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Martin Coath edited Figure_ref_fig_gaborfine_shows__.tex
about 8 years ago
Commit id: f4ece6ef96a82dda1d456397e84b2f042fe17484
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Figure~\ref{fig:gaborfine} shows four Gabor patches with double the spatial frequency of Figure~\ref{fig:gaborcoarse}, i.e. 40 cycles per frame, and the resulting \textsc{skv} representation at two window sizes in the same way. The \textsc{skv}$_{50}$ in Figure~\ref{fig:gaborfine}(b) shows a result which is very like the original, the onsets and offsets are close but distinct, so there is again evidence of the frequency doubling.
However the \textsc{skv}$_{10}$ in Figure~\ref{fig:gaborfine}(c) produces results which need to be considered carefully. For the 0$^\circ$ and 90$^\circ$ patches the ripples of the Gabor extend far enough in the direction of calculation to appear as
a large
features and as features. As a result,
the individual ripples exhibit large onsets and offsets on this
scale. As a result scale and the \textsc{skv}$_{10}$ result is separating in to two dark patches representing the beginning and end of each ripple
and \textit{and} the patch \textit{as a whole}. The 45$^\circ$ and 135$^\circ$ patches have no features that extend in the direction of calculation so they fade almost to nothing.