nothing will happen in the frontend IIRC
        public async Task <ActionResult> CaptureSnapshot(string imgBase64, string latitude, string longitude)
        {
            FaceApiCalls apiCalls = new FaceApiCalls(new HttpClientWrapper());

            // Prepare base64 string
            imgBase64 = imgBase64.Substring(imgBase64.IndexOf("base64,", StringComparison.Ordinal) + 7);
            imgBase64 = imgBase64.Substring(0, imgBase64.LastIndexOf("\"", StringComparison.Ordinal));
            imgBase64 = imgBase64.Replace(" ", "+");

            // Create a bitmap
            byte[] bitmapData = Convert.FromBase64String(FixBase64ForImage(imgBase64));
            System.IO.MemoryStream streamBitmap = new System.IO.MemoryStream(bitmapData);
            Bitmap bitmap = new Bitmap((Bitmap)Image.FromStream(streamBitmap));

            bitmap = HelperMethods.ProcessImage(bitmap);
            // Analyze bitmap
            FrameAnalysisJSON analysisResult = await FaceProcessor.ProcessFrame(bitmap);

            if (analysisResult == null)
            {
                //error must've occured, should alert user.
                return(null);
            }

            if (analysisResult.Faces.Count == 0)
            {
                return(Json(new { result = "No faces have been found in the provided picture" }, JsonRequestBehavior.AllowGet));
            }

            var biggestConfidence = LikelinessConfidence.LowProbability;

            foreach (var face in analysisResult.Faces)
            {
                var searchResult = await apiCalls.SearchFaceInFaceset(face.Face_token);

                if (searchResult != null)
                {
                    foreach (var likelinessResult in searchResult.LikelinessConfidences()) //might want to set the camera properties to some value.
                    {
                        biggestConfidence = (likelinessResult.Confidence > biggestConfidence)
                            ? likelinessResult.Confidence
                            : biggestConfidence;

                        await SearchResultHandler.HandleOneResult(result : likelinessResult,
                                                                  minimumConfidence : LikelinessConfidence.VeryHighProbability,
                                                                  cameraProperties : new CameraProperties(Convert.ToDouble(latitude), Convert.ToDouble(longitude)));
                    }
                }
            }

            return
                (Json(new
                      { result =
                            string.Format("There's a {0} probability that the person/people from your picture are currently missing. Thank you for the submission, appropriate actions will be taken.",
                                          biggestConfidence.ToPrettyString()) }, JsonRequestBehavior.AllowGet));
        }