Digital Persona отпечатки пальцев Проверка из базы данных не работает

Question

Device : Digital Persona u.are.u 4500 

В то время как регистрация я коплю данные в базе данных SQL в формате image (тип данных SQL является изображением) Он работает должным образом мои данные правильно сохранены в базе данных ,, но теперь, когда я проверки данных во время моей проверки ее предоставление исключений

hresult : 0xffff. 

Вот мой C# код для проверки

SqlConnection conn = new SqlConnection(connetionstring); 
conn.Open(); 
SqlCommand cmd = new SqlCommand("SELECT * FROM mySavedDataTable", conn); 
MemoryStream ms; 
byte[] fpBytes; 
SqlDataAdapter sd = new SqlDataAdapter(cmd); 
DataTable dt = new DataTable(); 
sd.Fill(dt); 

foreach (DataRow dr in dt.Rows) 
{ 
    fpBytes = Encoding.UTF8.GetBytes(dr["Template"].ToString()); 
    ms = new System.IO.MemoryStream(fpBytes); 
    DPFP.Template template = new DPFP.Template(); 
    template.Serialize(ms); 
    Verificator.Verify(features, template, ref result); 
    if (result.Verified) 
    { 
     ver = true; 
     break; 
    } 
} 
conn.Close(); 

Answer 1

Я сделал, как это и он работает как шарм!

DataResult<Fmd> resultConversion = null; 
IdentifyResult identifyResult = null; 
string MobileNumber = ""; 
string Cnic = ""; 

// Check capture quality and throw an error if bad. 
if (!this.CheckCaptureResult(captureResult)) return; 
// See the SDK documentation for an explanation on threshold scores. 
int thresholdScore = DPFJ_PROBABILITY_ONE * 1/100000; 
DataSet dataSetBiometric = DatabaseHandler.getData("select CNIC, MOBILE_NUMBER, BIOMETRIC from ACCOUNT_OPENING"); 
//select CNIC, MOBILE_NUMBER, BIOMETRIC from ACCOUNT_OPENING 
Fmd[] fmds = new Fmd[dataSetBiometric.Tables[0].Rows.Count]; 
for (int i = 0; i < dataSetBiometric.Tables[0].Rows.Count; i++) 
{ 
    fmds[0] = Fmd.DeserializeXml(dataSetBiometric.Tables[0].Rows[i]["BIOMETRIC"].ToString());//BIOMETRIC 
    resultConversion = FeatureExtraction.CreateFmdFromFid(captureResult.Data, Constants.Formats.Fmd.ANSI); 
    identifyResult = Comparison.Identify(resultConversion.Data, 0, fmds, thresholdScore, dataSetBiometric.Tables[0].Rows.Count); 
    if (identifyResult.ResultCode == Constants.ResultCode.DP_SUCCESS) 
    { 
     MobileNumber = dataSetBiometric.Tables[0].Rows[i]["MOBILE_NUMBER"].ToString(); 
     Cnic = dataSetBiometric.Tables[0].Rows[i]["CNIC"].ToString(); 
     break; 
    } 
} 

Answer 2

Я сделал, как эту надежду, что это поможет (полный рабочий решений) Digital Persona OneTouch SDk

Imports System.Reflection.MethodBase 
Imports System.Data.SqlClient 
Imports System.IO 

Public Class frmThumbEnrol 
    Implements DPFP.Capture.EventHandler 

    Private Capturer As DPFP.Capture.Capture 
    Delegate Sub FunctionCall(ByVal param) 

    Private Event OnTemplate(ByVal template) 

    Private Enroller As DPFP.Processing.Enrollment 
    Public Sel_UsrID As String 

    Public Enum Thumb 
     Enrol 
     Verify 
    End Enum 
    Public theModule As Thumb 

    Private Sub Me_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load 
     Try 
      If theModule = Thumb.Enrol Then 
       Me.Text = "[ Thumb Impression - Enrol ]" 
       Me.btnSave.Visible = True 
       Me.btnClose.Text = "Cancel" 
      Else 
       Me.Text = "[ Thumb Impression - Verify ]" 
       Me.btnSave.Visible = False 
       Me.btnClose.Text = "Close" 
      End If 

