LEADTOOLS OCR (Leadtools.Forms.Ocr assembly)
LEAD Technologies, Inc

IOcrDocumentManager Interface

Example 





Members 
Leadtools.Forms.Ocr Namespace : IOcrDocumentManager Interface
Manages the OCR documents of this IOcrEngine. .NET support
Object Model
IOcrDocumentManager Interface
Syntax
public interface IOcrDocumentManager 
'Declaration
 
Public Interface IOcrDocumentManager 
'Usage
 
Dim instance As IOcrDocumentManager
public interface IOcrDocumentManager 
function Leadtools.Forms.Ocr.IOcrDocumentManager() 
public interface class IOcrDocumentManager
Remarks

You can access the instance of the IOcrDocumentManager used by an IOcrEngine through the IOcrEngine.DocumentManager property.

The IOcrDocumentManager interface allows you to create IOcrDocument objects that encapsulate an OCR'ed document. Each OCR document contains a collection of IOcrPage that you can use to add and remove pages from the document. After you add the pages to the document and optionally manage the zones on the pages, you can call the IOcrPage.Recognize method on each page to obtain the recognition data and store them internally in the pages. Once you are done, you can use the save methods of the IOcrDocument object to save the document into its final format.

LEADTOOLS supports saving to various standard document formats such as PDF, Microsoft Word, HTML and several others through the LEADTOOLS Document Writers engine. For more information, refer to IOcrDocument and Leadtools.Forms.DocumentWriters.DocumentFormat.

Typical OCR operation using the IOcrEngine involves starting up the engine, create an IOcrDocument object using the IOcrDocumentManager.CreateDocument method and adding the pages into it and perform either automatic or manual zoning. Once this is done, After the recognition data is collected using IOcrPage.Recognize, you use the various IOcrDocument.Save methods to save the document to its final format such as PDF, DOC or HTML.

In addition to the above, you can use IOcrDocument.SaveXml to save the document as XML.

Example
Copy CodeCopy Code   
Public Sub OcrDocumentManagerExample()
      Dim tifFileName1 As String = Path.Combine(LEAD_VARS.ImagesDir, "Ocr1.tif")
      Dim tifFileName2 As String = Path.Combine(LEAD_VARS.ImagesDir, "Ocr2.tif")
      Dim outputDirectory As String = LEAD_VARS.ImagesDir
      ' Create the output directory
      If (Directory.Exists(outputDirectory)) Then
         Directory.Delete(outputDirectory, True)
      End If
      Directory.CreateDirectory(outputDirectory)

      ' Create an instance of the engine
      Using ocrEngine As IOcrEngine = OcrEngineManager.CreateEngine(OcrEngineType.Plus, False)
         ' Start the engine using default parameters
         Console.WriteLine("Starting up the engine...")
         ocrEngine.Startup(Nothing, Nothing, Nothing, Nothing)

         ' Create the OCR document
         Console.WriteLine("Creating the OCR document...")
         Dim ocrDocumentManager As IOcrDocumentManager = ocrEngine.DocumentManager
         Using ocrDocument As IOcrDocument = ocrDocumentManager.CreateDocument()

            ' Add the pages to the document
            Console.WriteLine("Adding the pages...")
            ocrDocument.Pages.AddPage(tifFileName1, Nothing)
            ocrDocument.Pages.AddPage(tifFileName2, Nothing)

            ' Recognize the pages to this document. Note, we did not call AutoZone, it will explicitly be called by Recognize
            Console.WriteLine("Recognizing all the pages...")
            ocrDocument.Pages.Recognize(Nothing)

            ' Save to all the formats supported by this OCR engine
            Dim formats As Array = System.Enum.GetValues(GetType(DocumentFormat))
            For Each format As DocumentFormat In formats
               Dim friendlyName As String = DocumentWriter.GetFormatFriendlyName(format)
               Console.WriteLine("Saving (using default options) to {0}...", friendlyName)

               ' Construct the output file name (output_directory + document_format_name + . + extension)
               Dim extension As String = DocumentWriter.GetFormatFileExtension(format)
               Dim outputFileName As String = Path.Combine(outputDirectory, format.ToString() + "." + extension)

               ' Save the document
               ocrDocument.Save(outputFileName, format, Nothing)

