www.fifi.org
    Documentation
        Manpages
        GNU Info
        Debian document tree
        Whole document tree
    Trigance web page
    Public services
    User info
    Mailing lists
    Secure server
    Multilingual usage

Copyright (C) 2000-2012
Philippe Troin
<webmaster@fifi.org>.

Validate HTML
Validate CSS

Manpages

Manpage of ppmrelief

ppmrelief

Section: User Commands (1)
Updated: 11 January 1991
Index
Return to Main Contents

NAME

ppmrelief - run a Laplacian relief filter on a portable pixmap

SYNOPSIS

ppmrelief [ppmfile]

DESCRIPTION

Reads a portable pixmap as input. Does a Laplacian relief filter, and writes a portable pixmap as output.

The Laplacian relief filter is described in "Beyond Photography" by Holzmann, equation 3.19. It's a sort of edge-detection.

SEE ALSO

pgmbentley(1), pgmoil(1), ppm(5)

AUTHOR

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

Index

NAME
SYNOPSIS
DESCRIPTION
SEE ALSO
AUTHOR

This document was created by man2html, using the manual pages.
Time: 09:38:28 GMT, July 12, 2025