public IActionResult RecordPost(int classID, int roomID, int time)
{
List <StudentWithImageViewModel> students = null;
if (time != 0)
{
Record rec = _context.Records.Where(r => r.ID == time).First();
List <Record> records = _context.Records.Where(record => record.Time.Year == rec.Time.Year && record.Time.Month == rec.Time.Month && record.Time.Day == rec.Time.Day && record.Time.Hour == rec.Time.Hour && record.Time.Minute == rec.Time.Minute && record.Time.Second == rec.Time.Second).ToList();
students = new List <StudentWithImageViewModel>();
foreach (var record in records)
{
User student = _context.Users.Where(s => s.ID == record.UserID).First();
StudentWithImageViewModel studentRecord = new StudentWithImageViewModel();
studentRecord.Student = student;
studentRecord.Image = record.Image;
students.Add(studentRecord);
}
}
string loggedEmail = HttpContext.Session.GetString("email");
User loggedUser = _context.Users.Where(student => student.Email == loggedEmail).First();
RecordViewModel viewData = new RecordViewModel();
viewData.Rooms = GetRooms();
viewData.Classes = GetClasses(loggedUser.ID);
List <Record> allRecords = _context.Records.Where(record => record.ClassID == classID && record.RoomID == roomID).ToList();
List <Record> viewRecords = allRecords.GroupBy(x => x.Time.Ticks).Select(x => x.FirstOrDefault()).OrderByDescending(y => y.Time).ToList();
viewData.Records = viewRecords;
ViewBag.Students = students;
return(View(viewData));
}
/**
* Recognizes students from sent image path
*/
public List <StudentWithImageViewModel> RecognizeStudents(string imagePath)
{
List <StudentWithImageViewModel> recognizedStudents = new List <StudentWithImageViewModel>();
// get student encodings
List <UserImages> students = _context.UserImages.ToList();
List <FaceEncoding> knownStudents = new List <FaceEncoding>();
foreach (UserImages student in students)
{
var bf = new BinaryFormatter();
using (var ms2 = new MemoryStream(student.Encoding))
{
var loaded = bf.Deserialize(ms2) as FaceEncoding;
knownStudents.Add(loaded);
}
}
IEnumerable <FaceEncoding> knownEncodings = knownStudents;
// match known encodings with loaded ones
using (FaceRecognition fr = FaceRecognition.Create(modelDirectory))
{
using (FaceRecognitionDotNet.Image image = FaceRecognition.LoadImageFile(imagePath))
{
IEnumerable <Location> locations = fr.FaceLocations(image);
List <FaceEncoding> encodings = fr.FaceEncodings(image, locations).ToList();
for (int j = 0; j < encodings.Count(); j++)
{
List <bool> matches = FaceRecognition.CompareFaces(knownEncodings, encodings[j], tolerance).ToList();
if (matches.Contains(true))
{
for (int i = 0; i < matches.Count(); i++)
{
if (matches[i])
{
StudentWithImageViewModel student = new StudentWithImageViewModel();
Bitmap face = Crop(imagePath, locations.ToList()[j].Bottom, locations.ToList()[j].Left, locations.ToList()[j].Right, locations.ToList()[j].Top);
ImageConverter converter = new ImageConverter();
student.Image = (byte[])converter.ConvertTo(face, typeof(byte[]));
student.Student = _context.Users.Where(student => student.ID == students[i].UserID).First();
recognizedStudents.Add(student);
break;
}
}
}
}
}
}
return(recognizedStudents);
}
