Re: image extraction problems -- PDF Explorer & PDF-ShellTools

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Subject:

Re: image extraction problems

Author:
RTT

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Date Posted: 18:16:51 07/07/04 Wed
In reply to: david crouch 's message, "image extraction problems" on 06:23:05 07/07/04 Wed

>Image extraction didn't seem to work on all PDFs.
>Does it only work on certain types of PDF images at
>certain DPIs? The PDFs I have are scans of documents
>at 150 DPI.

Image DPIs is not a problem. Those images are probably divided in several blocks of scan lines (technique used by some pdfs
creators) and Acrobat draws them in order to create the whole image. Each one of those blocks are inside pdf structure one
image object. PDF Explorer search for images objects inside pdf file and only extract if image object have more than one line.
Another problem is the format of the image object. PDF Explorer doesn't currently support all the formats now used by
Acrobat specifications. If you can link or email to me one of those files (a little one please) I can give you the correct
explanation to the problem.

>It would also be helpful to include the file name of
>the open PDF in the View and Images Tabs.

Filename is now (beta 1.5 in development stage) visualised in the program title bar.

>Also, extracting images to other formats (eg TIFF)
>with different DPIs would also be helpful.

For now this is not a "must have" function :-(

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