SQLデータベースに指紋テンプレートを保存する

Question

私はU.are.u指紋4500リーダーを持っていますが、現在付属しているsdkは指紋テンプレートをデータベースではなくファイルとして保存します。私はそれをデータベースに保存し、データベースから指を確認することもできます。これは以下のコードです

namespace Enrollment 
{ 
    /* NOTE: This form is a base for the EnrollmentForm and the VerificationForm, 
     All changes in the CaptureForm will be reflected in all its derived forms. 
    */ 
    public partial class CaptureForm : Form, DPFP.Capture.EventHandler 
    { 
     public CaptureForm() 
     { 
      InitializeComponent(); 
     } 

     protected virtual void Init() 
     { 
      try 
      { 
       Capturer = new DPFP.Capture.Capture();    // Create a capture operation. 

       if (null != Capturer) 
        Capturer.EventHandler = this;     // Subscribe for capturing events. 
       else 
        SetPrompt("Can't initiate capture operation!"); 
      } 
      catch 
      {    
       MessageBox.Show("Can't initiate capture operation!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);    
      } 
     } 

     protected virtual void Process(DPFP.Sample Sample) 
     { 
      // Draw fingerprint sample image. 
      DrawPicture(ConvertSampleToBitmap(Sample)); 
     } 

     protected void Start() 
     { 
      if (null != Capturer) 
      { 
       try 
       { 
        Capturer.StartCapture(); 
        SetPrompt("Using the fingerprint reader, scan your fingerprint."); 
       } 
       catch 
       { 
        SetPrompt("Can't initiate capture!"); 
       } 
      } 
     } 

     protected void Stop() 
     { 
      if (null != Capturer) 
      { 
       try 
       { 
        Capturer.StopCapture(); 
       } 
       catch 
       { 
        SetPrompt("Can't terminate capture!"); 
       } 
      } 
     } 

    #region Form Event Handlers: 

     private void CaptureForm_Load(object sender, EventArgs e) 
     { 
      Init(); 
      Start();            // Start capture operation. 
     } 

     private void CaptureForm_FormClosed(object sender, FormClosedEventArgs e) 
     { 
      Stop(); 
     } 
    #endregion 

    #region EventHandler Members: 

     public void OnComplete(object Capture, string ReaderSerialNumber, DPFP.Sample Sample) 
     { 
      MakeReport("The fingerprint sample was captured."); 
      SetPrompt("Scan the same fingerprint again."); 
      Process(Sample); 
     } 

     public void OnFingerGone(object Capture, string ReaderSerialNumber) 
     { 
      MakeReport("The finger was removed from the fingerprint reader."); 
     } 

     public void OnFingerTouch(object Capture, string ReaderSerialNumber) 
     { 
      MakeReport("The fingerprint reader was touched."); 
     } 

     public void OnReaderConnect(object Capture, string ReaderSerialNumber) 
     { 
      MakeReport("The fingerprint reader was connected."); 
     } 

     public void OnReaderDisconnect(object Capture, string ReaderSerialNumber) 
     { 
      MakeReport("The fingerprint reader was disconnected."); 
     } 

     public void OnSampleQuality(object Capture, string ReaderSerialNumber, DPFP.Capture.CaptureFeedback CaptureFeedback) 
     { 
      if (CaptureFeedback == DPFP.Capture.CaptureFeedback.Good) 
       MakeReport("The quality of the fingerprint sample is good."); 
      else 
       MakeReport("The quality of the fingerprint sample is poor."); 
     } 
    #endregion 

     protected Bitmap ConvertSampleToBitmap(DPFP.Sample Sample) 
     { 
      DPFP.Capture.SampleConversion Convertor = new DPFP.Capture.SampleConversion(); // Create a sample convertor. 
      Bitmap bitmap = null;               // TODO: the size doesn't matter 
      Convertor.ConvertToPicture(Sample, ref bitmap);         // TODO: return bitmap as a result 
      return bitmap; 
     } 

     protected DPFP.FeatureSet ExtractFeatures(DPFP.Sample Sample, DPFP.Processing.DataPurpose Purpose) 
     { 
      DPFP.Processing.FeatureExtraction Extractor = new DPFP.Processing.FeatureExtraction(); // Create a feature extractor 
      DPFP.Capture.CaptureFeedback feedback = DPFP.Capture.CaptureFeedback.None; 
      DPFP.FeatureSet features = new DPFP.FeatureSet(); 
      Extractor.CreateFeatureSet(Sample, Purpose, ref feedback, ref features);   // TODO: return features as a result? 
      if (feedback == DPFP.Capture.CaptureFeedback.Good) 
       return features; 
      else 
       return null; 
     } 

     protected void SetStatus(string status) 
     { 
      this.Invoke(new Function(delegate() { 
       StatusLine.Text = status; 
      })); 
     } 

     protected void SetPrompt(string prompt) 
     { 
      this.Invoke(new Function(delegate() { 
       Prompt.Text = prompt; 
      })); 
     } 
     protected void MakeReport(string message) 
     { 
      this.Invoke(new Function(delegate() { 
       StatusText.AppendText(message + "\r\n"); 
      })); 
     } 

     private void DrawPicture(Bitmap bitmap) 
     { 
      this.Invoke(new Function(delegate() { 
       Picture.Image = new Bitmap(bitmap, Picture.Size); // fit the image into the picture box 
      })); 
     } 

     private DPFP.Capture.Capture Capturer; 

    } 
} 

Answer 1

あなたはDBの対話コードを表示していないので、実際に誰もあなたを助けることはできません。あなたが望むものにあなたを導くために、以下の操作を行います。 -

1. Process機能を使用して、DBへの指紋を保存することができる場所です。 Bitmapまたは直接DPFP.Sample形式をバイナリデータまたはバイト配列としてDBに保存します。選択はデザインによって異なります。簡単なメンテナンスのためにBitmapを提案します。

   // Draw fingerprint sample image. 
       var fingerprintBMP = DrawPicture(ConvertSampleToBitmap(Sample)); 
       //Call a function eg. SaveToDB(fingerprintBMP) to save to DB 
   

   protected virtual void Process(DPFP.Sample Sample) {

   }

2. SaveToDB機能が問題になることはありません。 linkを参照してください。