Debenu Quick PDF Library - PDF SDK Community Forum : ocr - where is the recognized text? http://www.quickpdf.org/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Thu, 11 Jun 2026 21:14:25 +0000 Wed, 25 Nov 2015 07:56:36 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 11.01 360 www.quickpdf.org/forum/RSS_post_feed.asp?TID=2102 <![CDATA[Debenu Quick PDF Library - PDF SDK Community Forum]]> http://www.quickpdf.org/forum/forum_images/QPDF_Forum_Title.png http://www.quickpdf.org/forum/ <![CDATA[ocr - where is the recognized text? : AndrewC wrote:OCR text is often...]]> http://www.quickpdf.org/forum/ocr-where-is-the-recognized-text_topic2102_post12827.html#12827 Author: wubuer
Subject: 2102
Posted: 25 Nov 15 at 7:56AM

Originally posted by AndrewC AndrewC wrote:

OCR text is often inserted into an invisible text object that cannot be seen but can be extracted with GetPageText text extraction functions within QPL.

  int ret = QP.LoadFromFile("ocred.pdf", "");
  string s = QP.GetPageText(3);    // you can also try option 7 or 8.



thanks, it's help a lot.
]]> Wed, 25 Nov 2015 07:56:36 +0000 http://www.quickpdf.org/forum/ocr-where-is-the-recognized-text_topic2102_post12827.html#12827 <![CDATA[ocr - where is the recognized text? : Many thanks for your precious...]]> http://www.quickpdf.org/forum/ocr-where-is-the-recognized-text_topic2102_post8960.html#8960 Author: vladob
Subject: 2102
Posted: 17 Jan 12 at 7:43AM

Many thanks for your precious help
It works
Have a nice day
V.
]]> Tue, 17 Jan 2012 07:43:06 +0000 http://www.quickpdf.org/forum/ocr-where-is-the-recognized-text_topic2102_post8960.html#8960 <![CDATA[ocr - where is the recognized text? : OCR text is often inserted into...]]> http://www.quickpdf.org/forum/ocr-where-is-the-recognized-text_topic2102_post8959.html#8959 Author: AndrewC
Subject: 2102
Posted: 16 Jan 12 at 2:22PM

OCR text is often inserted into an invisible text object that cannot be seen but can be extracted with GetPageText text extraction functions within QPL.

  int ret = QP.LoadFromFile("ocred.pdf", "");
  string s = QP.GetPageText(3);    // you can also try option 7 or 8.


]]> Mon, 16 Jan 2012 14:22:44 +0000 http://www.quickpdf.org/forum/ocr-where-is-the-recognized-text_topic2102_post8959.html#8959 <![CDATA[ocr - where is the recognized text? : Hi Vladimir!Don&#039;t know if...]]> http://www.quickpdf.org/forum/ocr-where-is-the-recognized-text_topic2102_post8958.html#8958 Author: Ingo
Subject: 2102
Posted: 13 Jan 12 at 6:47PM

Hi Vladimir!

Don't know if i understand your question right but ...
First there's a scanned invoice for example.
It's scanned as an image to pdf first.
You can view this pdf via QuickPDF, changing properties and so on but textextraction isn't possible.
Then there are ocr-tools available going through this pdf making readable textcontent from the "image-pdf".
For this the "image-pdf" remains the same but additionally the ocr-tool inserts real textcontent.
Now you can extract this text with QuickPDF and things like fulltext search and others are possible.

With QuickPDF you can determine if there's an "ocr-ed" 'cause while textextraction there's an option to extract with fontnames... ocr-fonts are very special fonts and mostly inside the fontname there's an "ocr" too.
The other thing how to determine an ocr-pdf is:
If the inserted imagecount is the same than the pagecount and if the images have the same dimensions as the pages.

I hope i could help a little bit and perhaps now you have further ideas ;-)

Cheers and welcome here,
Ingo
 
]]> Fri, 13 Jan 2012 18:47:43 +0000 http://www.quickpdf.org/forum/ocr-where-is-the-recognized-text_topic2102_post8958.html#8958 <![CDATA[ocr - where is the recognized text? : Hi all I have following question,...]]> http://www.quickpdf.org/forum/ocr-where-is-the-recognized-text_topic2102_post8957.html#8957 Author: vladob
Subject: 2102
Posted: 13 Jan 12 at 5:36PM

Hi all
 
I have following question, when you ask OCR software to read picture PDF (scanned pictures into PDF), OCR engines inject recognized text into PDF file, can you let me know where? I mean how I can access those recognized text with QuickPDF?
 
Many thanks
 
 
Vladimir
]]> Fri, 13 Jan 2012 17:36:52 +0000 http://www.quickpdf.org/forum/ocr-where-is-the-recognized-text_topic2102_post8957.html#8957