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ppmrelief - run a Laplacian relief filter on a portable pixmap |
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ppmrelief [ppmfile] |
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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. |
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pgmbentley(1), pgmoil(1), ppm(5) |
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Copyright (C) 1990 by Wilson Bent (whb@hoh-2.att.com) |