public ResponseMessage Post()
{
float thSimilarity = 0.8f;
if (!GlobalVar.bInitialized)
{
string curPath = HttpContext.Current.Server.MapPath("..") + "\\fr.dat";
if (FaceEngine.InitialEngine((float)15.0, (float)100000.0, curPath))
{
GlobalVar.bInitialized = true;
}
}
//photo processing
String userMainPhoto = HttpContext.Current.Request.Params["MainPhoto"];
string strReturnUrl = HttpContext.Current.Request.Params["ReturnUrl"];
string strFrom = HttpContext.Current.Request.Params["From"];
userMainPhoto = RemoveEXIFRotation(userMainPhoto);
userMainPhoto = userMainPhoto.Replace("data:image/jpg;base64,", "");
byte[] bufferMainPhoto = Convert.FromBase64String(userMainPhoto);
MemoryStream memStream = new MemoryStream();
memStream.Write(bufferMainPhoto, 0, bufferMainPhoto.Length);
memStream.Flush();
memStream.Seek(0, SeekOrigin.Begin);
BitmapEx bmpMainPhoto = new BitmapEx(memStream);
if (bmpMainPhoto.GetWidth() == 0)
{
return(makeRedirectResponse(new ResponseMessage(false, "Invalid Photo Error!"), strReturnUrl, strFrom));
}
// detect face
Int32 nFaceCount = FaceEngine.GetFaceCount(bmpMainPhoto.GetBuffer(), bmpMainPhoto.GetWidth(), bmpMainPhoto.GetHeight());
if (nFaceCount <= 0)
{
FaceEngine.RemoveAllTemplate();
return(makeRedirectResponse(new ResponseMessage(false, "Face Detection Error! Could not find any face."), strReturnUrl, strFrom));
}
else if (nFaceCount > 1)
{
FaceEngine.RemoveAllTemplate();
return(makeRedirectResponse(new ResponseMessage(false, "Too many faces! Please make sure that there's only 1 face."), strReturnUrl, strFrom));
}
//get face region
FaceRectInfo faceRect = new FaceRectInfo();
FaceEngine.GetDetectFaces(0, ref faceRect);
//detect landmarks
SFaceLandmark landmarkPoints = new SFaceLandmark();
FaceEngine.GetDetectPoints(0, ref landmarkPoints);
FaceEngine.RemoveAllTemplate();
//extract facial feature
float[] pFeature = new float[2048];
FaceEngine.GetFeatures(bmpMainPhoto.GetBuffer(), bmpMainPhoto.GetWidth(), bmpMainPhoto.GetHeight(), 3, ref landmarkPoints, pFeature);
//comparing with enrolled faces
bool bFaceExisting = false;
string sql = "SELECT FeatureData FROM UserData";
SqlConnection dbConn = new SqlConnection(GlobalVar.sqlDatabaseAccessString);
SqlCommand dbComm = new SqlCommand(sql, dbConn);
try
{
dbConn.Open();
SqlDataReader dbRead = dbComm.ExecuteReader();
while (dbRead.Read())
{
string strJointEnrolledFeatureData = dbRead.GetString(0);
string[] strEnrolledFeatureDatas = strJointEnrolledFeatureData.Split('|');
//compare with main feature first
float[] pEnrolledMainFeature = Array.ConvertAll(strEnrolledFeatureDatas[0].Split(','), float.Parse);
float similarity = FaceEngine.GetSimilarity(pFeature, pEnrolledMainFeature);
if (similarity < thSimilarity)
{
//compare with all features
float overallSimilarity = similarity;
for (int i = 0; i < strEnrolledFeatureDatas.Length - 1; i++)
{
float[] pEnrolledSubFeature = Array.ConvertAll(strEnrolledFeatureDatas[i + 1].Split(','), float.Parse);
overallSimilarity += FaceEngine.GetSimilarity(pFeature, pEnrolledSubFeature);
}
overallSimilarity /= strEnrolledFeatureDatas.Length;
if (overallSimilarity > thSimilarity)
{
bFaceExisting = true;
break;
}
}
else
{
bFaceExisting = true;
break;
}
}
dbRead.Close();
}
catch (Exception e)
{
return(makeRedirectResponse(new ResponseMessage(false, "DB error occured while comparing with enrolled faces!"), strReturnUrl, strFrom));
}
finally
{
dbConn.Close();
}
if (bFaceExisting)
{
