unable to compile example code

[Greg Hines]

Hi, I'm trying to build some example code from https://code.google.com/p/tesseract-ocr/wiki/APIExample. I have the following:

#include <tesseract/api/baseapi.h>
#include <leptonica-1.72/src/allheaders.h>

int main()
{
   char *outText;

   tesseract::TessBaseAPI *api = new tesseract::TessBaseAPI();
   // Initialize tesseract-ocr with English, without specifying tessdata path
   if (api->Init(NULL, "eng")) {
       fprintf(stderr, "Could not initialize tesseract.\n");
       exit(1);
   }

   // Open input image with leptonica library
   Pix *image = pixRead("/usr/src/tesseract-3.02/phototest.tif");
   api->SetImage(image);
   // Get OCR result
   outText = api->GetUTF8Text();
   printf("OCR output:\n%s", outText);

   // Destroy used object and release memory
   api->End();
   delete [] outText;
   pixDestroy(&image);

   return 0;
}

I've changed the include commands slightly to help point where the header files actually are on my computer. I compile using:

g++ -I /home/ggdhines/github/ -I /home/ggdhines/github/python-tesseract/vs2008/includes/tesseract/ -I /home/ggdhines/source_code/ tess.cpp

The first two -I's are for tesseract headers, the third is for leptonica. 

I then get the following errors:

/home/ggdhines/github/tesseract/api/baseapi.h:96:9: error: ‘TessCallback4’ does not name a type

 typedef TessCallback4<const UNICHARSET &, int, PageIterator *, Pix *>

         ^

/home/ggdhines/github/tesseract/api/baseapi.h:747:26: error: ‘TruthCallback’ has not been declared

   void InitTruthCallback(TruthCallback *cb) { truth_cb_ = cb; }

                          ^

/home/ggdhines/github/tesseract/api/baseapi.h:865:3: error: ‘TruthCallback’ does not name a type

   TruthCallback *truth_cb_;           /// fxn for setting truth_* in WERD_RES

   ^

/home/ggdhines/github/tesseract/api/baseapi.h: In member function ‘void tesseract::TessBaseAPI::InitTruthCallback(int*)’:

/home/ggdhines/github/tesseract/api/baseapi.h:747:47: error: ‘truth_cb_’ was not declared in this scope

   void InitTruthCallback(TruthCallback *cb) { truth_cb_ = cb; }

Any suggestions would be welcome.

Thanks,

Greg Hines

[flavi...@gmail.com]

Hi. Have you solved your problem ? Do you have whole source code on cloud ? Or on local HDD ?