L_Doc2SetPreProcessingOptions

#include "ltdoc2.h"

L_LTDOC2_API L_INT EXT_FUNCTION L_Doc2SetPreProcessingOptions(hDoc, pOptions)

L_HDOC2 hDoc;	/* handle to the OCR document */
pDOC2PREPROCESSINGOPTIONS pOptions;	/* pre-processing options */

Sets the engine's pre-processing options.

Parameter	Description
hDoc	Handle to the OCR document. This handle is obtained by calling the L_Doc2StartUp function.
pOptions	Pointer to DOC2PREPROCESSINGOPTIONS structure that contains the pre-processing options to be set.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

To get the current engine's pre-processing options, call the L_Doc2GetPreProcessingOptions function.

Note: You should call this function before calling L_Doc2FindZones or L_Doc2Recognize functions because these options affects the auto-zoning and recognition results.

Required DLLs and Libraries

LTDOC2

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

See Also

Functions:	L_Doc2GetPreProcessingOptions
Topics:	Recognizing Document Pages

Example

For an example, refer to L_Doc2SetPreProcessingOptions.

#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName


L_LTDOC2TEX_API L_INT Doc2SetPreProcessingOptionsExample(L_HDOC2 hDoc, L_INT nPageIndex)
{
   L_INT nRet = FAILURE;
   DOC2PREPROCESSINGOPTIONS options;
   RECOGNIZEOPTS2 RecogOpts;

   ZeroMemory(&options, sizeof(DOC2PREPROCESSINGOPTIONS));

   nRet = L_Doc2GetPreProcessingOptions(hDoc, &options, sizeof(DOC2PREPROCESSINGOPTIONS));
   if(nRet == SUCCESS)
   {
      options.BinarizationMode = DOC2_CONVERSION_SET;
      options.nThreshold = 218;

      nRet = L_Doc2SetPreProcessingOptions(hDoc, &options);
      if(nRet == SUCCESS)
      {
         L_Doc2FindZones(hDoc, nPageIndex);

         RecogOpts.uStructSize = sizeof(RECOGNIZEOPTS2);
         RecogOpts.nPageIndexStart = nPageIndex;
         RecogOpts.nPagesCount = 1;
         RecogOpts.SpellLangId = DOC2_LANG_ID_ENGLISH;

         nRet = L_Doc2Recognize (hDoc, &RecogOpts, NULL, NULL);
         if (nRet == SUCCESS)
         {
            RESULTOPTIONS2 ResOpts;

            ZeroMemory(&ResOpts, sizeof(RESULTOPTIONS2));
            nRet = L_Doc2GetRecognitionResultOptions(hDoc, &ResOpts, sizeof(RESULTOPTIONS2));
            if(nRet != SUCCESS)
               return nRet;

            ResOpts.Format = DOC2_WORD_2000;
            ResOpts.FormatLevel = DOC2_FORMAT_LEVEL_AUTO;
            ResOpts.DocFormat = DOCUMENTFORMAT_USER;

            nRet = L_Doc2SetRecognitionResultOptions(hDoc, &ResOpts);
            if(nRet != SUCCESS)
               return nRet;

            nRet = L_Doc2SaveResultsToFile(hDoc, MAKE_IMAGE_PATH(TEXT("test.doc")));
            if (nRet == SUCCESS)
               MessageBox(NULL, TEXT("The recognition results were saved to a file."), TEXT("Notice!"), MB_OK);
         }
      }
   }

   return nRet;
}