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• 

  Julia Anikushina

  • November 05, 2013 19:44

  To recognize only specified region you can create a Layout object and add blocks manually:

  1. Create a Layout object with the help of the CreateLayout method of the Engine object or obtain the Layout object, which corresponds to the page, via the IFRPage::Layout property.
  2. Create a Region object for the block using the IEngine::CreateRegion method and add rectangles to it using the IRegion::AddRect method.
  3. Create a block of required type and add it into the collection using the AddBlock method of the Layout object.
  4. Set the required parameters of the block (use the block properties object corresponding to the type of block).

  C# sample:

  // Create document and open image
  FREngine.FRDocument document = engineLoader.Engine.CreateFRDocument();
  document.AddImageFile( imagePath, null, null );
  
  // Remove all the blocks from the collection
  document.Pages[0].Layout.Blocks.RemoveAll();
  
  // Create region and specify its coordinates
  FREngine.Region region = engineLoader.Engine.CreateRegion(); 
  region.AddRect(Right,Top,Left,Bottom);
  
  // Add blocks of required type to the layout
  document.Pages[0].Layout.AddBlock(FREngine.BlockTypeEnum.BT_Barcode, region);
  
  // Set the required parameters of the block
  FREngine.TextOrientation textOrientation = engineLoader.Engine.CreateTextOrientation(); 
  textOrientation.RotationType = FREngine.RotationTypeEnum.RT_Counterclockwise; 
  document.Pages[0].Layout.Blocks[0].GetAsBarcodeBlock().TextOrientation = textOrientation;
  
  //Recognize document
  document.Recognize( null, null );
  

  For detailed information about these methods please refer to Developer’s Help.

  No 4 Yes
• 

  PhilippWuelfing

  • November 14, 2017 11:30

  What could be the reason if no text is recognized?

  I have a simple pdf file with 2 words of text.

  I am trying for days to get any text recognized.

  I already tried all possible ways using Engine, FRDocument and DocumentAnalyzer.

  No 0 Yes
• 

  Florian Hallensleben

  • November 15, 2017 07:20

  I don't know about FRE10 but in FRE11 it's not

  region.AddRect(Right,Top,Left,Bottom);

  but

  region.AddRect(Left,Top,Right,Bottom);

   

  No 0 Yes
• 

  Denis Gusak

  • November 24, 2017 13:23

  Hi!

  We need a little bit more information in order to help you.

  Can you please provide images you are trying to recognize and a piece of code that demonstrates how are you using FineReader Engine? You can post it here or send it to SDK_Support@abbyy.com.

  Also have you tried samples that comes with FineReader Engine with your pdf? 

  No 0 Yes
• 

  PhilippWuelfing

  • December 04, 2017 12:49

  Hi,

  I solved this issue as described in this thread: 

  https://forum.ocrsdk.com/thread/layout-file/?order=all#comment-ae93f5d9-9057-4c68-82f9-a82d00a71632

   

  Solution was to set the language for the RecognizerParams of the TextBlock.

  No 0 Yes

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