return(makeRedirectResponse(new ResponseMessage(false, "There's already the same face existing!"), strReturnUrl, strFrom));
}
//signing up
String strFirstName = HttpContext.Current.Request.Params["FirstName"];
String userEmail = HttpContext.Current.Request.Params["UserEmail"];
String strFeatureData = string.Join(",", pFeature);
byte[] bufferUserBlob = null;
if (HttpContext.Current.Request.Files.AllKeys.Any())
{
for (int i = 0; i < HttpContext.Current.Request.Files.Count; i++)
{
long length = HttpContext.Current.Request.Files[i].InputStream.Length;
bufferUserBlob = new byte[length];
HttpContext.Current.Request.Files[i].InputStream.Read(bufferUserBlob, 0, (int)length);
if (HttpContext.Current.Request.Files[i].ContentType == "image/jpeg")
{
//calc features from subPhotos & concatenate them
BitmapEx bmpSubPhoto = new BitmapEx(HttpContext.Current.Request.Files[i].InputStream);
if (bmpSubPhoto.GetWidth() == 0)
{
continue;
}
nFaceCount = FaceEngine.GetFaceCount(bmpSubPhoto.GetBuffer(), bmpSubPhoto.GetWidth(), bmpSubPhoto.GetHeight());
if (nFaceCount == 1)
{
FaceEngine.GetDetectFaces(0, ref faceRect);
FaceEngine.GetDetectPoints(0, ref landmarkPoints);
FaceEngine.GetFeatures(bmpSubPhoto.GetBuffer(), bmpSubPhoto.GetWidth(), bmpSubPhoto.GetHeight(), 3, ref landmarkPoints, pFeature);
String strSubFeatureData = string.Join(",", pFeature);
strFeatureData = strFeatureData + "|" + strSubFeatureData;
}
FaceEngine.RemoveAllTemplate();
}
}
}
string strQuery = "INSERT INTO UserData (UserName, UserEmail, UserPhoto, UserVideo, FeatureData) ";
strQuery += "VALUES (@UserName, @UserEmail, @UserPhoto, @UserVideo, @FeatureData)";
SqlCommand cmd = new SqlCommand(strQuery);
cmd.Parameters.Add("@UserName", SqlDbType.NChar).Value = strFirstName;
cmd.Parameters.Add("@UserEmail", SqlDbType.NVarChar).Value = userEmail;
cmd.Parameters.Add("@UserPhoto", SqlDbType.Image).Value = bmpMainPhoto.GetBuffer();
cmd.Parameters.Add("@UserVideo", SqlDbType.Image).Value = bufferUserBlob;
cmd.Parameters.Add("@FeatureData", SqlDbType.Text).Value = strFeatureData;
SqlConnection sqlDbConnection = new SqlConnection(GlobalVar.sqlDatabaseAccessString);
cmd.CommandType = CommandType.Text;
cmd.Connection = sqlDbConnection;
try
{
sqlDbConnection.Open();
cmd.ExecuteNonQuery();
}
catch (Exception ex)
{
var strMsg = ex.Message;
// Check whether it is a email
if (ex is SqlException)
{
SqlException exSql = (SqlException)ex;
if (exSql.Class == 14 && exSql.Number == 2627)
{
strMsg = "Email has already taken";
}
}
return(makeRedirectResponse(new ResponseMessage(false, strMsg), strReturnUrl, strFrom));
}
finally
{
sqlDbConnection.Close();
sqlDbConnection.Dispose();
}
// Succeeded
return(makeShopifyLoginResponse(userEmail, strReturnUrl, strFrom));
}
public static extern void GetDetectPoints(Int32 nFaceIndex, ref SFaceLandmark pLandmarkPoints);
public static extern bool GetFeatures(byte[] imgbuf, Int32 imgWidth, Int32 imgHeight, Int32 nChannels, ref SFaceLandmark pLandmarkPoints, float[] pFeature);
public ResponseMessage Post()
{
float thSimilarity = 0.8f;
if (!GlobalVar.bInitialized)
{
string curPath = HttpContext.Current.Server.MapPath("..") + "\\fr.dat";
if (FaceEngine.InitialEngine((float)15.0, (float)100000.0, curPath))
{
GlobalVar.bInitialized = true;
}
}
//user verification(name & face verification)
//name verification
String userName = HttpContext.Current.Request.Params["UserName"];
string strReturnUrl = HttpContext.Current.Request.Params["ReturnUrl"];
string strFrom = HttpContext.Current.Request.Params["From"];
