diff options
Diffstat (limited to 'pnmconvol.html')
| -rw-r--r-- | pnmconvol.html | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/pnmconvol.html b/pnmconvol.html index ad0e56f6..556f80a8 100644 --- a/pnmconvol.html +++ b/pnmconvol.html @@ -259,6 +259,22 @@ convolution gets applied to each color component. However, if you want to use a PPM and do a different convolution to different colors, you can certainly do that. + +<h3 id="otherconvol">Other Forms of Convolution</h3> + +<p><b>pnmconvol</b> does only arithmetic, linear combination convolution. +There are other forms of convolution that are especially useful in image +processing. + +<p><b>pgmmedian</b> does median filtering, which is a form of convolution +where the output pixel value, rather than being a linear combination of the +pixels in the window, is the median of a certain subset of them. + +<p><b>pgmmorphconv</b> does dilation and erosion, which is like the median +filter but the output value is the minimum or maximum of the values in the +window. + + <H2 id="options">OPTIONS</H2> <DL COMPACT> @@ -335,6 +351,7 @@ the maxval. <B><A HREF="pnmsmooth.html">pnmsmooth</A></B>, <B><A HREF="pgmmorphconv.html">pgmmorphconv</A></B>, +<B><A HREF="pgmmedian.html">pgmmedian</A></B>, <B><A HREF="pnmnlfilt.html">pnmnlfilt</A></B>, <B><A HREF="pgmkernel.html">pgmkernel</A></B>, <B><A HREF="pamgauss.html">pamgauss</A></B>, |