An alternative approach to direct Fourier reconstruction in parallel-beam tomography

A. Filiz Baytaş*, Melih Geçkinli

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


In this work, we elaborate on some of the features of the direct Fourier reconstruction method, which has not spurred much interest in the literature. We searched for the possibility of an interpolation in the object space prior to Fourier transformation of the projection. To implement this idea, the central slice theorem based on the finite Fourier transform is reconsidered for a density distribution of point weights placed over a square grid. Some industrial applications carried out on a scanner with a Cs-137 γ source are given to demonstrate and verify our algorithm. It is observed that the image resolution is improved over that obtainable by the application of the basic direct Fourier transform method.

Original languageEnglish
Pages (from-to)556-563
Number of pages8
JournalMeasurement Science and Technology
Issue number4
Publication statusPublished - Apr 1996


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