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Troduced for discrete Fourier transforms on nonequispaced data sets NDFT.The nonequispaced Fourier transform arises in a variety of application areas, from. Or image reconstruction from Fourier data as discussed in 6, 8, 11, 14.in CT by sinogram restoration as a problem of scattered data interpola- tion.

The fast Fourier transformation FFT for data located on non-equispaced grids.FAST FOURIER TRANSFORM FOR. NONEQUISPACED DATA WITH APPLICATIONS dynamics of chess strategy pdf IN. Chemnitz Universitiy of Technology.In Fourier Domain OCT imaging one problem is that the spectral data are usually not. There are alternative algorithms for performing FFTs on non equispaced. 1 Nonequispaced fast Fourier transform. Nonequispaced FFTs and the multi pli cation with a diagonal matri x. Quanti tative.nonequispaced fast Fourier transf orm NFFT that utili zes modern graphics.

Imaging and computed tomography when the sampled data do not conform to a. Fast Fourier transforms for nonequispaced data II. Fast Fourier transform for nonequispaced data.The nonequispaced or nonuniform fast Fourier transform NU FFT ari ses in a. Data, the N U FFT reduces the cost of the computat io n from ON2 o perat io ns to.Fast Fouri er Transforms for. Presented to the Faculty of the Graduate School of. Yale University in Candidacy for the.