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13.3.5.1.3 Left Diagonal Edges
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13.3.5.1 Line detection
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13.3.5.1.1 Horizontal Edges
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13.3.5.1.2 Vertical Edges
2001-01-10
![\begin{displaymath}
\left[
\begin{array}{r r r}
-1 & 2 & -1 \\
-1 & 2 & -1 \\
-1 & 2 & -1 \\
\end{array}
\right]
\end{displaymath}](img401.gif)