On 2014-09-17 18:31, ExactCODE wrote: > thank you for your email. I went thru old emails and quickly added > --compress and --quality to the hocr2pdf fronted. I hope --compress > flate with your file produces reasonable results. If not let me know > with an example images and I take a look.
I managed to compile exact-image on Ubuntu after installing the packages 'libagg-dev' and 'freeglut3-dev'. There doesn't seem to be a configure check for libglut, by the way: 'make' just stopped with the message "/usr/bin/ld: cannot find -lglut" when linking objdir/frontends/bardecode. Anyway, --compress flate works quite well! It doesn't give me the same compression as the original PNG input file, but at least it is not lossy anymore, which was the most important thing to me. Here are the numbers. The input was a 2480 x 3508 pixel PNG file (A4 document with mostly B/W text). Original PNG: 471 kB PDF created by hocr2pdf 0.8.9: 760 kB PDF created by hocr2pdf from trunk, without --compress: 696 kB PDF created by hocr2pdf from trunk, with --compress flate: 565 kB Oh, and by the way: The help message says the supported methods are G3, G4 and Zip, but none of those work. Looking at pdf.cc, it seems that this list should actually be ascii85, hex, flate, jpeg, jpeg2000. Thanks a lot for getting this implemented! Marcel ----------------------------------------------------------- If you wish to unsubscribe from this mailing, send mail to [email protected] with a subject of: unsubscribe exact-image
