1Pamenlarge User Manual(0)                            Pamenlarge User Manual(0)
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NAME

6       pamenlarge - Enlarge a Netpbm image N times
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SYNOPSIS

10       pamenlarge N [pnmfile]
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DESCRIPTION

14       This program is part of Netpbm(1).
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16       pamenlarge  reads  a  Netpbm  image  as  input, replicates its pixels N
17       times, and produces a Netpbm image as output.  The output is  the  same
18       type of image as the input.
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20       If  you  enlarge  by  a  factor of 3 or more, you should probably add a
21       pnmsmooth step; otherwise, you can  see  the  original  pixels  in  the
22       resulting image.
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24       pamenlarge  can  enlarge  only by integer factors.  The slower but more
25       general pamscale can enlarge or reduce by arbitrary factors.   pamscale
26       allows  you to enlarge by resampling, which gives you smoother enlarge‐
27       ments.  But it is much slower.
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29       pamstretch is another enlarging program that enlarges by  integer  fac‐
30       tors.   It  does  a simple kind of resampling that gives you a smoothed
31       enlargement with less computational cost.
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33       pbmreduce can reduce by integer factors, but only for PBM images.
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HISTORY

37       pamenlarge was new in Netpbm 10.25 (October 2004).  It is designed as a
38       replacement  for  pnmenlarge  by Jef Poskanzer, which was in Pbmplus as
39       far back as 1989.  The major difference is that pamenlarge can  enlarge
40       PAM format images in addition to PNM.
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SEE ALSO

45       pbmreduce(1), pamscale(1), pamstretch(1), pnmsmooth(1), pnm(1)
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AUTHOR

49       Copyright (C) 1989 by Jef Poskanzer.
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53netpbm documentation           26 September 2004     Pamenlarge User Manual(0)