Ppmrelief User Manual(0) Ppmrelief User Manual(0) NAME ppmrelief - run a Laplacian relief filter on a PPM image SYNOPSIS ppmrelief [ppmfile] DESCRIPTION This program is part of Netpbm(1) ppmrelief reads a PPM image as input, does a Laplacian relief filter, and writes a PPM image 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) netpbm documentation 11 January 1991 Ppmrelief User Manual(0)