public ApiResult <RollCallReponseModel> RollCallByImageUpload()
{
var r = new ApiResult <RollCallReponseModel>();
RollCallModel rollCallModel = new RollCallModel();
var httpRequest = System.Web.HttpContext.Current.Request;
if (httpRequest.Files.Count < 1)
{
r.Messages.Add("Vui lòng upload ảnh");
}
else if (httpRequest.Files.Count > 1)
{
r.Messages.Add("Vui lòng chỉ uplaod 1 ảnh duy nhât");
}
else
{
HttpPostedFile file = httpRequest.Files[0];
byte[] thePictureAsBytes = new byte[file.ContentLength];
using (BinaryReader theReader = new BinaryReader(file.InputStream))
{
thePictureAsBytes = theReader.ReadBytes(file.ContentLength);
}
rollCallModel.ClassScheduleId = Int32.Parse(httpRequest.Files.AllKeys[0]);
rollCallModel.Base64Image = Convert.ToBase64String(thePictureAsBytes);
r = RCSService.RollCall(rollCallModel);
}
return(r);
}
public ApiResult <RollCallReponseModel> RollCall(RollCallModel model)
{
return(RCSService.RollCall(model));
}
public ApiResult <RollCallReponseModel> RollCall(RollCallModel model)
{
var r = new ApiResult <RollCallReponseModel>();
r.Data = new RollCallReponseModel();
r.Data.Base64Image = model.Base64Image;
var rollCallData = new ApiResult <List <RollCall> >();
var classSchedule = RCSContext.ClassSchedules.Where(cs => cs.Id == model.ClassScheduleId).FirstOrDefault();
//check thông tin lớp học
if (classSchedule == null)
{
r.Messages.Add("Lớp học không tồn tại.");
return(r);
}
if (classSchedule.Status == (int)EClassStatus.Schedule)
{
r.Messages.Add("Lớp học chưa mở.");
return(r);
}
if (classSchedule.Status == (int)EClassStatus.Closed)
{
r.Messages.Add("Lớp học đã kết thúc");
return(r);
}
var imageGray = model.Base64Image.base64ToImageGray();
var image = model.Base64Image.base64ToImage();
var bitmap = new Bitmap(image);
var bitmapResponse = new Bitmap(bitmap);
imageGray._EqualizeHist();
var rectangles = DetectService.DetectFaceRollCall(imageGray);
if (rectangles.Count() == 0)
{
r.Messages.Add("Không có sinh viên nào trong ảnh.");
return(r);
}
var classId = RCSContext.ClassSchedules.Where(cs => cs.Id == model.ClassScheduleId).FirstOrDefault().ClassId;
var studyings = RCSContext.Studyings.Where(st => st.ClassId == classId).ToList();
var newRollCalls = new List <RollCall>();
var oldRollCalls = new List <RollCall>();
//Detect khuôn mặt
rectangles.ForEach(rec =>
{
var face = bitmap.cropAtRect(rec);
var faceGray = new Image <Gray, byte>(face);
var studentId = DetectService.RecognizeFace(faceGray);
if (studentId == -1)
{
var faceGrayFlip = faceGray.Flip(FlipType.Horizontal);
studentId = DetectService.RecognizeFace(faceGrayFlip);
}
if (studentId != -1)
{
if (studyings.Any(st => st.StudentId == studentId))
{
bitmapResponse = drawFaceAndNoteOnBitmap(bitmapResponse, rec, studentId.ToString(), Color.Green);
var rc = RCSContext.RollCalls.Where(i => i.StudentId == studentId && i.ClassScheduleId == model.ClassScheduleId).FirstOrDefault();
var fileData = new FileData
{
Data = face.bitmapToByteArr(),
};
var fileAttachment = new FileAttachment
{
CreateDate = DateTime.Now,
Height = face.Height,
Width = face.Width,
Extension = "jpg",
Type = (int)EFileType.ImageJPG,
Name = Guid.NewGuid().ToString(),
FileData = fileData
};
if (rc == null)
{
var rollCall = new RollCall();
rollCall = new RollCall
{
ClassScheduleId = model.ClassScheduleId,
StudentId = studentId,
CreatedDate = DateTime.Now,
Type = (int)ERollCallType.Auto,
IsActive = true
};
newRollCalls.Add(rollCall);
}
else
{
rc.IsActive = true;
rc.CreatedDate = DateTime.Now;
rc.FileAttachment = fileAttachment;
oldRollCalls.Add(rc);
}
}
}
else
{
bitmapResponse = drawFaceAndNoteOnBitmap(bitmapResponse, rec, "unknown", Color.Red);
}
});
if (newRollCalls.Count == 0 && oldRollCalls.Count == 0)
{
r.Messages.Add("Các sinh viên không thuộc lớp này.");
r.Data.Base64Image = Convert.ToBase64String(bitmapResponse.bitmapToByteArr());
return(r);
}
RCSContext.RollCalls.AddRange(newRollCalls);
try
{
RCSContext.SaveChanges();
}
catch (Exception e) { r.Messages.Add(e.Message); return(r); }
newRollCalls.AddRange(oldRollCalls);
newRollCalls.ForEach(i =>
{
i.ClassSchedule.RollCalls = null;
i.FileAttachment = null;
i.Student = null;
i.Image = null;
});
r.Messages.Add("Điểm danh thành công.");
r.IsSuccess = true;
r.Data.Base64Image = Convert.ToBase64String(bitmapResponse.bitmapToByteArr());
r.Data.RollCalls = newRollCalls;
return(r);
}
