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more comfortable screen reading

computer modern is a crap font for reading on screen..  it really
needs more body, so try this in gimp to simulate "paper blur" :

      - load page in gimp 300 dpi
      - gaussian blur 3x3
      - contrast +100 brightness -100

now.. how to make kpdf do this?

http://kpdf.kde.org/download.php
KDE SVN /branches/KDE/3.5/kdegraphics/kpdf/

 svn co https://svn.kde.org/home/kde/branches/KDE/3.5/kdegraphics/kpdf/

crap.. doesn't let me in.

just using the tarball then..
let's use debian's to get the right deps

apt-get source kpdf
cd kdegraphics-3.5.9
apt-get build-dep kpdf
dpkg-buildpackage

apparently it's based on xpdf quite literally: it contains xpdf as a
subtree.

anyways.. might be simpler to just write some wrappers around
pdftoppm.

ok: conclusions for now: it seems that for low rez, small text, it's
better to "let the ink run" a bit: blur followed by increase in
contrast: the text remains ligible longer.

the idea seems to be somthing like: text should _never_ become grey.
it's easier to fish out letters from a black-on-white though bold
blobby blur than a grey blur.

EDIT: Filter->Generic->Erode does a good job too.  The thing is: you
don't want to change much in pictures.. just makes lines thicker.


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