Unique face detection and saving

See more:

C#

I WANT TO DETECT ONLY UNIQUE FACES FROM A VIDEO USING FACE DETECTION FROM EACH FRAME OF THE VIDEO BUT ONLY WANT TO SAVE UNIQUE FACES TO MY FOLDER FROM ALL THE DETECTED FILES this is the code i am using for processing frame

private void ProcessFrame(object sender, EventArgs e)
       {
           try
           {
               //Step 1: Video Capture
               if (videoCapture != null && videoCapture.Ptr != IntPtr.Zero)
               {
                   videoCapture.Retrieve(frame, 0);
                   currentFrame = frame.ToImage<Bgr, byte>().Resize(picCapture.Width, picCapture.Height, Emgu.CV.CvEnum.Inter.Cubic);

                   //currentFrame = frame.ToImage<Bgr, byte>().Resize(axWindowsMediaPlayer1.Width, axWindowsMediaPlayer1.Height, Emgu.CV.CvEnum.Inter.Cubic);

                   //Render the video capture into the Picture Box PicCapture
                   ////  picCapture.Image = currentFrame.AsBitmap();
                   ///


                   //Step 2: Face Detection
                   if (facesDetectionEnabled)
                   {
                       //Convert from Bgr to Gray Image
                       Mat grayImage = new Mat();
                       CvInvoke.CvtColor(currentFrame, grayImage, ColorConversion.Bgr2Gray);
                       //Enhance the image to get better result
                       CvInvoke.EqualizeHist(grayImage, grayImage);

                       System.Drawing.Rectangle[] faces = faceCasacdeClassifier.DetectMultiScale(grayImage, 1.1, 3);
                       //If faces detected

                       if (faces.Length > 0)
                       {
                           // lbl_FaceCount_Data.Text = faces.Length.ToString();
                           foreach (var face in faces)
                           {
                               //Draw square around each face
                               CvInvoke.Rectangle(currentFrame, face, new Bgr(System.Drawing.Color.Red).MCvScalar, 2);

                               //Step 3: Add Person
                               //Assign the face to the picture Box face picDetected
                               Image<Bgr, byte> resultImage = currentFrame.Convert<Bgr, byte>();
                               resultImage.ROI = face;
                               picDetected.SizeMode = PictureBoxSizeMode.StretchImage;
                               picDetected.Image = resultImage.AsBitmap();


                               if (EnableSaveImage)
                               {
                                   //We will create a directory if does not exists!
                                   // string path = System.IO.Directory.GetCurrentDirectory() + @"\TrainedImages";
                                   string path = Value.ValueG._DataFilePath + "\\Video\\FaceFind\\Video" + Value.ValueG._CaseVideo_Id;

                                   // string matchingImagesFolderPath = "C:\\Path\\To\\MatchingImagesFolder";
                                   string path1 = System.IO.Directory.GetCurrentDirectory() + @"\TrainedImages";
                                   System.IO.Directory.CreateDirectory(path1);


                                   if (!System.IO.Directory.Exists(path))
                                       System.IO.Directory.CreateDirectory(path);
                                   //we will save 10 images with delay a second for each image
                                   //to avoid hang GUI we will create a new task
                                   Task.Factory.StartNew(() =>
                                   {
                                       for (int i = 0; i < 1; i++)
                                       {
                                           //resize the image then saving it
                                           ////  resultImage.Resize(200, 200, Inter.Cubic).Save(path + @"\" + txtPersonName.Text + ImageCount + DateTime.Now.ToString("-hh-mm-ss") + ".jpg");
                                           //// ImageCount++;

                                           resultImage.Resize(200, 200, Inter.Cubic).Save(path + @"\" + txtPersonName.Text + "_" + DateTime.Now.ToString("hh-mm-ss") + ".jpg");

                                           //resultImage.Resize(200, 200, Inter.Cubic).Save(Path.Combine(path1, txtPersonName.Text + "_" + DateTime.Now.ToString("hh-mm-ss") + ".jpg"));


                                           Thread.Sleep(1000);
                                       }
                                   });
                               }
                               EnableSaveImage = true;

                               if (btnAddPerson.InvokeRequired)
                               {
                                   btnAddPerson.Invoke(new ThreadStart(delegate
                                   {
                                       btnAddPerson.Enabled = true;
                                   }));
                               }
                           }
                       }
                   }
                   //Render the video capture into the Picture Box picCapture
                   picCapture.Image = currentFrame.AsBitmap();
                   // axWindowsMediaPlayer1. = currentFrame.AsBitmap();
                   //
                   ////string path1 = Value.ValueG._DataFilePath + "\\Video\\FaceFind\\Video" + Value.ValueG._CaseVideo_Id;
                   ////int fileCount = System.IO.Directory.GetFiles(path1).Length;
                   ////lbl_FaceCount_Data.Text = fileCount.ToString();
               }
               //Dispose the Current Frame after processing it to reduce the memory consumption.
               if (currentFrame != null)
               {
                   currentFrame.Dispose();
               }
               ////string path1 = Value.ValueG._DataFilePath + "\\Video\\FaceFind\\Video" + Value.ValueG._CaseVideo_Id;
               ////int fileCount = System.IO.Directory.GetFiles(path1).Length;
               ////lbl_FaceCount_Data.Text = fileCount.ToString();
           }
           catch (Exception ex)
           {
               MessageBox.Show(ex.Message);
           }
           finally
           {

           }
       }

What I have tried:

I HAVE TRIED MANY WAYS BUT THE PROBLEM COMING IS IT IS DETECTING THE SAME FACE AGAIN AND AGAIN WITH FRAME AND SAVING THEM TO THE FOLDER WHERE I WANT IT TO SAVE ONLY ONE UNIQUE FACE OF A PARTICULAR PERSON TO THE FOLDER IAM USING Emgu.CV,FaceRecognitionDotNet,DlibDotNet .iam doing it in c# windows forms

IS THERE ANY WAY TO SAVE THE UNIQUE FACES ONLY FROM THE VIDEO AND REMOVE THE FACES WHICHN ARE REPEATING.THIS PROCESS SHOULD WORK WHILE PROCESSING OF THE VIDEO