               ' If this is the LTD format, convert it to PDF
               If format = DocumentFormat.Ltd Then
                  Console.WriteLine("Converting the LTD file to PDF...")
                  Dim pdfFileName As String = Path.Combine(outputDirectory, format.ToString() + "_pdf.pdf")

                  Dim docWriter As DocumentWriter = ocrEngine.DocumentWriterInstance
                  docWriter.Convert(outputFileName, pdfFileName, DocumentFormat.Pdf)
               End If
            Next

            ' Now save to all the engine native formats (if any) supported by the engine
            Dim engineFormats() As String = ocrDocumentManager.GetSupportedEngineFormats()
            For Each engineFormat As String In engineFormats
               Dim friendlyName As String = ocrDocumentManager.GetEngineFormatFriendlyName(engineFormat)
               Console.WriteLine("Saving to engine native format {0}...", friendlyName)

               ' Construct the output file name (output_directory + "engine" + engine_format_name + . + extension)
               Dim extension As String = ocrDocumentManager.GetEngineFormatFileExtension(engineFormat)
               Dim outputFileName As String = Path.Combine(outputDirectory, "engine_" + engineFormat + "." + extension)

               ' To use this format, set it in the IOcrDocumentManager.EngineFormat and do a normal save using DocumentFormat.User

               ' Save the document
               ocrDocumentManager.EngineFormat = engineFormat
               ocrDocument.Save(outputFileName, DocumentFormat.User, Nothing)
            Next
         End Using

         ' Shutdown the engine
         ' Note: calling Dispose will also automatically shutdown the engine if it has been started
         Console.WriteLine("Shutting down...")
         ocrEngine.Shutdown()
      End Using
   End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class
public void OcrDocumentManagerExample()
   {
      string tifFileName1 = Path.Combine(LEAD_VARS.ImagesDir, "Ocr1.tif");
      string tifFileName2 = Path.Combine(LEAD_VARS.ImagesDir, "Ocr2.tif");
      string outputDirectory = LEAD_VARS.ImagesDir;
      // Create the output directory
      if(Directory.Exists(outputDirectory))
         Directory.Delete(outputDirectory, true);
      Directory.CreateDirectory(outputDirectory);

      // Create an instance of the engine
      using(IOcrEngine ocrEngine = OcrEngineManager.CreateEngine(OcrEngineType.Plus, false))
      {
         // Start the engine using default parameters
         Console.WriteLine("Starting up the engine...");
         ocrEngine.Startup(null, null, null, null);

         // Create the OCR document
         Console.WriteLine("Creating the OCR document...");
         IOcrDocumentManager ocrDocumentManager = ocrEngine.DocumentManager;
         using(IOcrDocument ocrDocument = ocrDocumentManager.CreateDocument())
         {
            // Add the pages to the document
            Console.WriteLine("Adding the pages...");
            ocrDocument.Pages.AddPage(tifFileName1, null);
            ocrDocument.Pages.AddPage(tifFileName2, null);

            // Recognize the pages to this document. Note, we did not call AutoZone, it will explicitly be called by Recognize
            Console.WriteLine("Recognizing all the pages...");
            ocrDocument.Pages.Recognize(null);

            // Save to all the formats supported by this OCR engine
            Array formats = Enum.GetValues(typeof(DocumentFormat));
            foreach(DocumentFormat format in formats)
            {
               string friendlyName = DocumentWriter.GetFormatFriendlyName(format);
               Console.WriteLine("Saving (using default options) to {0}...", friendlyName);

               // Construct the output file name (output_directory + document_format_name + . + extension)
               string extension = DocumentWriter.GetFormatFileExtension(format);
               string outputFileName = Path.Combine(outputDirectory, format.ToString() + "." + extension);

               // Save the document
               ocrDocument.Save(outputFileName, format, null);

               // If this is the LTD format, convert it to PDF
               if(format == DocumentFormat.Ltd)
               {
                  Console.WriteLine("Converting the LTD file to PDF...");
                  string pdfFileName = Path.Combine(outputDirectory, format.ToString() + "_pdf.pdf");

                  DocumentWriter docWriter = ocrEngine.DocumentWriterInstance;
                  docWriter.Convert(outputFileName, pdfFileName, DocumentFormat.Pdf);
               }
            }

