DragonFly On-Line Manual Pages

breduce(1)             DragonFly 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 reduction 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
              integer.  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)