Using TessPDFRenderer in tesseract 3.05 in C++

[Roger Jefferson]

I want to use tesseract 3.05 to generate searchable PDF programmatically in C++. Here is my code:

int main(int argc, const char * argv[])
{
    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);
    }
    Pix *image = pixRead("/Users/user1/pictures/page1.png");

    tesseract::TessResultRenderer* renderer = new tesseract::TessPDFRenderer("/Users/user1/Documents/", "/usr/local/share/tessdata");
    api->ProcessPage(image, 0, "/Users/user1/Documents/page1_pdf", NULL, 0, renderer);
    api->End();

    pixDestroy(&image);
    delete renderer;

    return 0;
}

The problem is everytime I get to api->ProcessPage() I keep getting assertion error:

size_used_ > 0:Error:Assert failed:in file ../ccutil/genericvector.h, line 696

Can anyone help? What's wrong? Is there a better way to generate PDF output?

Thanks in advance

[ShreeDevi Kumar]

Are you able to create pdfs using commandline?

ShreeDevi
____________________________________________________________
भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com

--
You received this message because you are subscribed to the Google Groups "tesseract-ocr" group.
To unsubscribe from this group and stop receiving emails from it, send an email to tesseract-ocr+unsubscribe@googlegroups.com.
To post to this group, send email to tesser...@googlegroups.com.
Visit this group at https://groups.google.com/group/tesseract-ocr.
To view this discussion on the web visit https://groups.google.com/d/msgid/tesseract-ocr/5e66b13b-5dce-4920-bbc8-dc16e201ef62%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

[Roger Jefferson]

The command line works OK but I need to integrate this. So, I need to do this in C++.

To unsubscribe from this group and stop receiving emails from it, send an email to tesseract-oc...@googlegroups.com.

[ShreeDevi Kumar]

take a look at  tesseractmain.cpp.

 

352  api->GetBoolVariable("tessedit_create_pdf", &b);

353  if (b) {

354  bool textonly;

355  api->GetBoolVariable("textonly_pdf", &textonly);

356  renderers->push_back(new tesseract::TessPDFRenderer(

357  outputbase, api->GetDatapath(), textonly));

358  }

359 

[Roger Jefferson]

Actually, things just work if I use the other constructor.

This is the constructor that works:

TessPDFRenderer(const char* outputbase, const char* datadir, bool textonly)

The other one failed.

Thanks for all the replies.