Question about PDF manipulation

[Vintage Computer Festival]

This is sort of off-topic but it's for a Computer History Museum project
that involves old computer brochures.

We have a bunch of PDF's that have scanned brochure images contained
within including the OCR'd text.  Unfortunately, the PDF's were created
with images files that are much too large.  The images need to be
extracted, re-sized, then re-inserted into the PDF.  They can't use the
original photos because the ones inside the PDF have been cropped and
edited (independent of the originals...don't ask).

Is there a combination of utilities (i.e. ImageMagick, tumble, etc.) that
can automate this instead of having to re-create each PDF from scratch?
There are hundreds.

Thanks!

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Sellam Ismail                                        Vintage Computer Festival
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International Man of Intrigue and Danger                http://www.vintage.org

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