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The Lanczos window is the central lobe of a sinc function scaled to a
certain extend.
![\begin{displaymath}
\textrm{Lanczos}(x,\tau)=\left \{ \begin{array}{cl}
\frac{\s...
...\vert x\vert < \tau$}\\
0 & \textrm{else}
\end{array} \right.
\end{displaymath}](img32.gif) |
(11) |
Turkowski [19] reported it being superior for
two-dimensional image resampling tasks, i.e. using it to bound the
sinc function. However, using it to bound the cosc function is also
possible, although the frequency response shows a little bump
above
.
1999-04-08