Removing text and graphics based on color

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   I have several thousand PDF files which are student workbook pages that include questions.  These pages contain the answers to the questions in the form of text, graphics that represent circled answers, lines that connect answers to questions, etc.  I need to create versions of the files with the answers removed.  Cany anyone offer an approach for tihs using Quick PDF Library 7.21?  Thanks in advance.

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dengarrett Members Profile Find Members Posts Beginner Joined: 01 Oct 09 Location: United States Status: Offline Points: 3	Post Options Post Reply Quote dengarrett Report Post Thanks(0) Quote Reply Topic: Removing text and graphics based on color Posted: 30 Sep 10 at 2:39PM
	I have several thousand PDF files which are student workbook pages that include questions. These pages contain the answers to the questions in the form of text, graphics that represent circled answers, lines that connect answers to questions, etc. I need to create versions of the files with the answers removed. Cany anyone offer an approach for tihs using Quick PDF Library 7.21? Thanks in advance.

Ingo Members Profile Find Members Posts Moderator Group Joined: 29 Oct 05 Status: Offline Points: 3530	Post Options Post Reply Quote Ingo Report Post Thanks(0) Quote Reply Posted: 30 Sep 10 at 3:44PM
	Hi! With QP you can overwrite it - not remove. Another thing (annoying): Render the pages to images... Paint on the images... Render images to pdf Cheers, Ingo

dengarrett Members Profile Find Members Posts Beginner Joined: 01 Oct 09 Location: United States Status: Offline Points: 3	Post Options Post Reply Quote dengarrett Report Post Thanks(0) Quote Reply Posted: 30 Sep 10 at 3:52PM
	Thank you very much for the quick reply. A couple of questions: 1. Overwriting is probably the best option - how can I programatically obtain the paths needed to overwrite? They are at random locatons on the page. The only thing in common that I can find is the color. 2. I thought about rendering to a DC and then manipulating the bits, but I am concerned about the size of the resulting PDF file. I need to fit thousands of the PDF files on a single CD (not DVD) along with custom software installer for both Mac and Windows.

dengarrett Members Profile Find Members Posts Beginner Joined: 01 Oct 09 Location: United States Status: Offline Points: 3	Post Options Post Reply Quote dengarrett Report Post Thanks(0) Quote Reply Posted: 30 Sep 10 at 5:06PM
	I could offer a payment to anyone that can help find a workable solution.

Ingo Members Profile Find Members Posts Moderator Group Joined: 29 Oct 05 Status: Offline Points: 3530	Post Options Post Reply Quote Ingo Report Post Thanks(0) Quote Reply Posted: 30 Sep 10 at 10:29PM
	Hi! If you don't do it by yourself you won't learn about easy working with QP ;-) If you want to know the positions of special text (to be overwrited) you should use the extract functions for the textcontent. With option "3" you'll get the text with all position data, textcolour, fonttype and dimensions. With this data you can overwrite pretty precise. Cheers, Ingo