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. 1991;10(3):473-8.
doi: 10.1109/42.97598.

Selection of a convolution function for Fourier inversion using gridding [computerised tomography application]

J I Jackson  1 , C H Meyer, D G Nishimura, A Macovski
Affiliations

Selection of a convolution function for Fourier inversion using gridding [computerised tomography application]

J I Jackson et al. IEEE Trans Med Imaging. 1991.

Abstract

In the technique known as gridding, the data samples are weighted for sampling density and convolved with a finite kernel, then resampled on a grid preparatory to a fast Fourier transform. The authors compare the artifact introduced into the image for various convolving functions of different sizes, including the Kaiser-Bessel window and the zero-order prolate spheroidal wave function (PSWF). They also show a convolving function that improves upon the PSWF in some circumstances.

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