            // Now save to all the engine native formats (if any) supported by the engine
            string[] engineFormats = ocrDocumentManager.GetSupportedEngineFormats();
            foreach(string engineFormat in engineFormats)
            {
               string friendlyName = ocrDocumentManager.GetEngineFormatFriendlyName(engineFormat);
               Console.WriteLine("Saving to engine native format {0}...", friendlyName);

               // Construct the output file name (output_directory + "engine" + engine_format_name + . + extension)
               string extension = ocrDocumentManager.GetEngineFormatFileExtension(engineFormat);
               string outputFileName = Path.Combine(outputDirectory, "engine_" + engineFormat + "." + extension);

               // To use this format, set it in the IOcrDocumentManager.EngineFormat and do a normal save using DocumentFormat.User

               // Save the document
               ocrDocumentManager.EngineFormat = engineFormat;
               ocrDocument.Save(outputFileName, DocumentFormat.User, null);
            }
         }

         // Shutdown the engine
         // Note: calling Dispose will also automatically shutdown the engine if it has been started
         Console.WriteLine("Shutting down...");
         ocrEngine.Shutdown();
      }
   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
[TestMethod]
public async Task OcrDocumentManagerExample()
{
   string tifFileName1 = @"Assets\Ocr1.tif";
   string tifFileName2 = @"Assets\Ocr2.tif";
   string[] sourceFiles = 
   {
      tifFileName1,
      tifFileName2
   };

   // Create an instance of the engine
   IOcrEngine ocrEngine = OcrEngineManager.CreateEngine(OcrEngineType.Advantage, false);

   // Start the engine using default parameters
   Debug.WriteLine("Starting up the engine...");
   ocrEngine.Startup(null, null, String.Empty, Tools.OcrEnginePath);

   // Create the OCR document
   Debug.WriteLine("Creating the OCR document...");
   IOcrDocumentManager ocrDocumentManager = ocrEngine.DocumentManager;
   IOcrDocument ocrDocument = ocrDocumentManager.CreateDocument();

   // Add the pages to the document
   Debug.WriteLine("Adding the pages...");

   using (RasterCodecs codecs = new RasterCodecs())
   {
      foreach (string fileName in sourceFiles)
      {
         StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(fileName);
         using (RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile)))
         {
            ocrDocument.Pages.AddPage(image, null);
         }
      }
   }

   // Recognize the pages to this document. Note, we did not call AutoZone, it will explicitly be called by Recognize
   Debug.WriteLine("Recognizing all the pages...");
   ocrDocument.Pages.Recognize(null);

   // Save to all the formats supported by this OCR engine
   DocumentFormat[] supportedFormats = DocumentWriter.GetSupportedFormats();
   foreach (DocumentFormat format in supportedFormats)
   {
      string friendlyName = DocumentWriter.GetFormatFriendlyName(format);
      Debug.WriteLine("Saving (using default options) to {0}...", friendlyName);

      // Construct the output file name (output_directory + document_format_name + . + extension)
      string extension = DocumentWriter.GetFormatFileExtension(format);
      string outputFileName = format.ToString() + "." + extension;

      // Save the document
      StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(outputFileName, CreationCollisionOption.ReplaceExisting);
      await ocrDocument.SaveAsync(LeadStreamFactory.Create(saveFile), format, null);

      // If this is the LTD format, convert it to PDF
      if (format == DocumentFormat.Ltd)
      {
         Debug.WriteLine("Converting the LTD file to PDF...");
         string pdfFileName = Path.Combine(Tools.AppLocalFolder.Path, format.ToString() + "_pdf.pdf");

         DocumentWriter docWriter = ocrEngine.DocumentWriterInstance;
         docWriter.Convert(outputFileName, pdfFileName, DocumentFormat.Pdf);
      }
   }

   // Shutdown the engine
   Debug.WriteLine("Shutting down...");
   ocrEngine.Shutdown();
}
Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

See Also

Reference

IOcrDocumentManager Members
Leadtools.Forms.Ocr Namespace
Leadtools.Forms.DocumentWriters.DocumentFormat
IOcrDocument Interface
IOcrDocument.Save
IOcrDocument.SaveXml
IOcrPage.Recognize
IOcrEngine Interface
OcrEngineManager Class
OcrEngineType Enumeration
Programming with the LEADTOOLS .NET OCR
Files to be Included with Your Application
Recognizing OCR Pages

Manages the OCR documents of this IOcrEngine. .NET support
Object Model
IOcrDocumentManager Interface
Syntax
public interface IOcrDocumentManager 
'Declaration
 
Public Interface IOcrDocumentManager 
'Usage
 
Dim instance As IOcrDocumentManager
public interface IOcrDocumentManager 
function Leadtools.Forms.Ocr.IOcrDocumentManager() 
public interface class IOcrDocumentManager
Remarks

You can access the instance of the IOcrDocumentManager used by an IOcrEngine through the IOcrEngine.DocumentManager property.

