General Discussion - GetBarcode

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GetBarcode

Printed From: Debenu Quick PDF Library - PDF SDK Community Forum
Category: For Users of the Library
Forum Name: General Discussion
Forum Description: Discussion board for Debenu Quick PDF Library and Debenu PDF Viewer SDK
URL: http://www.quickpdf.org/forum/forum_posts.asp?TID=2316
Printed Date: 22 Nov 24 at 11:20PM
Software Version: Web Wiz Forums 11.01 - http://www.webwizforums.com

Topic: GetBarcode

Posted By: xeli
Subject: GetBarcode
Date Posted: 25 Jun 12 at 12:11PM

Hi,

is it possible to Get a Barcode from a PDF File?

Regrads,

eli

Replies:

Posted By: Ingo
Date Posted: 25 Jun 12 at 9:03PM

Hi Eli!

QP can draw barcodes on the pdf.
If you want it back you'll need the coordinates
to render the relevant part of the page as an image.
If you need the real data you should add the barcode-
data in hidden self made custom field (like meta data).

Cheers and welcome here,
Ingo

Posted By: AndrewC
Date Posted: 26 Jun 12 at 7:33AM

It is not possible to extract a barcode from a PDF file using QuickPDF library because there are many different ways to draw barcodes - fonts, lines, patterns ....

You need to use an image processing library such as ClearImage from http://www.inliteresearch.com/products/imaging-barcode-recognition-sdk.php - http://www.inliteresearch.com/products/imaging-barcode-recognition-sdk.php - Quick PDF can be used to render the PDF to a graphics image which could then be passed into ClearImage. There are a few other barcode decoding libraries around that can detect and read barcodes such as BlackIce, Unisoft Imaging ...

Andrew.

Posted By: Ingo
Date Posted: 28 Nov 12 at 9:50PM

Hi!

It's a bit confused now ;-)
QuickPDF can't get a barcode from a pdf but it can render the
pdf to an image and for images there are other libraries for
grabbing the barcode from the images.
If you want to create a barcode on a pdf-page your first choice
should be QuickPDF ;)
http://www.quickpdflibrary.com/help/quickpdf/Barcodes.php

Cheers, Ingo