# This sed script modifies the output of pnmtops such that distiller
# will not apply lossy JPEG DCT compression to the image.
# Markus Kuhn <http://www.cl.cam.ac.uk/~mgk25/publ-tips/> -- 2004-05-01
# WARNING: For ps2pdf, this works only for ghostscript-8.14 or newer,
# because of http://bugs.ghostscript.com/show_bug.cgi?id=563287
# Details:
#   - Acrobat Distiller Parameters, Technical Note #5151, Adobe.
#     http://partners.adobe.com/asn/acrobat/docs/distparm.pdf
#   - /usr/share/ghostscript/7.07/doc/Ps2pdf.htm (SuSE Linux 9.1)
#     /usr/share/doc/ghostscript-7.05/Ps2pdf.htm (Red Hat Linux 9)
#   - http://netpbm.sourceforge.net/doc/pnmtops.html
/^gsave$/a /setdistillerparams where {pop} {userdict /setdistillerparams {pop} put} ifelse 
/^gsave$/a << /AutoFilterGrayImages false /AutoFilterColorImages false
/^gsave$/a /ColorImageFilter /FlateEncode /GrayImageFilter /FlateEncode
/^gsave$/a >> setdistillerparams
/^grestore$/i << /AutoFilterGrayImages true /AutoFilterColorImages true >> setdistillerparams