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Diffstat (limited to 'ppmrelief.html')
| -rw-r--r-- | ppmrelief.html | 2 |
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diff --git a/ppmrelief.html b/ppmrelief.html index 9725f1f1..c9af17b1 100644 --- a/ppmrelief.html +++ b/ppmrelief.html @@ -23,7 +23,7 @@ ppmrelief - compute a relief of a PPM image <p><b>ppmrelief</b> reads a PPM image as input, and writes a relief of that image as a PPM image as output. -<P>The relief process is described in "Beyond Photography" by +<P>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: |