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breduce(1)		     General Commands Manual		      breduce(1)

NAME
     breduce - read a portable bitmap and reduce it to 1/N

SYNOPSIS
     breduce [-options] in_file | - [out_file]

DESCRIPTION
     breduce  reads  a	portable bitmap as input, reduces it by a factor of 1/N,
     and produces a portable bitmap as output.

     This program is similar to pbmreduce(4), but is  specialized  for	Document
     Image  Processing.  Black pixels have priority over white pixels on the re-
     duction process. Consequently, thin black lines are kept continuous on  the
     image, while thin white lines may be broken.

     If  the  string  "-" is passed instead of in_file, breduce reads image from
     standard input.  If the output file  out_file  is	not  specified,  breduce
     writes image to standard output.

OPTIONS
     -div N
	    Division factor. The image is reduced to 1/N.  Note that N is an in-
	    teger.  The default value is N=2.

     -quiet
	    Suppress messages.

SEE ALSO
     pbm(5), pbmreduce(5)

AUTHOR
     Copyright (C) 1994-1997 Hideaki Goto

     E-Mail: hgot@ecip.tohoku.ac.jp, hgot@aso.ecei.tohoku.ac.jp

				    Feb. 1997			      breduce(1)

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