The IOcrDocumentManager interface allows you to create IOcrDocument objects that encapsulate an OCR'ed document. Each OCR document contains a collection of IOcrPage that you can use to add and remove pages from the document. After you add the pages to the document and optionally manage the zones on the pages, you can call the IOcrPage.Recognize method on each page to obtain the recognition data and store them internally in the pages. Once you are done, you can use the save methods of the IOcrDocument object to save the document into its final format.

LEADTOOLS supports saving to various standard document formats such as PDF, Microsoft Word, HTML and several others through the LEADTOOLS Document Writers engine. For more information, refer to IOcrDocument and Leadtools.Forms.DocumentWriters.DocumentFormat.

Typical OCR operation using the IOcrEngine involves starting up the engine, create an IOcrDocument object using the IOcrDocumentManager.CreateDocument method and adding the pages into it and perform either automatic or manual zoning. Once this is done, After the recognition data is collected using IOcrPage.Recognize, you use the various IOcrDocument.Save methods to save the document to its final format such as PDF, DOC or HTML.

In addition to the above, you can use IOcrDocument.SaveXml to save the document as XML.

Example
Copy CodeCopy Code   
Public Sub OcrDocumentManagerExample()
      Dim tifFileName1 As String = Path.Combine(LEAD_VARS.ImagesDir, "Ocr1.tif")
      Dim tifFileName2 As String = Path.Combine(LEAD_VARS.ImagesDir, "Ocr2.tif")
      Dim outputDirectory As String = LEAD_VARS.ImagesDir
      ' Create the output directory
      If (Directory.Exists(outputDirectory)) Then
         Directory.Delete(outputDirectory, True)
      End If
      Directory.CreateDirectory(outputDirectory)

      ' Create an instance of the engine
      Using ocrEngine As IOcrEngine = OcrEngineManager.CreateEngine(OcrEngineType.Plus, False)
         ' Start the engine using default parameters
         Console.WriteLine("Starting up the engine...")
         ocrEngine.Startup(Nothing, Nothing, Nothing, Nothing)

         ' Create the OCR document
         Console.WriteLine("Creating the OCR document...")
         Dim ocrDocumentManager As IOcrDocumentManager = ocrEngine.DocumentManager
         Using ocrDocument As IOcrDocument = ocrDocumentManager.CreateDocument()

            ' Add the pages to the document
            Console.WriteLine("Adding the pages...")
            ocrDocument.Pages.AddPage(tifFileName1, Nothing)
            ocrDocument.Pages.AddPage(tifFileName2, Nothing)

            ' Recognize the pages to this document. Note, we did not call AutoZone, it will explicitly be called by Recognize
            Console.WriteLine("Recognizing all the pages...")
            ocrDocument.Pages.Recognize(Nothing)

            ' Save to all the formats supported by this OCR engine
            Dim formats As Array = System.Enum.GetValues(GetType(DocumentFormat))
            For Each format As DocumentFormat In formats
               Dim friendlyName As String = DocumentWriter.GetFormatFriendlyName(format)
               Console.WriteLine("Saving (using default options) to {0}...", friendlyName)

               ' Construct the output file name (output_directory + document_format_name + . + extension)
               Dim extension As String = DocumentWriter.GetFormatFileExtension(format)
               Dim outputFileName As String = Path.Combine(outputDirectory, format.ToString() + "." + extension)

               ' Save the document
               ocrDocument.Save(outputFileName, format, Nothing)

               ' If this is the LTD format, convert it to PDF
               If format = DocumentFormat.Ltd Then
                  Console.WriteLine("Converting the LTD file to PDF...")
                  Dim pdfFileName As String = Path.Combine(outputDirectory, format.ToString() + "_pdf.pdf")

