Previously I searched google to find an the PDF you'd mentioned, did you check to see if the one I used in my example was the same? If it wasn't why not provide an actual example of what you're trying to do? Since you're still not forthcoming with any information and I'm still not able to read minds, I'd suggest reading up on OCR and Tesseract. You may actually have to do some of your own research rather than just asking questions which roughly relate to your task.