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Next: 13.3.5.2.2 West Up: 13.3.5.2 Gradient Detection (Embossing) Previous: 13.3.5.2 Gradient Detection (Embossing)

13.3.5.2.1 North

\begin{displaymath}\left[
\begin{array}{r r r}
-1 & -2 & -1 \\
0 & 0 & 0 \\
1 & 2 & 1 \\
\end{array}
\right]
\end{displaymath}



David Blythe
1999-08-06