Take the 2-minute tour ×  I have the following code  Image[img,
ImageSize -> 300] data = ImageData[img]; fdct = Fourier[data]
tdata = InverseFourier[fdct];  but it seems to fail when doing
the inverseFourier function. The error I get is:
Image::imgarray: The specified argument {{{1. -2.0236*10^-17
I,1. -9.36654*10^-17 I,1. -3.45228*10^-17
I},<<49>>,<<330>>},{<<1>>},<<47>>,{{1. +4.61893*10^-17 I,<<19>>
+<<24>> I,1. +7.44929*10^-17 I},<<49>>,<<330>>},<<330>>} should
be an array of rank 2 or 3 with machine-sized numbers. >>  I'm
actually not sure what I'm doing wrong as I've checked the
"discrete fourier transforms" (http://reference.wolfram.com/math
ematica/tutorial/FourierTransforms.html) and the output of
fourier was just used in the inverseFourier to get the
inverse...  Any ideas what is wrong here?  share|improve this
question Seems like you're right... Chopping values of solved
the issue. –  markovuksanovic Jul 27 '13 at 7:26  1 Answer 1  up
vote 2 down vote accepted  tdata acquired small imaginary parts.