private int GetImageQuality(NGrayscaleImage image, Label lb)
{
NGrayscaleImage resultImage = (NGrayscaleImage)image.Clone();
try
{
NfeExtractionStatus extractionStatus;
template = Data.NFExtractor.Extract(resultImage, NFPosition.Unknown, NFImpressionType.LiveScanPlain, out extractionStatus);
if (extractionStatus != NfeExtractionStatus.TemplateCreated)
{
lb.Text = string.Format("Q: {0:P0}", 0);
lb.ForeColor = Color.Red;
return(0);
}
}
catch (Exception)
{
lb.Text = string.Format("Q: {0:P0}", 0);
lb.ForeColor = Color.Red;
return(0);
}
this.template = (NFRecord)template.Clone();
int i = 0;
if (template != null)
{
i = Helpers.QualityToPercent(template.Quality);
lb.Text = string.Format("Q: {0:P0}", i / 100.0);
if (i > 80)
{
lb.ForeColor = Color.GreenYellow;
}
else if (i > 50)
{
lb.ForeColor = Color.Orange;
}
else
{
lb.ForeColor = Color.Red;
}
}
else
{
lb.Text = string.Format("Q: {0:P0}", 0);
lb.ForeColor = Color.Red;
}
return(i);
}
//public bool match(byte[] galleryTemplate)
public bool match(ArrayList fingerList, byte[][] galleryTemplate)
{
//bool retcode = false;
bool matched = true;
bool matchMethod1 = false;
if (matchMethod1)
{
_biometricClient.MatchingWithDetails = true;
_biometricClient.FingersMatchingSpeed = NMatchingSpeed.High;
_biometricClient.FingersQualityThreshold = 48;
int threshold = 48;
var template = new NFTemplate();
foreach (string finger in fingerList)
{
FingerListEnum f = (FingerListEnum)Enum.Parse(typeof(FingerListEnum), finger);
if (galleryTemplate[(int)f] != null && (galleryTemplate[(int)f]).Length != 0)
{
var record = new NFRecord(galleryTemplate[(int)f]);
if (record.Position == NFPosition.Unknown)
record.Position = getFingerPositionByTag(f.ToString());
template.Records.Add((NFRecord)record.Clone());
}
}
if (template == null)
throw new Exception("Gallery template is null");
using (var gallerySubject = NSubject.FromMemory(template.Save().ToArray()))
{
if (gallerySubject == null)
throw new Exception("Gallery template is null");
var status = _biometricClient.Verify(_probeSubject, gallerySubject);
if (status == NBiometricStatus.Ok)
{
foreach (var matchingResult in _probeSubject.MatchingResults)
{
//int fsc = matchingResult.MatchingDetails.FingersScore;
foreach (var finger in matchingResult.MatchingDetails.Fingers)
{
if (threshold > finger.Score)
{
matched = false;
break;
}
}
if (!matched)
break;
}
} else
matched = false;
}
}
else
{
var template = new NFTemplate();
foreach (string finger in fingerList)
{
FingerListEnum f = (FingerListEnum)Enum.Parse(typeof(FingerListEnum), finger);
if (galleryTemplate[(int)f] != null && (galleryTemplate[(int)f]).Length != 0)
{
var record = new NFRecord(galleryTemplate[(int)f]);
if (record.Position == NFPosition.Unknown)
record.Position = getFingerPositionByTag(f.ToString());
template.Records.Add((NFRecord)record.Clone());
using (var subject = NSubject.FromMemory(template.Save().ToArray()))
{
var status = _biometricClient.Verify(_probeSubject, subject);
if (status != NBiometricStatus.Ok)
{
matched = false;
break;
}
}
}
else
{
matched = false;
break;
}
}
}
//var template = new NFTemplate();
//foreach (string finger in _fingerList)
//{
// FingerListEnum f = (FingerListEnum)Enum.Parse(typeof(FingerListEnum), finger);
// if (galleryTemplate[(int)f] != null && (galleryTemplate[(int)f]).Length != 0)
// {
// var record = new NFRecord(galleryTemplate[(int)f]);
// if (record.Position == NFPosition.Unknown)
// record.Position = getFingerPositionByTag(f.ToString());
// template.Records.Add((NFRecord)record.Clone());
// //matched = matcher.match(buffer[(int)f]);
// //if (matched)
// //{
// // numOfMatches++;
// //}
// }
//}
//if (template == null)
// throw new Exception("Gallery template is null");
//NSubject gallerySubject = NSubject.FromMemory(template.Save().ToArray());
//if (gallerySubject == null)
// throw new Exception("Gallery template is null");
//var status = _biometricClient.Verify(_probeSubject, gallerySubject);
//if (status == NBiometricStatus.Ok)
// retcode = true;
return matched;
}
private void OnImage(NGrayscaleImage image)
{
clearView();
if (nfView1.Image == null)
{
nfView1.Image = image.ToBitmap();
}
NGrayscaleImage resultImage = (NGrayscaleImage)image.Clone();
try
{
NfeExtractionStatus extractionStatus;
template = Data.NFExtractor.Extract(resultImage, NFPosition.Unknown, NFImpressionType.LiveScanPlain, out extractionStatus);
if (extractionStatus != NfeExtractionStatus.TemplateCreated)
{
string text = string.Format("Extraction failed: {0}", extractionStatus.ToString());
ShowErrorMessage(text);
LogLine(text, true);
//LogLine("Waiting for image...", true);
pictureBox2.Image = Properties.Resources.redcross;
// MessageBox.Show(text, Text, MessageBoxButtons.OK, MessageBoxIcon.Error);
// sw.Stop();
//stopProgressBar();
//UseWaitCursor = false;
return;
}
}
catch (Exception e)
{
string text = string.Format("Extraction error: {0}", e.Message);
ShowErrorMessage(text);
LogLine(text, true);
pictureBox2.Image = Properties.Resources.redcross;
return;
}
finally
{
//WaitingForImageToScan();
//stopProgressBar(); !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
}
Bitmap bitmap;
using (NImage ri = NImages.GetGrayscaleColorWrapper(resultImage, resultImageMinColor, resultImageMaxColor))
{
bitmap = ri.ToBitmap();
}
this.template = (NFRecord)template.Clone();
nfView2.ResultImage = bitmap;
if (nfView2.Template != null)
{
nfView2.Template.Dispose();
}
nfView2.Template = this.template;
if (template == null)
{
ResourceManager rm = new ResourceManager("PSCBioVerification.Form1", this.GetType().Assembly);
string text = rm.GetString("msgFingerprintImageIsOfLowQuality"); // "Fingerprint image is of low quality"
ShowErrorMessage(text);
LogLine(text, true);
pictureBox2.Image = Properties.Resources.redcross;
//MessageBox.Show(text, Text, MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
LogLine("Template extracted{0}. G: {1}. Size: {2}", true,
Data.NFExtractor.UseQuality ? string.Format(". Quality: {0:P0}", Helpers.QualityToPercent(template.Quality) / 100.0) : null,
template.G, Data.SizeToString(template.Save().Length));
ShowStatusMessage(String.Format("Template extracted{0}. G: {1}. Size: {2}", true,
Data.NFExtractor.UseQuality ? string.Format(". Quality: {0:P0}", Helpers.QualityToPercent(template.Quality) / 100.0) : null,
template.G, Data.SizeToString(template.Save().Length)));
switch (mode)
{
case ProgramMode.Enroll:
doEnroll();
nfView2.Zoom = 1F;
break;
case ProgramMode.Verify:
doVerify();
nfView2.Zoom = 0.5F;
break;
}
WaitingForImageToScan();
}