pnmenlarge(1) [linux man page]

pnmenlarge(1)						      General Commands Manual						     pnmenlarge(1)

NAME

       pnmenlarge - read a portable anymap and enlarge it N times

SYNOPSIS

       pnmenlarge N [pnmfile]

DESCRIPTION

       Reads a portable anymap as input.  Replicates its pixels N times, and produces a portable anymap as output.

       pnmenlarge  can only enlarge by integer factors.  The slower but more general pnmscale can enlarge or reduce by arbitrary factors, and pbm-
       reduce can reduce by integer factors, but only for bitmaps.

       If you enlarge by a factor of 3 or more, you should probably add a pnmsmooth step; otherwise, you  can  see  the  original  pixels  in  the
       resulting image.

SEE ALSO

       pbmreduce(1), pnmscale(1), pnmsmooth(1), pnm(5)

AUTHOR

       Copyright (C) 1989 by Jef Poskanzer.

								 26 February 1989						     pnmenlarge(1)

fstopgm(1)                                                    General Commands Manual                                                   fstopgm(1)

NAME

       fstopgm - convert a Usenix FaceSaver(tm) file into a portable graymap

SYNOPSIS

       fstopgm [fsfile]

DESCRIPTION

       Reads a Usenix FaceSaver(tm) file as input.  Produces a portable graymap as output.

       FaceSaver(tm)  files sometimes have rectangular pixels.  While fstopgm won't re-scale them into square pixels for you, it will give you the
       precise pnmscale command that will do the job.  Because of this, reading a FaceSaver(tm) image is a two-step process.  First you do:
         fstopgm > /dev/null
       This will tell you whether you need to use pnmscale.  Then use one of the following pipelines:
         fstopgm | pgmnorm
         fstopgm | pnmscale -whatever | pgmnorm
       To go to PBM, you want something more like one of these:
         fstopgm | pnmenlarge 3 | pgmnorm | pgmtopbm
         fstopgm | pnmenlarge 3 | pnmscale <whatever> | pgmnorm | pgmtopbm
       You want to enlarge when going to a bitmap because otherwise you lose information; but enlarging by more than 3 does not look good.

       FaceSaver is a registered trademark of Metron Computerware Ltd. of Oakland, CA.

SEE ALSO

       pgmtofs(1), pgm(5), pgmnorm(1), pnmenlarge(1), pnmscale(1), pgmtopbm(1)

AUTHOR

       Copyright (C) 1989 by Jef Poskanzer.

                                                                    06 April 89                                                         fstopgm(1)