List of twoDimensionalForward() Examples

Examples of twoDimensionalForward()

jfftw.FFTWReal.twoDimensionalForward()

Method to take the two-dimensional Forward FFT of a real data held in one dimensional double array. The i,j pixel of the real image is located in array element j*width + i.

The Complex FFT is returned in a double array with real/imag parts in even/odd elements, with the k,l Complex components with:

Real part in location 2(l x wft + k)
Imag part in location 2(l x wft + k) + 1
where wft = width/2 + 1 @param width the image width. @param height the image height. @param realArray the image data in double[] of length width*height. @param complexArray the output array of length 2*height*(width/2 + 1) . If null or wrong length, then a new array will be created. @return double[] DFT packed into one dimensional array @throws IllegalArgumentException ifwidth*height does not match the array length.

      20, 21, 22, 23, 24,
    };


    FFTWReal fftwReal = new FFTWReal();
    
    dInterm = fftwReal.twoDimensionalForward(5, 5, dData);
    dResult = fftwReal.twoDimensionalBackward(5, 5, dInterm);


    for (int i=0;i<dResult.length;i++) {
      assertEquals(dData[i], dResult[i]/25.0, 0.000001);
    }

      20, 21, 22, 23, 24,
    };


    FFTWReal fftwReal = new FFTWReal();
    
    fInterm = fftwReal.twoDimensionalForward(5, 5, fData);
    fResult = fftwReal.twoDimensionalBackward(5, 5, fInterm);


    for (int i=0;i<fResult.length;i++) {
      assertEquals(fData[i], fResult[i]/25.0, 0.000001);
    }

    };


    
    FFTWReal fftwReal = new FFTWReal();
    
    double [] interm = fftwReal.twoDimensionalForward(5,5, data);


    /*
    for (int i=0;i<dest.length;i++) {
      assertEquals(dest[i], result[i], 0.000001);
    }

    };


    
    FFTWReal fftwReal = new FFTWReal();
    
    float [] interm = fftwReal.twoDimensionalForward(5,5, data);


    /*
    for (int i=0;i<dest.length;i++) {
      assertEquals(dest[i], result[i], 0.000001);
    }

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Examples of twoDimensionalForward()

Examples of jfftw.FFTWReal.twoDimensionalForward()

Examples of jfftw.FFTWReal.twoDimensionalForward()

Examples of jfftw.FFTWReal.twoDimensionalForward()

Examples of jfftw.FFTWReal.twoDimensionalForward()