<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div>Hello,</div><div><br></div><div>I am afraid that you are correct that SimpleITK does not have that FFT filter.</div><div><br></div><div>ITK has the FFTComplexToComplexImageFilter[1]. However if I recall correctly that requires FFTW which simpleITK can not be build against for distribution.</div><div><br></div><div>Brad</div><div><br></div><div>[1] <a href="http://www.itk.org/Doxygen/html/classitk_1_1FFTComplexToComplexImageFilter.html">http://www.itk.org/Doxygen/html/classitk_1_1FFTComplexToComplexImageFilter.html</a></div><div><div>On May 20, 2014, at 11:34 AM, <a href="mailto:Robert.Atwood@diamond.ac.uk">Robert.Atwood@diamond.ac.uk</a> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;">However if simpleITK doesn't have a complex-to-complex FFT it won't actually handle the whole algorithm that way!<span class="Apple-converted-space"> </span></span></div></blockquote></div><br></body></html>