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);
}
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();
}