      Me.txtStatus.Clear() 
      Me.PBoxThumb.Image = Nothing 
      Me.lblCount.Text = "" 

      Init() 

      StartCapture() 

     Catch ex As Exception 
      ErrMsg(ex, GetCurrentMethod.Name) 
     End Try 
    End Sub 

    Public Overridable Sub Init() 
     Try 

      Capturer = New DPFP.Capture.Capture() 'create a capture operation. 
      Enroller = New DPFP.Processing.Enrollment 

      Me.lblCount.Text = IIf(theModule = Thumb.Enrol, "Fingerprint Samples Needed: " & Enroller.FeaturesNeeded.ToString, "") 

      If (Not Capturer Is Nothing) Then 
       Capturer.EventHandler = Me 'capturing events. 
      Else 
       MakeReport("Can't initiate capture operation!") 
      End If 

     Catch ex As Exception 
      ErrMsg(ex, GetCurrentMethod.Name) 
     End Try 
    End Sub 

    Private Sub StartCapture() 
     Try 

      If (Not Capturer Is Nothing) Then 
       Capturer.StartCapture() 
      End If 

     Catch ex As Exception 
      ErrMsg(ex, GetCurrentMethod.Name) 
     End Try 
    End Sub 

    '------------------------------------------------------------------------------------------------------------------ 
    Private Sub btnClose_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnClose.Click 
     Try 

      StopCapture() 

      Me.Close() 

     Catch ex As Exception 
      ErrMsg(ex, GetCurrentMethod.Name) 
     End Try 
    End Sub 

    Private Sub StopCapture() 
     Try 

      If (Not Capturer Is Nothing) Then 
       Capturer.StopCapture() 
      End If 

     Catch ex As Exception 
      ErrMsg(ex, GetCurrentMethod.Name) 
     End Try 
    End Sub 

    '------------------------------------------------------------------------------------------------------------------ 
    Private Sub OnReaderConnect(ByVal Capture As Object, ByVal ReaderSerialNumber As String) Implements DPFP.Capture.EventHandler.OnReaderConnect 
     Try 

      MakeReport("The fingerprint reader was connected.") 

     Catch ex As Exception 
      ErrMsg(ex, GetCurrentMethod.Name) 
     End Try 
    End Sub 
    Private Sub OnReaderDisconnect(ByVal Capture As Object, ByVal ReaderSerialNumber As String) Implements DPFP.Capture.EventHandler.OnReaderDisconnect 
     Try 

      MakeReport("The fingerprint reader was disconnected.") 

     Catch ex As Exception 
      ErrMsg(ex, GetCurrentMethod.Name) 
     End Try 
    End Sub 

    Private Sub OnFingerTouch(ByVal Capture As Object, ByVal ReaderSerialNumber As String) Implements DPFP.Capture.EventHandler.OnFingerTouch 
     Try 

      MakeReport("The fingerprint reader was touched.") 

     Catch ex As Exception 
      ErrMsg(ex, GetCurrentMethod.Name) 
     End Try 
    End Sub 
    Private Sub OnFingerGone(ByVal Capture As Object, ByVal ReaderSerialNumber As String) Implements DPFP.Capture.EventHandler.OnFingerGone 
     Try 

      MakeReport("The finger was removed from the fingerprint reader.") 

     Catch ex As Exception 
      ErrMsg(ex, GetCurrentMethod.Name) 
     End Try 
    End Sub 

    Private Sub OnComplete(ByVal Capture As Object, ByVal ReaderSerialNumber As String, ByVal Sample As DPFP.Sample) Implements DPFP.Capture.EventHandler.OnComplete 
     Try 

      MakeReport("The fingerprint sample was captured.") 

