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NAME

       pgmbentley - Bentleyize a portable graymap

SYNOPSIS

       pgmbentley [pgmfile]

DESCRIPTION

       Reads  a  portable  graymap as input.  Performs The Bentley Effect, and
       writes a portable graymap as output.

       The Bentley Effect is described in "Beyond  Photography"  by  Holzmann,
       chapter 4, photo 4.  It's a vertical smearing based on brightness.

SEE ALSO

       pgmoil(1), ppmrelief(1), pgm(5)

AUTHOR

       Copyright (C) 1990 by Wilson Bent (whb@hoh-2.att.com)

                                11 January 1991                  pgmbentley(1)