public static IOcrEngine CreateEngine(
OcrEngineType engineType
)
+ (LTOcrEngine *)createEngine:(LTOcrEngineType)engineType
public static OcrEngine createEngine(OcrEngineType engineType)
public:
static IOcrEngine^ CreateEngine(
OcrEngineType^ engineType
)
def CreateEngine(self,engineType):
engineType
An OcrEngineType enumeration member that specifies the LEADTOOLS OCR engine type to use.
The IOcrEngine instance that this method creates.
CreateEngine should be the first method your application calls into the Leadtools.Ocr assembly. Afterwards, you can use the properties and methods of this interface to perform your OCR tasks.
Based on the engine type passed to the CreateEngine methods, OcrEngineManager will load the OCR engine defined in one of the supporting assemblies and return an interface to IOcrEngine. Use this interface and its included types to start using the Leadtools.Ocr class library. For more information about the engine types, refer to OcrEngineType.
The CreateEngine method lets you create an instance of IOcrEngine, loading the corresponding Leadtools.Ocr.[EngineName].dll assembly using the .NET System.Reflection.Assembly.Load(string assemblyString) method. You cannot unload this assembly once it has been successfully loaded.
The LEADTOOLS OCR Module - LEAD Engine is now thread-safe and no longer require the "THUNK" server.
This example will use the LEADTOOLS OCR Module - LEAD Engine to OCR an image and save it as a PDF file.
using Leadtools;
using Leadtools.Ocr;
using Leadtools.Document.Writer;
using Leadtools.Codecs;
public void CreateEngineExample()
{
// Create an instance of the engine
using (IOcrEngine ocrEngine = OcrEngineManager.CreateEngine(OcrEngineType.LEAD))
{
// Start the engine using default parameters
ocrEngine.Startup(null, null, null, LEAD_VARS.OcrLEADRuntimeDir);
string tifFileName = Path.Combine(LEAD_VARS.ImagesDir, "Ocr1.tif");
string pdfFileName = Path.Combine(LEAD_VARS.ImagesDir, "Ocr1.pdf");
// Create an OCR document
using (IOcrDocument ocrDocument = ocrEngine.DocumentManager.CreateDocument())
{
// Add a page to the document
IOcrPage ocrPage = ocrDocument.Pages.AddPage(tifFileName, null);
// Recognize the page
// Note, Recognize can be called without calling AutoZone or manually adding zones. The engine will
// check and automatically auto-zones the page
ocrPage.Recognize(null);
// Save the document we have as PDF
ocrDocument.Save(pdfFileName, DocumentFormat.Pdf, null);
}
// Shutdown the engine
// Note: calling Dispose will also automatically shutdown the engine if it has been started
ocrEngine.Shutdown();
}
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images";
public const string OcrLEADRuntimeDir = @"C:\LEADTOOLS23\Bin\Common\OcrLEADRuntime";
}
import static org.junit.Assert.assertTrue;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import org.junit.*;
import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;
import leadtools.*;
import leadtools.document.writer.DocumentFormat;
import leadtools.ocr.*;
public void OcrEngineManagerCreateEngineExample() {
final String OCR_LEAD_RUNTIME_DIR = "C:\\LEADTOOLS23\\Bin\\Common\\OcrLEADRuntime";
final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images";
// Create an instance of the engine
OcrEngine ocrEngine = OcrEngineManager.createEngine(OcrEngineType.LEAD);
// Start the engine using default parameters
ocrEngine.startup(null, null, null, OCR_LEAD_RUNTIME_DIR);
ILeadStream leadStream = LeadStreamFactory.create("C:\\LEADTOOLS23\\Resources\\Images\\Ocr1.tif");
String pdfFileName = combine(LEAD_VARS_IMAGES_DIR, "Ocr1.pdf");
// Create an OCR document
OcrDocument ocrDocument = ocrEngine.getDocumentManager().createDocument();
// Add a page to the document
OcrPage ocrPage = ocrDocument.getPages().addPage(leadStream, null);
// Recognize the page
// Note, Recognize can be called without calling AutoZone or manually adding
// zones. The engine will
// check and automatically auto-zones the page
ocrPage.recognize(null);
// Save the document we have as PDF
ocrDocument.save(pdfFileName, DocumentFormat.PDF, null);
assertTrue("File exists", (new File(pdfFileName)).exists());
System.out.printf("Command run, file saved to %s", pdfFileName);
// Shutdown the engine
// Note: calling Dispose will also automatically shutdown the engine if it has
// been started
ocrEngine.shutdown();
}
Programming with the LEADTOOLS .NET OCR
Creating an OCR Engine Instance
Starting and Shutting Down the OCR Engine
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