List of threeDimensionalBackward() Examples

Examples of threeDimensionalBackward()

jfftw.FFTWReal.threeDimensionalBackward()

Method to take the three dimensional backward DFT of a hermition complex DFT held in a double array with real/imag parts in even/odd elements, with the i,j Complex components in

Real part located at 2(k x wft x height + j x wft + i)
Imag part located at 2(k x wft x height + j x wft + i) + 1
where wft = width/2 + 1.

The transformed real data is returned in a one-dimensional double array with pixel i,j located at element k x width x height + j x width + i. @param width the cube width @param height the cube height @param depth the cube depth @param complexArray Fourier data packed in a 1-d array. @param realArray real output array, must be of length width*height*depth. If null or wrong length, then a new array will be allocated. @return double[] DFT packed into one dimensional array @throws IllegalArgumentException if width, height, depth isnot consistent with array length.

    //          return a double[] which hold Hermition 
    //          complex array in interleaved format.
    double ft[] = fftw.threeDimensionalForward(width,height,depth,d);
    
    //          Reconstruct, again out of place, back to real space
    double recon[] = fftw.threeDimensionalBackward(width,height,depth,ft);
    
    //          Scale the inverse by 1/N to (no scale in FFTW)
    //          Use ArrayUtil class to do the work.
    ArrayUtil.mult(recon,1.0/(width*height*depth));

    //          return a double[] which hold Hermition 
    //          complex array in interleaved format.
    float ft[] = fftw.threeDimensionalForward(width,height,depth,d);
    
    //          Reconstruct, again out of place, back to real space
    float recon[] = fftw.threeDimensionalBackward(width,height,depth,ft);
    
    //          Scale the inverse by 1/N to (no scale in FFTW)
    //          Use ArrayUtil class to do the work.
    ArrayUtil.mult(recon,(float)(1.0/(width*height*depth)));
    // for (int i=0;i<recon.length;i++) {

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Examples of threeDimensionalBackward()

Examples of jfftw.FFTWReal.threeDimensionalBackward()

Examples of jfftw.FFTWReal.threeDimensionalBackward()