                  Dim docWriter As DocumentWriter = ocrEngine.DocumentWriterInstance
                  docWriter.Convert(outputFileName, pdfFileName, DocumentFormat.Pdf)
               End If
            Next

            ' Now save to all the engine native formats (if any) supported by the engine
            Dim engineFormats() As String = ocrDocumentManager.GetSupportedEngineFormats()
            For Each engineFormat As String In engineFormats
               Dim friendlyName As String = ocrDocumentManager.GetEngineFormatFriendlyName(engineFormat)
               Console.WriteLine("Saving to engine native format {0}...", friendlyName)

               ' Construct the output file name (output_directory + "engine" + engine_format_name + . + extension)
               Dim extension As String = ocrDocumentManager.GetEngineFormatFileExtension(engineFormat)
               Dim outputFileName As String = Path.Combine(outputDirectory, "engine_" + engineFormat + "." + extension)

               ' To use this format, set it in the IOcrDocumentManager.EngineFormat and do a normal save using DocumentFormat.User

               ' Save the document
               ocrDocumentManager.EngineFormat = engineFormat
               ocrDocument.Save(outputFileName, DocumentFormat.User, Nothing)
            Next
         End Using

         ' Shutdown the engine
         ' Note: calling Dispose will also automatically shutdown the engine if it has been started
         Console.WriteLine("Shutting down...")
         ocrEngine.Shutdown()
      End Using
   End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class
public void OcrDocumentManagerExample()
   {
      string tifFileName1 = Path.Combine(LEAD_VARS.ImagesDir, "Ocr1.tif");
      string tifFileName2 = Path.Combine(LEAD_VARS.ImagesDir, "Ocr2.tif");
      string outputDirectory = LEAD_VARS.ImagesDir;
      // Create the output directory
      if(Directory.Exists(outputDirectory))
         Directory.Delete(outputDirectory, true);
      Directory.CreateDirectory(outputDirectory);

      // Create an instance of the engine
      using(IOcrEngine ocrEngine = OcrEngineManager.CreateEngine(OcrEngineType.Plus, false))
      {
         // Start the engine using default parameters
         Console.WriteLine("Starting up the engine...");
         ocrEngine.Startup(null, null, null, null);

         // Create the OCR document
         Console.WriteLine("Creating the OCR document...");
         IOcrDocumentManager ocrDocumentManager = ocrEngine.DocumentManager;
         using(IOcrDocument ocrDocument = ocrDocumentManager.CreateDocument())
         {
            // Add the pages to the document
            Console.WriteLine("Adding the pages...");
            ocrDocument.Pages.AddPage(tifFileName1, null);
            ocrDocument.Pages.AddPage(tifFileName2, null);

            // Recognize the pages to this document. Note, we did not call AutoZone, it will explicitly be called by Recognize
            Console.WriteLine("Recognizing all the pages...");
            ocrDocument.Pages.Recognize(null);

            // Save to all the formats supported by this OCR engine
            Array formats = Enum.GetValues(typeof(DocumentFormat));
            foreach(DocumentFormat format in formats)
            {
               string friendlyName = DocumentWriter.GetFormatFriendlyName(format);
               Console.WriteLine("Saving (using default options) to {0}...", friendlyName);

               // Construct the output file name (output_directory + document_format_name + . + extension)
               string extension = DocumentWriter.GetFormatFileExtension(format);
               string outputFileName = Path.Combine(outputDirectory, format.ToString() + "." + extension);

               // Save the document
               ocrDocument.Save(outputFileName, format, null);

               // If this is the LTD format, convert it to PDF
               if(format == DocumentFormat.Ltd)
               {
                  Console.WriteLine("Converting the LTD file to PDF...");
                  string pdfFileName = Path.Combine(outputDirectory, format.ToString() + "_pdf.pdf");

                  DocumentWriter docWriter = ocrEngine.DocumentWriterInstance;
                  docWriter.Convert(outputFileName, pdfFileName, DocumentFormat.Pdf);
               }
            }

            // Now save to all the engine native formats (if any) supported by the engine
            string[] engineFormats = ocrDocumentManager.GetSupportedEngineFormats();
            foreach(string engineFormat in engineFormats)
            {
               string friendlyName = ocrDocumentManager.GetEngineFormatFriendlyName(engineFormat);
               Console.WriteLine("Saving to engine native format {0}...", friendlyName);

