Linux Commands Examples

A great documentation place for Linux commands


run a Laplacian relief filter on a portable pixmap

see also : pgmbentley - pgmoil


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.

see also

pgmbentley , pgmoil , ppm


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