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)