string sqlQuery = "SELECT COUNT(*) FROM UserData WHERE UserName = '******'";
SqlConnection dbConn = new SqlConnection(GlobalVar.sqlDatabaseAccessString);
SqlCommand sqlCmd = new SqlCommand(sqlQuery, dbConn);
try
{
dbConn.Open();
Int32 count = Convert.ToInt32(sqlCmd.ExecuteScalar());
if (count == 0)
{
return(makeRedirectResponse(new ResponseMessage(false, "There's no user having this name!"), strReturnUrl, strFrom));
}
}
catch (Exception)
{
return(makeRedirectResponse(new ResponseMessage(false, "DB error occured while verification is being held!"), strReturnUrl, strFrom));
}
finally
{
dbConn.Close();
}
//face verfication
String userPhoto = HttpContext.Current.Request.Params["UserPhoto"];
userPhoto = RemoveEXIFRotation(userPhoto);
userPhoto = userPhoto.Replace("data:image/jpg;base64,", "");
byte[] img = Convert.FromBase64String(userPhoto);
MemoryStream memStream = new MemoryStream();
memStream.Write(img, 0, img.Length);
memStream.Flush();
memStream.Seek(0, SeekOrigin.Begin);
BitmapEx bmp = new BitmapEx(memStream);
if (bmp.GetWidth() == 0)
{
return(makeRedirectResponse(new ResponseMessage(false, "Invalid Photo Error!"), strReturnUrl, strFrom));
}
// detect face
Int32 nFaceCount = FaceEngine.GetFaceCount(bmp.GetBuffer(), bmp.GetWidth(), bmp.GetHeight());
if (nFaceCount <= 0)
{
FaceEngine.RemoveAllTemplate();
return(makeRedirectResponse(new ResponseMessage(false, "Face Detection Error! Could not find any face."), strReturnUrl, strFrom));
}
else if (nFaceCount > 1)
{
FaceEngine.RemoveAllTemplate();
return(makeRedirectResponse(new ResponseMessage(false, "Too many faces! Please make sure that there's only 1 face."), strReturnUrl, strFrom));
}
//get face region
FaceRectInfo faceRect = new FaceRectInfo();
FaceEngine.GetDetectFaces(0, ref faceRect);
//detect landmarks
SFaceLandmark landmarkPoints = new SFaceLandmark();
FaceEngine.GetDetectPoints(0, ref landmarkPoints);
FaceEngine.RemoveAllTemplate();
//extract facial feature
float[] pFeature = new float[2048];
FaceEngine.GetFeatures(bmp.GetBuffer(), bmp.GetWidth(), bmp.GetHeight(), 3, ref landmarkPoints, pFeature);
//comparing with enrolled faces
sqlCmd.Dispose();
dbConn.Dispose();
bool bFaceVerified = false;
string strUserEmail = "";
sqlQuery = "SELECT UserEmail, FeatureData FROM UserData WHERE UserName = '******'";
dbConn = new SqlConnection(GlobalVar.sqlDatabaseAccessString);
sqlCmd = new SqlCommand(sqlQuery, dbConn);
try
{
dbConn.Open();
SqlDataReader dbRead = sqlCmd.ExecuteReader();
while (dbRead.Read())
{
strUserEmail = dbRead.GetString(0);
string strJointEnrolledFeatureData = dbRead.GetString(1);
string[] strEnrolledFeatureDatas = strJointEnrolledFeatureData.Split('|');
float maxSimilarity = 0.0f;
for (int i = 0; i < strEnrolledFeatureDatas.Length; i++)
{
float[] pEnrolledSubFeature = Array.ConvertAll(strEnrolledFeatureDatas[i].Split(','), float.Parse);
float similarity = FaceEngine.GetSimilarity(pFeature, pEnrolledSubFeature);
if (maxSimilarity < similarity)
{
maxSimilarity = similarity;
}
}
if (maxSimilarity > thSimilarity)
{
bFaceVerified = true;
break;
}
}
dbRead.Close();
}
catch (Exception)
{
return(makeRedirectResponse(new ResponseMessage(false, "Error occured while verification is being held!"), strReturnUrl, strFrom));
}
finally
{
dbConn.Close();
}
if (!bFaceVerified)
{
return(makeRedirectResponse(new ResponseMessage(false, "Sorry, your face doesn't match with enrolled one!"), strReturnUrl, strFrom));
}
// Succeeded
return(makeShopifyLoginResponse(strUserEmail, strReturnUrl, strFrom));
}