      If theModule = Thumb.Enrol Then 
       Process_Enrol(Sample) 
      Else 
       Process_Verify(Sample) 
      End If 

     Catch ex As Exception 
      ErrMsg(ex, GetCurrentMethod.Name) 
     End Try 
    End Sub 

    Private Sub OnSampleQuality(ByVal Capture As Object, ByVal ReaderSerialNumber As String, ByVal CaptureFeedback As DPFP.Capture.CaptureFeedback) Implements DPFP.Capture.EventHandler.OnSampleQuality 
     Try 

      If CaptureFeedback = DPFP.Capture.CaptureFeedback.Good Then 
       MakeReport("The quality of the fingerprint sample is good.") 
      Else 
       MakeReport("The quality of the fingerprint sample is poor.") 
      End If 

     Catch ex As Exception 
      ErrMsg(ex, GetCurrentMethod.Name) 
     End Try 
    End Sub 

    Private Sub MakeReport(ByVal status) 
     Try 

      Invoke(New FunctionCall(AddressOf _MakeReport), status) 

     Catch ex As Exception 
      ErrMsg(ex, GetCurrentMethod.Name) 
     End Try 
    End Sub 
    Private Sub _MakeReport(ByVal status) 
     Try 

      Me.txtStatus.AppendText(status + Chr(13) + Chr(10)) 

     Catch ex As Exception 
      ErrMsg(ex, GetCurrentMethod.Name) 
     End Try 
    End Sub 

    '------------------------------------------------------------------------------------------------------------------ 
    Protected Sub DrawPicture(ByVal bmp) 
     Invoke(New FunctionCall(AddressOf _DrawPicture), bmp) 
    End Sub 
    Private Sub _DrawPicture(ByVal bmp) 
     Me.PBoxThumb.Image = New Bitmap(bmp, Me.PBoxThumb.Size) 
    End Sub 

    Private Function ConvertSampleToBitmap(ByVal Sample As DPFP.Sample) As Bitmap 
     Dim bitmap As Bitmap = Nothing 

     Try 

      Dim convertor As New DPFP.Capture.SampleConversion() 

      convertor.ConvertToPicture(Sample, bitmap) 

     Catch ex As Exception 
      ErrMsg(ex, GetCurrentMethod.Name) 
     End Try 

     Return bitmap 

    End Function 

    Private Function Extract_Features(ByVal Sample As DPFP.Sample, ByVal Purpose As DPFP.Processing.DataPurpose) As DPFP.FeatureSet 
     Try 

      Dim extractor As New DPFP.Processing.FeatureExtraction() ' Create a feature extractor 
      Dim feedback As DPFP.Capture.CaptureFeedback = DPFP.Capture.CaptureFeedback.None 
      Dim features As New DPFP.FeatureSet() 

      extractor.CreateFeatureSet(Sample, Purpose, feedback, features) ' TODO: return features as a result? 

      If (feedback = DPFP.Capture.CaptureFeedback.Good) Then 
       Return features 
      End If 

     Catch ex As Exception 
      ErrMsg(ex, GetCurrentMethod.Name) 
     End Try 

     Return Nothing 

    End Function 

    Protected Sub SetStatus(ByVal status) 
     Try 

      Invoke(New FunctionCall(AddressOf _SetStatus), status) 

     Catch ex As Exception 
      ErrMsg(ex, GetCurrentMethod.Name) 
     End Try 
    End Sub 
    Private Sub _SetStatus(ByVal status) 
     Try 

      Me.lblCount.Text = status 

     Catch ex As Exception 
      ErrMsg(ex, GetCurrentMethod.Name) 
     End Try 
    End Sub 

    'Template Enrol 
    Private Sub Process_Enrol(ByVal Sample As DPFP.Sample) 
     Try 
      DrawPicture(ConvertSampleToBitmap(Sample)) 

      Dim Features_Enrol As DPFP.FeatureSet = Extract_Features(Sample, DPFP.Processing.DataPurpose.Enrollment) 

      If Not Features_Enrol Is Nothing Then 'Check quality of the sample if it's good 
       Try 
        MakeReport("The fingerprint feature set was created.") 
        Enroller.AddFeatures(Features_Enrol) 
       Finally 
        SetStatus("Fingerprint Templates Remaining: " & Enroller.FeaturesNeeded.ToString) 

        Select Case Enroller.TemplateStatus 
         Case DPFP.Processing.Enrollment.Status.Ready 'Report success and stop capturing 
          RaiseEvent OnTemplate(Enroller.Template) 
          StopCapture() 
          SetStatus("Fingerprint Templates Completed. Save now....") 

