[OT] Extraction of info from PDF file

[Jesper Holmberg <jesper.holmberg@enst-bretagne.fr>]

I might be making a fool of myself by asking this, 
but is there any way of extracting information such 
as text and pictures out of a PDF file that anyone 
knows of? So far I haven't used PDF files to other 
things than view them, and occasionally print them, 
using xpdf, but now I need to cut and paste a piece 
of text and a couple of pictures from as PDF file. 

TIA

Jesper