Interpolation-free scanning and sampling scheme for tomographic reconstructions

K. D. Donohue, J. Saniie

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


In this paper a sampling scheme is developed for computer tomography (CT) systems that eliminates the need for interpolation. A set of projection angles along with their corresponding sampling rates are derived from the geometry of the Cartesian grid such that no interpolation is required to calculate the final image points for the display grid. A discussion is presented on the choice of an optimal set of projection angles that will maintain a resolution comparable to a sampling scheme of regular measurement geometry, while minimizing the computational load. The interpolation-free scanning and sampling (IFSS) scheme developed here is compared to a typical sampling scheme of regular measurement geometry through a computer simulation.

Original languageEnglish
Pages (from-to)62-69
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - Jan 1 1987

Bibliographical note

Funding Information:
Kevin D. Donohue is supported by an American Electronics Association Fellowship while he is working on his Ph.D. in the Department of Electrical and Computer Engineering at Illinois Institute of Technology.

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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