private bool MatchFaces(Bitmap bitmap)
{
var imageReceived = DetectFaceTrainer(new List <Bitmap> {
bitmap
});
if ((imageReceived == null) || (imageReceived.Count() == Decimal.Zero))
{
return(false);
}
LBPHFaceRecognizer.PredictionResult ER = recognizer.Predict(imageReceived[0]);
return(ER.Label > -1);
}
private void FrameProcedure(object sender, EventArgs e)
{
//A list of string defined at class level
_user.Add("");
//Resize the current image taken by camera and save into Bgr _frame
//_frame = _camera.QueryFrame().Resize(320, 244, Emgu.CV.CvEnum.INTER.CV_INTER_CUBIC);
_frame = _camera.QueryFrame().ToImage <Bgr, Byte>();
//Convert the image into gray scale
_grayFace = _frame.Convert <Gray, Byte>();
//Face detector, detects the face from gray scale image captured by the camera using a FaceDet xml with threshold values
var faceDetectedNow =
_faceDet.DetectMultiScale(
_grayFace,
1.1,
1,
new Size(30, 30),
new Size(200, 200));
//Everytime a face is detected by the camera
foreach (var f in faceDetectedNow)
{
//if(faceDetectedNow.Count() != 0)
//{
_t = _t + 1;
//f.rect (Bounding rectangle for the object (average rectangle of a group)
//_result is a gray scale image
//Convert the detected image into gray scale and resize it, then save it into _result
_result = _frame.Copy(f).Convert <Gray, Byte>().Resize(500, 500, Emgu.CV.CvEnum.Inter.Cubic);
//_frame (a Bgr image)
//Draw a rectangle(of detected image) on the frame with a specific color and thickness
_frame.Draw(f, new Bgr(Color.Red), 2);
//_traineImages is a list of images
// If there exist any previous training images then
if (LoadData._traineImages.Count != 0)
{
//======================recognizer=================================
//predicting result
LBPHFaceRecognizer.PredictionResult ER = LoadData.recog.Predict(_result);
int temp_result = ER.Label;
//int temp_result = LoadData.recog.Predict(_result).Label;
imageBox1.SizeMode = PictureBoxSizeMode.StretchImage;
imageBox1.Image = _result.Mat;
//Displaying predicted result on screen
//if ((temp_result != -1))
if ((temp_result != -1) && (ER.Distance < 55))
{
Console.Write("---> " + temp_result + " ");
_frame.Draw(
temp_result.ToString(),
new Point(f.X - 2, f.Y - 2),
FontFace.HersheyComplex,
1.1,
new Bgr(Color.LightGreen)
);
//check if attendance is already marked
//if yes then do nothing or display a message
//if no then mark attendance and put an entry into markedAttendance log
if (LoadData.markedAttendance.ToArray().Count() == 0)
{
//mark attendance
markAttendance(temp_result);
//========================add entry==============================
CheckInLog c1 = new CheckInLog();
c1.ID = temp_result;
c1.checkIn = DateTime.Now.AddMinutes(2);
LoadData.markedAttendance.Add(c1);
Console.WriteLine("first user added: " + c1.ID + " " + c1.checkIn);
}
else
{
bool found_flag = false;
foreach (CheckInLog C in LoadData.markedAttendance.ToArray())// checking if attendance is already marked or not and if user can mark again
{
Console.WriteLine("comparing " + C.ID + " WITH " + temp_result);
if (C.ID == temp_result)
{
Console.WriteLine("attendance already marked!!");
DateTime current = DateTime.Now;
if ((C.checkIn.TimeOfDay == current.TimeOfDay) || (C.checkIn.TimeOfDay < current.TimeOfDay))//greater or equal
{
Console.WriteLine("time is equal!!.. can mark attendance now");
//mark attendance
markAttendance(temp_result);
//========================add entry==============================
CheckInLog c1;
c1.ID = temp_result;
c1.checkIn = DateTime.Now.AddMinutes(2);
LoadData.markedAttendance.Add(c1);
found_flag = true;
Console.WriteLine("user second entry added: " + c1.ID + " " + c1.checkIn);
LoadData.markedAttendance.Remove(C);
}
else
{
Console.WriteLine("2 mins not passed!!.. can not mark attendance");
found_flag = true;
}
}
}
if (found_flag == false)
{// If the user if new i.e that no record was found in attendance log
//mark attendance
markAttendance(temp_result);
//========================add entry==============================
CheckInLog c1;
c1.ID = temp_result;
c1.checkIn = DateTime.Now.AddMinutes(2);
LoadData.markedAttendance.Add(c1);
Console.WriteLine("new user added: " + c1.ID + " " + c1.checkIn);
}
}
}
}
}
imgBoxCamera.Image = _frame;
}
