- \item Filter Parameter \par
- Sets the alpha level for Hamming
- window. At setting of 0.54, this equals the Hanning window.
-
- \item Filter Method
- \begin{itemize}\itemsep=0pt
- \item convolution
- \item fourier
- \item fourier_table
- \item fftw
- \item rfftw
- \end{itemize}
-
- \item Filter Generation
- \begin{itemize}\itemsep=0pt
- \item direct
- \item inverse_fourier
- \end{itemize}
-
- \item Interpolation
- \begin{itemize}\itemsep=0pt
- \item nearest
- \item linear
- \end{itemize}
-
- \item Backprojection
- \begin{itemize}\itemsep=0pt
- \item trig
- \item table
- \item diff
- \item diff2
- \item idiff2
- \item idiff3
- \end{itemize}
-
- \item Zeropad
- \item Preinterpolation Factor
+\twocolitem{{\bf --filter-generation}}{Selects the filter generation. With convolution, {\tt direct} is the proper method to select. With any of the frequency methods, {\tt inverse-fourier} is the best method.
+\begin{itemize}\itemsep=0pt
+\item direct
+\item inverse-fourier
+\end{itemize}
+}
+\twocolitem{{\bf --interpolation}}{Interpolation technique. {\tt linear} is optimal.
+\begin{itemize}\itemsep=0pt
+\item nearest
+\item linear