private void InitOcr(String path, String lang, OcrEngineMode mode)
{
try
{
if (_ocr != null)
{
_ocr.Dispose();
_ocr = null;
}
if (String.IsNullOrEmpty(path))
{
path = ".";
}
TesseractDownloadLangFile(path, lang);
TesseractDownloadLangFile(path, "osd"); //script orientation detection
String pathFinal = path.Length == 0 ||
path.Substring(path.Length - 1, 1).Equals(Path.DirectorySeparatorChar.ToString())
? path
: String.Format("{0}{1}", path, System.IO.Path.DirectorySeparatorChar);
_ocr = new Emgu.CV.OCR.Tesseract(pathFinal, lang, mode);
}
catch (System.Net.WebException e)
{
_ocr = null;
throw new Exception("Unable to download tesseract lang file. Please check internet connection.", e);
}
catch (Exception e)
{
_ocr = null;
}
}
private void TextRecogniser(Image image)
{
Emgu.CV.OCR.Tesseract tesseract = new Emgu.CV.OCR.Tesseract
(@"F:\Working Pack\c#\Scripter\Scripter\Templates\eng.traineddata", "eng",
OcrEngineMode.TesseractLstmCombined);
var tempImg = new Bitmap(image).ToImage <Gray, byte>();
tesseract.SetImage(tempImg);
tesseract.Recognize();
string response = tesseract.GetUTF8Text();
tesseract.Dispose();
}
//główne operacje na obrazie
public void ocr()
{
//otworzenie pliku
FileStream srcstream = new FileStream(pic_file, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
//stworzenie bitmapy
Bitmap source = new Bitmap(srcstream);
//zmiana ustawień webform
Panel1.Visible = false;
Image1.Dispose();
Label2.Text = "Processing...";
Panel3.Visible = true;
//Preperation code
Bitmap ext = source;
//AForge.Imaging.Filters.
//Przekształcenie obrazu na skalę odcieni szarości - testować dla obrazów o różnej kolorystyce(opracować system wyznaczania parametrów filtru na podstawie RGB zdjęcia)
AForge.Imaging.Filters.Grayscale grScl = new AForge.Imaging.Filters.Grayscale(0.2125, 0.0154, 0.0721 );
source = grScl.Apply(source);
//Zwiększenie kontrastu
AForge.Imaging.Filters.ContrastStretch conCor = new AForge.Imaging.Filters.ContrastStretch();
source = conCor.Apply(source);
//Wyostrzenie
AForge.Imaging.Filters.Sharpen shp = new AForge.Imaging.Filters.Sharpen();
source = shp.Apply(source);
//Segmentation code
bool procesed = false;
// Image2.Width = 350;
// Image2.Height = (int)((source.Height * 200) / source.Width);
try
{
Emgu.CV.Image<Bgr, Byte> to_rec = new Emgu.CV.Image<Bgr, byte>(source);
Do_ocr = new Tesseract("tessdata", "eng", Tesseract.OcrEngineMode.OEM_DEFAULT);
try
{
Do_ocr.Recognize<Bgr>(to_rec);
//recognizedText.Text = ocr.GetText();
PastOCRBox.Text = Do_ocr.GetText();
// StatusBox.Text = "Finished! Ready for next one...";
Do_ocr.Dispose();
to_rec.Dispose();
}
catch (Exception exp)
{
Label2.Text = "Recognition error! " + exp.Message;
Do_ocr.Dispose();
return;
}
}
catch (Exception exp)
{
Label2.Text = "OCR engine failed! " + exp.Message;
return;
}
//czyszczenie z plików tymczasowych
// source.Save("D:\\test.bmp");
// ext.Save("D:\\testcor.bmp");
source.Dispose();
srcstream.Close();
srcstream.Dispose();
//System.IO.File.Delete(pic_file);
System.IO.File.Delete(Server.MapPath("~/img/prev.bmp"));
System.IO.File.Delete(Server.MapPath("~/img/tmp.bmp"));
//przygotować wygląd strony po rozpoznawaniu
Panel3.Visible = false;
Label1.Visible = false;
Panel0.Visible = false;
Panel5.Visible = false;
Panel4.Visible = true;
}
private void server()
{
int port = 8001;
IPAddress ipAd = IPAddress.Parse(ip);
// use local m/c IP address, and
// use the same in the client
ASCIIEncoding asen = new ASCIIEncoding();
/* Initializes the Listener */
TcpListener myList = new TcpListener(IPAddress.Any, port);
Console.WriteLine("The server is running at port 8001...");
Console.WriteLine("The local End point is :" +
myList.LocalEndpoint);
/* Start Listeneting at the specified port */
byte[] b = new byte[2000000];
myList.Start();
while (!stoped)
{
char[] recived = new char[2000000];
Console.WriteLine("Waiting for a connection.....");
TcpClient s = myList.AcceptTcpClient();
Console.WriteLine("Connection accepted " +s.Client.RemoteEndPoint);
NetworkStream stream = s.GetStream();
var reader = new StreamReader(stream);
var k = stream.Read(b, 0, 2000000);
Console.WriteLine("Recieved...");
ImageConverter conv = new ImageConverter();
Bitmap rec = new Bitmap((Bitmap)conv.ConvertFrom(b));
Console.WriteLine("Recognicion...");
Tesseract ocr = new Tesseract("tessdata", "pol+eng", Tesseract.OcrEngineMode.OEM_DEFAULT);
ocr.Recognize<Bgr>(new Emgu.CV.Image<Bgr, Byte>(rec));
string to_send_str = ocr.GetText();
ocr.Dispose();
Console.Write(to_send_str + "\n");
stream.Write(asen.GetBytes(to_send_str),0,to_send_str.Length);
Console.WriteLine("\nSent Acknowledgement");
/* clean up */
s.Close();
}
myList.Stop();
Console.WriteLine("Server stopped");
}
