/// <summary>
/// Initialize a new OCR Object.
///
/// This object is a wrapper for the Emgu Tesseract Wrapper to give a level of abstraction
/// necessary for scanning shreds
/// </summary>
/// <param name="accuracy"> Desired Accuracy setting </param>
/// <param name="language"> Language of text on image used for OCR model </param>
/// <param name="enableTimer"> Set enable Timer to true to measure scan time for diagnostic purposes </param>
public OCR(Accuracy accuracy = Accuracy.High, string language = "eng", bool enableTimer = false)
{
_timer = new Stopwatch();
if (enableTimer)
{
_timer.Start();
}
Tesseract.OcrEngineMode mode = Tesseract.OcrEngineMode.OEM_TESSERACT_CUBE_COMBINED;
switch (accuracy)
{
case Accuracy.Low:
mode = Tesseract.OcrEngineMode.OEM_TESSERACT_ONLY;
break;
case Accuracy.Medium:
mode = Tesseract.OcrEngineMode.OEM_CUBE_ONLY;
break;
case Accuracy.High:
mode = Tesseract.OcrEngineMode.OEM_TESSERACT_CUBE_COMBINED;
break;
}
_tesseract = new Tesseract("tessdata", language, mode);
//"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz");
_tesseract.SetVariable("tessedit_unrej_any_wd", "T");
//_tesseract.SetVariable("tessedit_char_whitelist","abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWZ0123456789.,");
_text = null;
_chars = null;
_confidence = -1;
}
public Form1()
{
InitializeComponent();
ocr = new Tesseract();
ocr.SetVariable("tessedit_char_whitelist", "1234567890");
ocr.Init(@"D:\", "eng", OcrEngineMode.TesseractOnly);
}
/// <summary>
/// Create a license plate detector
/// </summary>
/// <param name="dataPath">
/// The datapath must be the name of the parent directory of tessdata and
/// must end in / . Any name after the last / will be stripped.
/// </param>
public LicensePlateDetector(String dataPath)
{
//create OCR engine
#if __IOS__ || __ANDROID__
//LSTM mode requires the native binary to be build with libtiff
//Open CV's iOS build disables libtiff in the build process
//For iOS, we will use TessractOnly mode
//Android build is also having issues with the LSTM engine
//For Android, we will also use Tesseract Only mode.
InitOcr(dataPath, "eng", OcrEngineMode.TesseractOnly);
#else
InitOcr(dataPath, "eng", OcrEngineMode.TesseractLstmCombined);
#endif
_ocr.SetVariable("tessedit_char_whitelist", "ABCDEFGHIJKLMNOPQRSTUVWXYZ-1234567890");
}
public BotCV(IntPtr win, int Hmin, int Smin, int Vmin, int Hmax, int Smax, int Vmax)
{
this.Hmin = Hmin;
this.Hmax = Hmax;
this.Smin = Smin;
this.Smax = Smax;
this.Vmin = Vmin;
this.Vmax = Vmax;
sc = new ScreenCapture();
winDiscript = win;
try
{
tess = new Emgu.CV.OCR.Tesseract(@"", "eng", OcrEngineMode.TesseractOnly);
tess.SetVariable("tessedit_char_whitelist", ".0123456789");
}
catch (Exception te)
{
Console.WriteLine(te.Message);
tess = null;
}
}
/// <summary>
/// Create a license plate detector
/// </summary>
/// <param name="dataPath">
/// The datapath must be the name of the parent directory of tessdata and
/// must end in / . Any name after the last / will be stripped.
/// </param>
public LicensePlateDetector(String dataPath)
{
//create OCR engine
_ocr = new Tesseract(dataPath, "eng", OcrEngineMode.TesseractCubeCombined);
_ocr.SetVariable("tessedit_char_whitelist", "ABCDEFGHIJKLMNOPQRSTUVWXYZ-1234567890");
}
/// <summary>
/// Create a license plate detector
/// </summary>
public LicensePlateDetector()
{
//create OCR engine
_ocr = new Tesseract("tessdata", "eng", Tesseract.OcrEngineMode.OEM_TESSERACT_CUBE_COMBINED);
_ocr.SetVariable("tessedit_char_whitelist", "ABCDEFGHIJKLMNOPQRSTUVWXYZ-1234567890");
}
static void Main(string[] args)
{
var files = Directory.GetFiles(@"d:\raw\classified\");
//var img = new Image<Rgb, byte>(files[0]);
var img = new Image<Emgu.CV.Structure.Gray, byte>(@"d:\raw\classified\test.jpg");
var _ocr = new Tesseract(@"D:\", "eng", OcrEngineMode.TesseractCubeCombined);
_ocr.SetVariable("tessedit_char_whitelist", "1234567890");
_ocr.Recognize(img);
var result = _ocr.GetCharacters();
}
private void button5_Click(object sender, EventArgs e)
{
var _ocr = new Tesseract(@"D:\", "eng", OcrEngineMode.TesseractCubeCombined);
_ocr.SetVariable("tessedit_char_whitelist", "1234567890");
_ocr.Recognize(_inputArray);
var result = _ocr.GetCharacters().ToList();
var sb = new StringBuilder();
result.ForEach(c => sb.Append(c.Text));
label1.Text = sb.ToString();
}
public RecognatorBrains()
{
//_ocr = new Emgu.CV.OCR.Tesseract("C:/Users/sedgu/Documents/emgucv-windesktop 3.2.0.2682/Emgu.CV.Example/LicensePlateRecognition/obj/Debug/tessdata", "eng", OcrEngineMode.TesseractOnly);
InitOcr(Directory.GetCurrentDirectory() + "\\", "eng", OcrEngineMode.TesseractCubeCombined);
_ocr.SetVariable("tessedit_char_whitelist", "ABEKMHOPCTXY-1234567890");
}
