\ .\" This man page was generated by the Netpbm tool 'makeman' from HTML source. .\" Do not hand-hack it! If you have bug fixes or improvements, please find .\" the corresponding HTML page on the Netpbm website, generate a patch .\" against that, and send it to the Netpbm maintainer. .TH "Ppmdim User Manual" 0 "June 2002" "netpbm documentation" .SH NAME ppmdim - dim a PPM image .UN synopsis .SH SYNOPSIS ppmdim \fIdimfactor\fP [\fIppmfile\fP] .UN description .SH DESCRIPTION .PP This program is part of .BR Netpbm (1) . .PP This program is largely obsoleted by the more general .BR \fBpamfunc\fP (1) (use the \fB-multiplier\fP option). \fBppmdim\fP remains for backward compatibility and also because its use of integer arithmetic may make it faster. \fBppmdim\fP reads a PPM image input and diminishes its brightness by the specified dimfactor. The dimfactor may be in the range from 0.0 (total blackness, deep night, nada, null, nothing) to 1.0 (original picture's brightness). .UN seealso .SH SEE ALSO .BR ppm (5) , .BR pamfunc (1) , .UN author .SH AUTHOR Copyright (C) 1993 by Frank Neumann