public void TestOCREngGrayText()
{
using (Tesseract ocr = GetTesseract())
using (Image <Gray, Byte> img = new Image <Gray, byte>(480, 200))
{
ocr.SetVariable("tessedit_char_whitelist", "ABCDEFGHJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz,");
IntPtr oclDevice = new IntPtr();
int deviceId = ocr.GetOpenCLDevice(ref oclDevice);
String message = "Hello, World";
CvInvoke.PutText(img, message, new Point(50, 100), CvEnum.FontFace.HersheySimplex, 1.0, new MCvScalar(255));
//
//ocr.Recognize(img);
using (Image <Gray, Byte> rotatedImg = img.Rotate(10, new Gray(), false))
{
ocr.PageSegMode = PageSegMode.AutoOsd;
ocr.SetImage(rotatedImg);
ocr.Recognize();
using (PageIterator pi = ocr.AnalyseLayout())
{
Orientation or = pi.Orientation;
LineSegment2D?baseLine = pi.GetBaseLine(PageIteratorLevel.Textline);
if (baseLine.HasValue)
{
CvInvoke.Line(rotatedImg, baseLine.Value.P1, baseLine.Value.P2, new MCvScalar(255));
//Emgu.CV.UI.ImageViewer.Show(rotatedImg);
}
}
String messageOcr = ocr.GetUTF8Text().TrimEnd('\n', '\r'); // remove end of line from ocr-ed text
//EmguAssert.AreEqual(message, messageOcr,
// String.Format("'{0}' is not equal to '{1}'", message, messageOcr));
Tesseract.Character[] results = ocr.GetCharacters();
String s1 = ocr.GetBoxText();
//String s2 = ocr.GetOsdText();
String s3 = ocr.GetTSVText();
String s4 = ocr.GetUNLVText();
using (PDFRenderer pdfRenderer = new PDFRenderer("abc.pdf", "./", false))
using (Pix imgPix = new Pix(img.Mat))
{
//bool success = ocr.ProcessPage(imgPix, 1, "img", null, 100000, pdfRenderer);
//EmguAssert.IsTrue(success, "failed to export pdf");
}
}
}
}
public void TestOCREngGrayText()
{
using (Tesseract ocr = GetTesseract())
using (Image <Gray, Byte> img = new Image <Gray, byte>(480, 200))
{
ocr.SetVariable("tessedit_char_whitelist", "ABCDEFGHJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz,");
IntPtr oclDevice = new IntPtr();
int deviceId = ocr.GetOpenCLDevice(ref oclDevice);
String message = "Hello, World";
CvInvoke.PutText(img, message, new Point(50, 100), CvEnum.FontFace.HersheySimplex, 1.0, new MCvScalar(255));
//
//ocr.Recognize(img);
using (Image <Gray, Byte> rotatedImg = img.Rotate(10, new Gray(), false))
{
ocr.PageSegMode = PageSegMode.AutoOsd;
ocr.Recognize(rotatedImg);
using (PageIterator pi = ocr.AnalyseLayout())
{
Orientation or = pi.Orientation;
LineSegment2D?baseLine = pi.GetBaseLine(PageIteratorLevel.Textline);
if (baseLine.HasValue)
{
CvInvoke.Line(rotatedImg, baseLine.Value.P1, baseLine.Value.P2, new MCvScalar(255));
//Emgu.CV.UI.ImageViewer.Show(rotatedImg);
}
}
/*
* String messageOcr = ocr.GetText().TrimEnd('\n', '\r'); // remove end of line from ocr-ed text
* EmguAssert.AreEqual(message, messageOcr,
* String.Format("'{0}' is not equal to '{1}'", message, messageOcr));
*
* Tesseract.Character[] results = ocr.GetCharacters();*/
}
}
}
