Device : Digital Persona u.are.u 4500
注册时，我以image格式将数据保存在sql数据库中（sql数据类型为图像）它工作正常，我的数据已正确保存在数据库中，但是现在当我在验证期间验证数据时，它给出了异常
hresult : 0xffff.
这是我用于验证的 C# 代码
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();
我已经这样做了，它就像魅力一样！
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;
}
}
Integração com Digital Persona 4500 Fingerprint
Aqui faço o Insert dos dados
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:UsersGabrielDocumentsVisual Studio 2015ProjectsProjeto_Fisioativa_DesktopProjeto_Fisioativa_Desktop2Bd_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.");
}
}
}
if (Sql.State == ConnectionState.Closed)
{
Sql.Open();
}
SqlCommand a1 = new SqlCommand("Select FingerPrint,[REF NO]
from Members", Sql);
SqlDataReader SDR = a1.ExecuteReader();
while (SDR.Read())
{
ret = fpInstance.Match(CapTmp, (byte[])(SDR[0]));
if (ret > 30)
{
a = SDR[1].ToString();
break;
}
}
我这样做了，希望这个帮助（完整的工作解决方案） 数字角色一键式 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