Martin Coath edited Figure_ref_fig_gaborfine_shows__.tex  about 8 years ago

Commit id: 06f5de0906b4ca387779e3d035d6ca6805d36b55

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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 large features. As a result, each individual ripple exhibits clear onsets and offsets on this scale, and the \textsc{skv}$_{10}$ result is separating separates  in to two dark patches representing the beginning and end of each ripple \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.