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• 

  Natalia Karaseva

  • March 31, 2015 17:37

  Hello!

  I've just tried to implement the described behavior in Hello sample. It works correctly. Please, see below my code snippet in C#:

  // Create ImageDocument
  FREngine.DocumentInfo docInfo = engineLoader.Engine.CreateDocumentInfo();
  FREngine.ImageDocument imageDocument = engineLoader.Engine.OpenImageFile(imagePath, null, null, docInfo);
  
  // Process document #1 with DocumentConversion_Accuracy profile
  engineLoader.Engine.LoadPredefinedProfile("DocumentConversion_Accuracy");
  FREngine.FRDocument document1 = engineLoader.Engine.CreateFRDocument();
  document1.AddImageDocument(imageDocument);
  
  // Recognize document #1 and save results
  document1.Process( null );
  document1.Export( to PDF );
  
  // Process document #2 with TextExtraction_Accuracy profile
  engineLoader.Engine.LoadPredefinedProfile("TextExtraction_Accuracy");
  FREngine.FRDocument document2 = engineLoader.Engine.CreateFRDocument();
  document2.AddImageDocument(imageDocument);
  
  // Recognize document #2 and save results
  document2.Process(null);
  document2.Export(to TXT);
  

  Could you please specify the issue in details? What methods do you call? Where does the error message occur (code snippet will be useful)?

  No 0 Yes
• 

  maol

  • March 31, 2015 18:07

  Hello,

  After some testing it seems the problem happens only when loading the image file from memory by using the OpenImageFileFromMemory() method. The error occurs when calling document.AddImageDocument(imageDocument) for the second time

  Here is the code to reproduce the error (it's in Java) :

  public void test() throws Exception {
  
      IFRDocument document = null;
  
      try {
          //Load engine
          engine = Engine.Load(DLL_FOLDER, DEV_SERIAL_NUMBER);
  
          //Create ImageDocument from file in memory 
          //--> This produce the Invalid pointer exception
          byte[] fileContent = Files.readAllBytes(Paths.get("src/img/laca.jpg"));
          IImageDocument imageDocument = 
                  engine.OpenImageFileFromMemory(fileContent, null, null, null);
  
          //Create ImageDocument from file --> This is ok
          //IImageDocument imageDocument = 
              engine.OpenImageFile("src/img/laca.jpg", null, null, null);
  
          //Process document 1 with DocumentConversion_Accuracy profile
          engine.LoadPredefinedProfile("DocumentConversion_Accuracy");
  
          document = engine.CreateFRDocument();
          document.AddImageDocument(imageDocument);
  
          //Recognize document 1 and save results to PDF
          document.Process(null);
  
          IPDFExportParams pdfExportParams = engine.CreatePDFExportParams();
          pdfExportParams.setScenario( PDFExportScenarioEnum.PES_Balanced );
          document.Export("src/img/laca.pdf", FileExportFormatEnum.FEF_PDF, pdfExportParams);
  
          document.Close();
  
          //Process document 2 with TextExtraction_Accuracy profile
          engine.LoadPredefinedProfile("TextExtraction_Accuracy");
  
          document = engine.CreateFRDocument();
          document.AddImageDocument(imageDocument);
  
          //Recognize document 2 and save results to TXT
          document.Process(null);
          document.Export("src/img/laca.txt", FileExportFormatEnum.FEF_TextUnicodeDefaults, null);
      }
      finally {
          if(document != null) {
              document.Close();
          }
  
          if(engine != null) {
              // Unload ABBYY FineReader Engine
              engine = null;
              System.gc();
              System.runFinalization();
              Engine.Unload();
          }
      }
  }
  

  Note that for my project I have no choice than loading it from memory.

  No 0 Yes
• 

  Natalia Karaseva

  • April 01, 2015 20:21

  Thanks to the code snippet! The reason is that you call

  document.Close();
  

  before you finish FRDocument processing. Remove it.

  Also, you don't need to call CreateFRDocument and AddImageDocument the second time. The ImageDocument has been already added into the FRDocument, so you just change the profile to TextExtraction_Accuracy and Process the doc again. Please, explore the code snippet below:

  // Create the only one FRDocument
  IFRDocument document = engine.CreateFRDocument();
  try {       
      //Create ImageDocument from file in memory 
      byte[] fileContent = Files.readAllBytes(Paths.get(imagePath));
      IImageDocument imageDocument = engine.OpenImageFileFromMemory(fileContent, null, null, null);
  
      // Add image file to the document for only one time.
      document.AddImageDocument(imageDocument);
  
      //Recognize document and save results to PDF
      document.Process(null);
      document.Export(imagePath + ".pdf", FileExportFormatEnum.FEF_PDF, null);
  
      // Change the profile
      engine.LoadPredefinedProfile("TextExtraction_Accuracy");
  
      //Recognize document with new settings and save results to TXT
      document.Process(null);
      document.Export(imagePath + ".txt", FileExportFormatEnum.FEF_TextUnicodeDefaults, null);
  
      // Close document
      document.Close();
  } finally {
      // Close document
      if(document != null) {
          document.Close();
      }
  }
  

  No 1 Yes
• 

  maol

  • April 02, 2015 14:58

  Ok, I did not know that I could process a document multiple times with different profiles. It solved my problem, thanks :)

  No 0 Yes

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