private void MatchFaces()
{
try
{
using (NImage frame = _camera.GetFrame())
{
if (frame == null)
{
return;
}
using (NGrayscaleImage grayscaleImage = frame.ToGrayscale())
{
NleFace[] faces = _extractor.DetectFaces(grayscaleImage);
if (faces.Length <= 0)
return;
NleFace face = faces[0];
NleDetectionDetails detectionDetails = _extractor.DetectFacialFeatures(grayscaleImage, face);
NleExtractionStatus extractionStatus;
NLTemplate template = _extractor.ExtractUsingDetails(grayscaleImage, detectionDetails, out extractionStatus);
if (extractionStatus == NleExtractionStatus.TemplateCreated)
{
_template = template.Save();
}
}
}
if (_template != null && _templates.Length > 0)
{
try
{
DataTable dt = new DataTable("tblScore");
dt.Columns.Add("colTemplate", System.Type.GetType("System.String"));
dt.Columns.Add("colScore", System.Type.GetType("System.Int32"));
_matcher.IdentifyStart(_template);
for (int i = 0; i < _templates.Length; ++i)
{
int score = _matcher.IdentifyNext(_templates[i]);
DataRow dr = dt.NewRow();
dr["colTemplate"] = _templatesNames[i];
dr["colScore"] = score;
dt.Rows.Add(dr);
}
dt.DefaultView.Sort = "colScore DESC";
DataTable dtTemp = dt.DefaultView.ToTable();
listViewEx1.Items.Clear();
listViewEx1.Sorting = SortOrder.None;
for (int row = 0; row < 10; row++)
{
listViewEx1.Items.Add(new ListViewItem(new string[] { dtTemp.Rows[row][0].ToString().Replace(".dat", ""), dtTemp.Rows[row][1].ToString() }));
}
PictureBox pic = new PictureBox();
pic.Image = NImage.FromFile(Application.StartupPath + "\\Pictures\\" + dtTemp.Rows[0][0].ToString().Replace(".dat", "") + ".jpg").ToBitmap();
pic.Width = pic.Image.Width;
pic.Height = pic.Image.Height;
faceHistory.Add(pic);
UpdatePanel(null, null, NleExtractionStatus.None);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
_matcher.IdentifyEnd();
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
private void BuildTemplates()
{
try
{
using (NImage frame = _camera.GetFrame())
{
if (frame == null)
{
return;
}
using (NGrayscaleImage grayscale = frame.ToGrayscale())
{
strDate = DateTime.Now.Date.ToShortDateString().Replace("/", "");
NleFace[] faces = _extractor.DetectFaces(grayscale);
Rectangle imgRect = new Rectangle();
for (int ii = 0; ii < faces.Length; ii++)
{
NleFace face = faces[ii];
NleDetectionDetails detectionDetails = _extractor.DetectFacialFeatures(grayscale, face);
NleExtractionStatus extractionStatus;
NLTemplate template = _extractor.ExtractUsingDetails(grayscale, detectionDetails, out extractionStatus);
if (extractionStatus == NleExtractionStatus.TemplateCreated)
{
i = i + 1;
string FileName = Application.StartupPath + "\\Pictures\\" + strDate + i.ToString() + ".jpg";
imgRect.X = detectionDetails.Face.Rectangle.X; //detectionDetails.Face.Confidence
imgRect.Y = detectionDetails.Face.Rectangle.Y;
imgRect.Width = detectionDetails.Face.Rectangle.Width;
imgRect.Height = detectionDetails.Face.Rectangle.Height;
Bitmap img = frame.ToBitmap().Clone(imgRect, System.Drawing.Imaging.PixelFormat.DontCare); //截取人脸图像
img.Save(FileName);
string strFileName = Path.GetFileNameWithoutExtension(FileName);
string strTemplate = Application.StartupPath + "\\Templates\\" + strFileName + ".dat";
listViewEx1.Items.Add(new ListViewItem(new string[] { strFileName, "0" }));
File.WriteAllBytes(strTemplate, template.Save().ToByteArray());
PictureBox pic = new PictureBox();
pic.Image = img;
pic.Width = pic.Image.Width;
pic.Height = pic.Image.Height;
faceHistory.Add(pic);
}
}
UpdatePanel();
}
}
}
catch(Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
