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How can I count the color pages and the b/w pages?

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PDF_User

Post subject: How can I count the color pages and the b/w pages?

Posted: Tue Jul 29, 2008 8:55 am

Joined: Tue Jul 29, 2008 8:49 am
Posts: 1

How can I check with PDFSharp if a page contains images and text in color or only black/white objects?

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alin_edric

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Posted: Mon Oct 06, 2008 11:00 am

Joined: Mon Oct 06, 2008 10:24 am
Posts: 3

also very interested in this. if anyone has an idea, please post

regards,

alin.

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PeterGillespie

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Posted: Fri Nov 07, 2008 10:44 am

Joined: Tue Oct 14, 2008 1:08 pm
Posts: 8
Location: England

The only way I have ever heard of being able to accomplish this is to turn the PDF file into an image (e.g. bitmap etc.., you can use Ghostscript to do this) then analyse each pixel for it colour ( you can do this using System.Drawing).

If there is an easier way then I would also be very interested to hear it, as the above method is a rather large chore. I know that PDFsharp was originally based on GDI+ so this may indeed be possible (although I have not noticed it).

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