.TL Pgmbentley User Manual .SH 1 pgmbentley .LP Updated: 11 January 1991 .br Table Of Contents .SH 2 NAME .LP pgmbentley - Bentleyize a PGM image .SH 2 SYNOPSIS .LP \fBpgmbentley\fR [\fIpgmfile\fR] .SH 2 DESCRIPTION .LP .LP This program is part of Netpbm. .LP \fBpgmbentley\fRreads a PTM image as input and performs the Bentley Effect, and writes a PGM image as output. .LP The Bentley Effect is described in "Beyond Photography" by Holzmann, chapter 4, photo 4. It's a vertical smearing based on brightness. .SH 2 SEE ALSO .LP pgmoil, ppmrelief, pgm .SH 2 AUTHOR .LP Copyright (C) 1990 by Wilson Bent (whb@hoh-2.att.com) .br \l'5i' .SH 2 Table Of Contents .LP .IP \(bu NAME .IP \(bu SYNOPSIS .IP \(bu DESCRIPTION .IP \(bu SEE ALSO .IP \(bu AUTHOR .LP