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| ppmrelief(1) | General Commands Manual | ppmrelief(1) |
NAME¶
ppmrelief - run a Laplacian relief filter on a portable pixmapSYNOPSIS¶
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)| 11 January 1991 |