               // Construct the output file name (output_directory + "engine" + engine_format_name + . + extension)
               string extension = ocrDocumentManager.GetEngineFormatFileExtension(engineFormat);
               string outputFileName = Path.Combine(outputDirectory, "engine_" + engineFormat + "." + extension);

               // To use this format, set it in the IOcrDocumentManager.EngineFormat and do a normal save using DocumentFormat.User

               // Save the document
               ocrDocumentManager.EngineFormat = engineFormat;
               ocrDocument.Save(outputFileName, DocumentFormat.User, null);
            }
         }

         // Shutdown the engine
         // Note: calling Dispose will also automatically shutdown the engine if it has been started
         Console.WriteLine("Shutting down...");
         ocrEngine.Shutdown();
      }
   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
[TestMethod]
public async Task OcrDocumentManagerExample()
{
   string tifFileName1 = @"Assets\Ocr1.tif";
   string tifFileName2 = @"Assets\Ocr2.tif";
   string[] sourceFiles = 
   {
      tifFileName1,
      tifFileName2
   };

   // Create an instance of the engine
   IOcrEngine ocrEngine = OcrEngineManager.CreateEngine(OcrEngineType.Advantage, false);

   // Start the engine using default parameters
   Debug.WriteLine("Starting up the engine...");
   ocrEngine.Startup(null, null, String.Empty, Tools.OcrEnginePath);

   // Create the OCR document
   Debug.WriteLine("Creating the OCR document...");
   IOcrDocumentManager ocrDocumentManager = ocrEngine.DocumentManager;
   IOcrDocument ocrDocument = ocrDocumentManager.CreateDocument();

   // Add the pages to the document
   Debug.WriteLine("Adding the pages...");

   using (RasterCodecs codecs = new RasterCodecs())
   {
      foreach (string fileName in sourceFiles)
      {
         StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(fileName);
         using (RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile)))
         {
            ocrDocument.Pages.AddPage(image, null);
         }
      }
   }

   // Recognize the pages to this document. Note, we did not call AutoZone, it will explicitly be called by Recognize
   Debug.WriteLine("Recognizing all the pages...");
   ocrDocument.Pages.Recognize(null);

   // Save to all the formats supported by this OCR engine
   DocumentFormat[] supportedFormats = DocumentWriter.GetSupportedFormats();
   foreach (DocumentFormat format in supportedFormats)
   {
      string friendlyName = DocumentWriter.GetFormatFriendlyName(format);
      Debug.WriteLine("Saving (using default options) to {0}...", friendlyName);

      // Construct the output file name (output_directory + document_format_name + . + extension)
      string extension = DocumentWriter.GetFormatFileExtension(format);
      string outputFileName = format.ToString() + "." + extension;

      // Save the document
      StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(outputFileName, CreationCollisionOption.ReplaceExisting);
      await ocrDocument.SaveAsync(LeadStreamFactory.Create(saveFile), format, null);

      // If this is the LTD format, convert it to PDF
      if (format == DocumentFormat.Ltd)
      {
         Debug.WriteLine("Converting the LTD file to PDF...");
         string pdfFileName = Path.Combine(Tools.AppLocalFolder.Path, format.ToString() + "_pdf.pdf");

         DocumentWriter docWriter = ocrEngine.DocumentWriterInstance;
         docWriter.Convert(outputFileName, pdfFileName, DocumentFormat.Pdf);
      }
   }

   // Shutdown the engine
   Debug.WriteLine("Shutting down...");
   ocrEngine.Shutdown();
}
Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

See Also

Reference

IOcrDocumentManager Members
Leadtools.Forms.Ocr Namespace
Leadtools.Forms.DocumentWriters.DocumentFormat
IOcrDocument Interface
IOcrDocument.Save
IOcrDocument.SaveXml
IOcrPage.Recognize
IOcrEngine Interface
OcrEngineManager Class
OcrEngineType Enumeration
Programming with the LEADTOOLS .NET OCR
Files to be Included with Your Application
Recognizing OCR Pages

 

 

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IOcrDocumentManager requires an OCR module license and unlock key. For more information, refer to: Imaging Pro/Document/Medical Features