|Ppmrelief User Manual(0)||Ppmrelief User Manual(0)|
ppmrelief - compute a relief of a PPM image
This program is part of Netpbm(1).
ppmrelief reads a PPM image as input, and writes a relief of that image as a PPM image as output.
The relief process is described in "Beyond Photography" by Holzmann, equation 3.19. It's a sort of edge-detection and is essentially a convolution with this matrix:
| 1 0 0 |
| 0 0 0 |
| 0 0 -1 |
pamshadedrelief(1), pgmbentley(1), pgmoil(1), ppm(1)
Copyright (C) 1990 by Wilson Bent (firstname.lastname@example.org)
This manual page was generated by the Netpbm tool 'makeman' from HTML source. The master documentation is at
|02 August 2014||netpbm documentation|