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<div class=Section1 style='layout-grid:15.6pt'>
<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
itk-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'>I
tried to use Fourier decomposition as the new example:<o:p></o:p></span></font></p>
<p class=MsoNormal align=left style='text-align:left;mso-layout-grid-align:
none;text-autospace:none'><font size=2 face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;mso-font-kerning:0pt;mso-ansi-language:
EN-GB'>Insight/Examples/Numerics/<o:p></o:p></span></font></p>
<p class=MsoNormal align=left style='text-align:left;mso-layout-grid-align:
none;text-autospace:none'><font size=2 face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;mso-font-kerning:0pt;mso-ansi-language:
EN-GB'><span
style='mso-spacerun:yes'>
</span>FourierDescriptors1.cxx<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'>In
new CVS checkout.<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'>When
I input my data, for example, the number of points is 53, I will get the
following<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'>error
message:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial'>Assertion failed: !"you
probably gave a signal size not of the form 2^p 3^q 5^r",<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial'>file F:\</span></font><st1:PersonName><font
size=1 face=Arial><span lang=EN-US style='font-size:9.0pt;mso-bidi-font-size:
10.0pt;font-family:Arial'>ITK</span></font></st1:PersonName><font size=1
face=Arial><span lang=EN-US style='font-size:9.0pt;mso-bidi-font-size:10.0pt;
font-family:Arial'>\InsightToolkit-1.4.0\Utilities\vxl\vnl/algo/vnl_fft_prime_factors.txx,
line 25<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=DE style='font-size:9.0pt;
mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:DE'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=DE style='font-size:9.0pt;
mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:DE'>This error
happens at:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=DE style='font-size:9.0pt;
mso-bidi-font-size:10.0pt;font-family:Arial;mso-ansi-language:DE'><span
style='mso-tab-count:1'> </span></span></font><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'>typedef vnl_fft_1d< double
> FFTCalculator;<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'><span
style='mso-tab-count:1'> </span>FFTCalculator<span
style='mso-spacerun:yes'> </span>fftCalculator( numberOfPoints ); // If
numberOfPoints is 53<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><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial'>How should I do to figure
out this problem?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial'>Thank you very much!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;mso-bidi-font-size:10.0pt;font-family:Arial'>Chunyan Jiang<o:p></o:p></span></font></p>
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