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.
>From what I remember none of the "public" frontends export the Image information. > > Also, after having cloned the Poppler repo, I'm not sure where to look > first. What I gather is that there are multiple backends and frontends for > Poppler. Backends like Cairo, Splash and frontends like Qt4, GLib and a > vanilla C++ one. Which of these should I use? The one you like better :D > I'd kind of like minimal dependencies, but I've used Qt4 in the past > and liked it. > > Which of these should I look at first (and actually, how do they all > fit together)? Qt4 and cpp frontends use splash backend, glib one uses cairo backend. Albert > > Sorry for being really noob-ish, but I just cant find any info :( > > Thanks! > Dan > _______________________________________________ > poppler mailing list > [email protected] > http://lists.freedesktop.org/mailman/listinfo/poppler _______________________________________________ poppler mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/poppler
