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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