[poppler] Extracting word and image position from PDF (Albert Astals Cid)

[Albert Astals Cid]

El Dijous, 16 de febrer de 2012, a les 22:51:10, Dan Filimon va escriure:
> >> I've been looking for ways to extract image and word positions (also
> >> how words form sentences and paragraphs would be useful) from a PDF.
> >> I'd like to get maps of words/images to rectangles (position, width,
> >> height).
> >> 
> >> Also, it would really be great if I could get the positions and
> >> hierarchy for every object on a page (sorry about my vague terminology
> >> when it comes to PDF, I've never worked with it). I tried looking at
> >> the code but there don't seem to be many comments and I can't find any
> >> documentation...
> >> 
> >> Could you please point me in the right direction?
> > 
> > Poppler::Page::textList seems to be what you want
> > 
> > http://people.freedesktop.org/~aacid/docs/qt4/classPoppler_1_1Page.html#
> > a75dea3bf58f339f224239b757b4c1bb2
> > 
> > Albert
> 
> Thanks for the quick reply!
> 
> Yes, that seems to be exactly what I'm looking for, but there doesn't
> seem to be a corresponding one for images.
> Actually, there doesn't seem to be any dedicated image class (well,
> besides QImage), and I can't seem to figure out how to get images from
> a Page... I can see that there is support for rendering part of a page
> to a QImage though.
> I've managed to find some image generating code looking through the
> utils/ folder in ImageOutputDev, but that seems to be using XPdf
> directly and I can't find any documentation for that either.