         Case DPFP.Processing.Enrollment.Status.Failed 'Report failure and restart capturing 
          Enroller.Clear() 
          StopCapture() 
          RaiseEvent OnTemplate(Nothing) 
          StartCapture() 
        End Select 
       End Try 
      End If 
     Catch ex As Exception 
      ErrMsg(ex, GetCurrentMethod.Name) 
     End Try 
    End Sub 

    'Template Verify 
    Private Sub Process_Verify(ByVal Sample As DPFP.Sample) 
     Try 

      DrawPicture(ConvertSampleToBitmap(Sample)) 

      Dim Features_Verify As DPFP.FeatureSet = Extract_Features(Sample, DPFP.Processing.DataPurpose.Verification) 
      Dim Verificator As New DPFP.Verification.Verification 
      Dim result As New DPFP.Verification.Verification.Result() 

      If Not Features_Verify Is Nothing Then 'Check quality of the sample if it's good 
       Dim fs As MemoryStream = New MemoryStream 
       Dim fs_bytes As Byte() 

       Dim obj As New cQryExec 
       Dim qry As String = "Select FingerImpr From [TableName] Where ID = '[PersonID]' And isThumb = 1" 
       Dim dset As New DataSet 

       dset = obj.ReturnDSet(qry) 

       If dset.Tables(0).Rows.Count > 0 Then 
        fs_bytes = dset.Tables(0).Rows(0).Item("FingerImpr") 
        fs = New IO.MemoryStream(fs_bytes) 

        Dim Saved_Template As New DPFP.Template(fs) 

        Verificator.Verify(Features_Verify, Saved_Template, result) 
       End If 

       If result.Verified Then 
        MakeReport("The fingerprint was VERIFIED.") 
       Else 
        MakeReport("The fingerprint was NOT VERIFIED.") 
       End If 
      End If 

     Catch ex As Exception 
      ErrMsg(ex, GetCurrentMethod.Name) 
     End Try 
    End Sub 

    'Save ------------------------------------------------------------------------------------------------------------- 
    Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click 
     Try 

      If Enroller.FeaturesNeeded > 0 Then 
       MessageBox.Show("'Insufficient Templates'." & vbCrLf & Enroller.FeaturesNeeded.ToString & " more 'Fingerprint' scans needed.", MsgHeader, MessageBoxButtons.OK, MessageBoxIcon.Information) 
       Exit Sub 
      End If 

      Dim obj As New cQryExec 

      Dim fs As MemoryStream = New MemoryStream 
      Enroller.Template.Serialize(fs) 

      fs.Position = 0 
      Dim br As BinaryReader = New BinaryReader(fs) 
      Dim fs_bytes() As Byte = br.ReadBytes(CType(fs.Length, Int32)) 

      Dim cmd As SqlCommand = New SqlCommand("Update [TableName] Set FingerImpr = @FingerImpr Where ID = '[PersonID]'", mycon) 
      cmd.Parameters.Add("@FingerImpr", SqlDbType.Image).Value = fs_bytes 

      If mycon.State = ConnectionState.Closed Then 
       mycon.Open() 
      End If 

      cmd.ExecuteNonQuery() 

      If mycon.State <> ConnectionState.Closed Then 
       mycon.Close() 
      End If 


      MessageBox.Show("'Fingerprint' Templates Saved successfully.", MsgHeader, MessageBoxButtons.OK, MessageBoxIcon.Information) 
      btnClose_Click("", System.EventArgs.Empty) 

     Catch ex As Exception 
      ErrMsg(ex, GetCurrentMethod.Name) 
     End Try 
    End Sub 

End Class 

Answer 3

Integração ком Digital Persona 4500 Fingerprint

Aqui FACO о Вставка дос Дадос

protected override void Process(DPFP.Sample Sample) 
    { 
     base.Process(Sample); 
     var app = new Aplicacao_Biometria(); 
     int id = 1; 
     var result = app.Listar_Planos_id(id); 

