Changeset 364
- Timestamp:
- Mar 31, 2004, 11:23:34 PM (22 years ago)
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trunk/doc/pslib/psLibADD.tex (modified) (2 diffs)
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trunk/doc/pslib/psLibADD.tex
r356 r364 1 %%% $Id: psLibADD.tex,v 1.1 0 2004-04-01 08:29:31 eugene Exp $1 %%% $Id: psLibADD.tex,v 1.11 2004-04-01 09:23:34 price Exp $ 2 2 \documentclass[panstarrs]{panstarrs} 3 3 … … 596 596 \paragraph{More Complicated Functions} 597 597 598 The \code{psFFTFilter()} and \code{psFFTFilterComplex()} functions provide599 the means to apply a filter (purely real and imaginary multipliers,600 respectively) to the data in the Fourier plane. If the filter601 function specified for \code{psFFTFilter()} returns a real value, $r$,602 then the corresponding value in the Fourier plane should be multiplied603 by $r$. If the real and imaginary filter functions specified for604 \code{psFFTFilterComplex()} return the values $r$ and $s$, respectively,605 then the corresponding value in the Fourier plane should be multiplied606 by the complex number $r + si$.607 608 598 \code{psFFTCrossCorrelate()} and \code{psFFTConvolve()} both involve 609 599 multiplication of two Fourier transforms. In the former, the first
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