autotrace : A program for converting bitmaps to vector graphics ( http://autotrace.sourceforge.net/ )
pstoedit : Translate PostScript and PDF graphics into other vector formats ( https://sourceforge.net/projects/pstoedit/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a han
For Paludis use this rsync : rsync://gentoo.zugaina.org/han-portage
If you have a problem : ycarus(-at-)zugaina.org