public static Image <Bgr, Byte> RecognizeImage(Image img)
{
if (img == null)
{
return(null);
}
using (var ImageFrame = new Image <Bgr, Byte>(new Bitmap(img)))
{
var _recognizerEngine = new RecognizerEngine(_databasePath, _trainerDataPath);
_recognizerEngine.TrainRecognizer();
if (ImageFrame == null)
{
return(null);
}
var grayframe = ImageFrame.Convert <Gray, byte>();
var faces = _cascadeClassifier.DetectMultiScale(grayframe, 1.1, 10, Size.Empty); //the actual face detection happens here
//int faceIndex = 1;
foreach (var face in faces)
{
ImageFrame.Draw(face, new Bgr(Color.BurlyWood), 3); //the detected face(s) is highlighted here using a box that is drawn around it/them
int predictedUserId;
Bitmap map = ImageFrame.Copy(face).Bitmap;
try
{
predictedUserId = _recognizerEngine.RecognizeUser(new Image <Gray, byte>(map));
//Debug.WriteLine(predictedUserId);
}
catch { predictedUserId = -1; }
if (predictedUserId == -1)
{
continue;
}
else
{
//proceed to documents library
IDataStoreAccess dataStore = new DataStoreAccess(_databasePath);
var username = dataStore.GetUsername(predictedUserId);
if (username != String.Empty)
{
ImageFrame.Draw(username, new Point(face.X, face.Y), Emgu.CV.CvEnum.FontFace.HersheyPlain, 2, new Bgr(Color.Red), 2);
}
}
}
return(ImageFrame.Copy());
}
}
public static Image <Bgr, Byte> RecognizeImage(Image img, Label msgout = null)
{
if (img == null)
{
return(null);
}
using (var ImageFrame = new Image <Bgr, Byte>(new Bitmap(img)))
{
var _recognizerEngine = new RecognizerEngine(_databasePath, _trainerDataPath);
_recognizerEngine.TrainRecognizer();
if (ImageFrame == null)
{
System.Windows.Forms.MessageBox.Show("Nenhuma imagem fornecida.");
}
var grayframe = ImageFrame.Convert <Gray, byte>();
var faces = _cascadeClassifier.DetectMultiScale(grayframe, 1.1, 10, Size.Empty); //the actual face detection happens here
if (faces.Length == 0)
{
System.Windows.Forms.MessageBox.Show("Ops! Nenhum rosto foi identifcado.\n\nCarrege uma imagem com boa definição, tirada de ângulo frontal.");
}
//int faceIndex = 1;
var face = faces[0];
ImageFrame.Draw(face, new Bgr(Color.BurlyWood), 3); //the detected face(s) is highlighted here using a box that is drawn around it/them
int predictedUserId;
Bitmap map = ImageFrame.Copy(face).Bitmap;
try
{
predictedUserId = _recognizerEngine.RecognizeUser(new Image <Gray, byte>(map));
//Debug.WriteLine(predictedUserId);
}
catch { predictedUserId = -1; }
var username = "";
if (predictedUserId != -1)
{
//proceed to documents library
IDataStoreAccess dataStore = new DataStoreAccess(_databasePath);
username = dataStore.GetUsername(predictedUserId);
}
if (predictedUserId == -1 || username.Length == 0)
{
msgout.Text = "Atenção: usuário não identificado.";
msgout.ForeColor = System.Drawing.Color.Red;
}
else
{
msgout.Text = "Olá, " + username + "! Seu acesso está autorizado. :)";
msgout.ForeColor = System.Drawing.Color.Blue;
ImageFrame.Draw(username, new Point(face.X, face.Y), Emgu.CV.CvEnum.FontFace.HersheyPlain, 2, new Bgr(Color.Red), 2);
}
return(ImageFrame.Copy());
}
}