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<p class=MsoNormal><font size=1 face=Arial><span lang=EN-GB style='font-size:
9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:EN-GB'>Dear
</span></font><st1:PersonName><font size=1 face=Arial><span lang=EN-GB
style='font-size:9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:
EN-GB'>ITK</span></font></st1:PersonName><font size=1 face=Arial><span
lang=EN-GB style='font-size:9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;
mso-ansi-language:EN-GB'> users,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-GB style='font-size:
9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:EN-GB'>Maybe
this question is not so appropriate to put in this <span class=SpellE>maillist</span>.
However I do believe that there are some cool guys<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=1 face=Arial><span lang=EN-GB
style='font-size:9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:
EN-GB'>in</span></font></span><font size=1 face=Arial><span lang=EN-GB
style='font-size:9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:
EN-GB'> this list who can answer my question.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-GB style='font-size:
9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:EN-GB'>The
assumption is that if the curve is smooth, then its Fourier Transform will<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=1 face=Arial><span lang=EN-GB
style='font-size:9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:
EN-GB'>have</span></font></span><font size=1 face=Arial><span lang=EN-GB
style='font-size:9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:
EN-GB'> high value in low frequency bands and low value in high frequency
bands. I want to use this method to measure <o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=1 face=Arial><span lang=EN-GB
style='font-size:9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:
EN-GB'>the</span></font></span><font size=1 face=Arial><span lang=EN-GB
style='font-size:9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:
EN-GB'> smoothness of one curve. And I get the Fourier Transform of one curve
by the <span class=SpellE>itk</span> class.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-GB style='font-size:
9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:EN-GB'>My
question is: is there a good method that can evaluate the bias of the Fourier
spectrum and give a <span class=SpellE>quantitive</span> result <o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=1 face=Arial><span lang=EN-GB
style='font-size:9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:
EN-GB'>for</span></font></span><font size=1 face=Arial><span lang=EN-GB
style='font-size:9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:
EN-GB'> this issue?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-GB style='font-size:
9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:EN-GB'>I’m
looking forward your suggestions and hints. Thanks a lot!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-GB style='font-size:
9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:EN-GB'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-GB style='font-size:
9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:EN-GB'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-GB style='font-size:
9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:EN-GB'><o:p> </o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><font size=1 face=Arial><span lang=EN-GB
style='font-size:9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:
EN-GB'>Jiang</span></font></span><font size=1 face=Arial><span lang=EN-GB
style='font-size:9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:
EN-GB'><o:p></o:p></span></font></p>
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