Fourier Transformation of a 3D DICOM Image

Questions
1

Hi, I’m new to Mathematica. I’ve a 3D DICOM image and I want to get the corresponding k-space applying Fourier Transformation. Can anyone explain me with a sample code?

2

Here is a 3D DICOM file:

dcmFile = Export["CThead.dcm", Import["ExampleData/CThead.tiff", "ImageList"]];

You can use this code to compute the power spectrum of a 3D image:

ImagePeriodogram[Image3D[Import[dcmFile]]] // Image3DSlices
3

Thanks for your reply. I’ve used

img_ft = Fourier[ImageData[img], FourierParameters → {1, 1}]
Image[Abs[img_ft]]

But can’t get the output as using ImagePeriodogram. Any suggestion?

4

Take a look at “Use logarithmic scaling to visualize the power spectra of an image” example in PeriodogramArray: Power spectrum values of a signal—Wolfram Documentation

5

I need all the amplitude, frequency and phase information of the image in the fourier domain. How can I do this using ImagePeriodogram?

6

You need to use Fourier to compute these properties.