     // Process the sample and create a feature set for the enrollment purpose. 
     DPFP.FeatureSet features = ExtractFeatures(Sample, DPFP.Processing.DataPurpose.Enrollment); 

     // Check quality of the sample and add to enroller if it's good 
     if (features != null) try 
      { 
       MakeReport("The fingerprint feature set was created."); 
       Enroller.AddFeatures(features);  // Add feature set to template. 
      } 
      finally 
      { 
       UpdateStatus(); 

       // Check if template has been created. 
       switch (Enroller.TemplateStatus) 
       { 
        case DPFP.Processing.Enrollment.Status.Ready: // report success and stop capturing 
         OnTemplate(Enroller.Template); 

         //byte[] byted; 
         //byted = Enroller.Template.Bytes; 

         MemoryStream fingerprintData = new MemoryStream(); 
         Enroller.Template.Serialize(fingerprintData); 
         fingerprintData.Position = 0; 
         BinaryReader br = new BinaryReader(fingerprintData); 
         Byte[] bytes = br.ReadBytes((Int32)Enroller.Template.Bytes.Length); 

         //Insert the file into database 
         SqlConnection cn = new SqlConnection(@"Data Source=(LocalDB)\MSSQLLocalDB; 
         AttachDbFilename=c:\Users\Gabriel\Documents\Visual Studio 2015\Projects\Projeto_Fisioativa_Desktop\Projeto_Fisioativa_Desktop2\Bd_Fisio_Desktop.mdf; 
         Integrated Security=True; 
         Connect Timeout=30;"); 
         SqlCommand cmd; 

         if (result.Count != 0) 
         { 
          cmd = new SqlCommand("UPDATE Biometrias set biometria = @biometria, id_usuario = @id_usuario ", cn); 
          cmd.Parameters.Add("biometria", SqlDbType.Binary).Value = bytes; 
          cmd.Parameters.Add("id_usuario", SqlDbType.Int).Value = id; 
         } 
         else 
         { 
          cmd = new SqlCommand("INSERT INTO Biometrias VALUES(@biometria, @id_usuario)", cn); 
          cmd.Parameters.Add("biometria", SqlDbType.Binary).Value = bytes; 
          cmd.Parameters.Add("id_usuario", SqlDbType.Int).Value = 1; 
         } 



         cn.Open(); 
         cmd.ExecuteNonQuery(); 
         cn.Close(); 

         SetPrompt("Click Close, and then click Fingerprint Verification."); 
         Stop(); 
         break; 

        case DPFP.Processing.Enrollment.Status.Failed: // report failure and restart capturing 
         Enroller.Clear(); 
         Stop(); 
         UpdateStatus(); 
         OnTemplate(null); 
         Start(); 
         break; 
       } 
      } 
    } 

Aqui faço busco os dados do banco e faço a comparação

protected override void Process(DPFP.Sample Sample) 
    { 
     SqlConnection conn = new SqlConnection("Your connection string"); 
     conn.Open(); 
     SqlCommand cmd = new SqlCommand("select * from Biometrias", conn); 
     SqlDataAdapter sd = new SqlDataAdapter(cmd); 
     DataTable dt = new DataTable(); 
     sd.Fill(dt); 

     foreach (DataRow dr in dt.Rows) 
     { 
      byte[] _img = (byte[])dr["biometria"]; 
      MemoryStream ms = new MemoryStream(_img); 

      DPFP.Template Template = new DPFP.Template(); 
      Template.DeSerialize(ms); 
      DPFP.Verification.Verification Verificator = new DPFP.Verification.Verification(); 

      base.Process(Sample); 

      DPFP.FeatureSet features = ExtractFeatures(Sample, DPFP.Processing.DataPurpose.Verification); 
      if (features != null) 
      { 
       DPFP.Verification.Verification.Result result = new DPFP.Verification.Verification.Result(); 
       Verificator.Verify(features, Template, ref result); 
       UpdateStatus(result.FARAchieved); 
       if (result.Verified) 
        MakeReport("The fingerprint was VERIFIED."); 
       else 
        MakeReport("The fingerprint was NOT VERIFIED."); 
      } 
     } 
    }