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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 72, Iss. 4 — Apr. 1, 1982
  • pp: 468–475

Dipole-sheet transform

Harrison H. Barrett  »View Author Affiliations

JOSA, Vol. 72, Issue 4, pp. 468-475 (1982)

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A new integral transform, derived from the three-dimensional Radon transform, is introduced. The basis functions for this transform, which may be physically interpreted as sheets of dipoles, are shown to be orthonormal and complete. The inverse transform is derived, and an expression for the Fourier transform of the basis functions is found. It is shown that all spherically symmetric functions retain the same functional form under this transform and that it can be used to reduce certain differential equations, such as the Helmholtz equation, to a spherically symmetric form, even if the original problem has no symmetry at all.

© 1982 Optical Society of America

Harrison H. Barrett, "Dipole-sheet transform," J. Opt. Soc. Am. 72, 468-475 (1982)

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  1. J. Radon, "Über die Bestimmung von Funktionen durch ihre Integralwerte längs gewisser Mannigfaltigkeiten," Ber. Verh. Saechs. Akad. Wiss. Leipzig, Math. Naturwiss. Kl. 69, 262–78 (1917).
  2. M. Y. Chiu, H. H. Barrett, and R. G. Simpson, "Three-dimensional reconstruction from planar projections," J. Opt. Soc. Am. 70, 755–762 (1980).
  3. H. H. Barrett and W. Swindell, Radiological Imaging: Theory of Image Formation, Detection and Processing (Academic, New York, 1981).
  4. E. Tanaka and T. A. linuma, "Image processing for coded aperture imaging and an attempt at rotating slit imaging," presented at Fourth International Conference on Information Processing in Scintigraphy, Orsay, France, July 1975.
  5. W. I. Keyes, "The fan-beam gamma camera," Phys. Med. Biol. 20, 489 (1975).
  6. G. R. Gindi, J. Arendt, H. H. Barrett, M. Y. Chiu, A. Ervin, C. L. Giles, M. A. Kujoory, E. L. Miller, and R. G. Simpson, "Imaging with rotating slit apertures and collimators," Med. Phys. (to be published).
  7. Y. Das and W. M. Boerner, "On radar target shape estimation using algorithms for reconstruction from projections," IEEE Trans. Antennas Propag. AP-26, 274–279 (1978).
  8. E. M. Kennaugh and D. L. Moffatt, "Transient and impulse response approximations," Proc. IEEE 53, 893–901 (1965).
  9. L. A. Shepp, "Computerized tomography and nuclear magnetic resonance," J. Comput. Assist. Tomog. 4, 94–107 (1980).
  10. H. H. Barrett, "Three-dimensional image reconstruction from planar projections, with application to optical data processing," presented at SPIE Advanced Institute on Transformations in Optical Signal Processing, Seattle, Washington, February 1981.
  11. R. Bracewell, The Fourier Transform and its Applications (McGraw-Hill, New York, 1965), p. 274.
  12. C. M. Vest and D. G. Steel, "Reconstruction of spherically symmetric objects from slit-imaged emission: application to spatially resolved spectroscopy," Opt. Lett. 3, 54–56 (1978).
  13. J. E. Greivenkamp, W. Swindell, A. F. Gmitro, and H. H. Barrett, "Incoherent optical processor for x-ray transaxial tomography," Appl. Opt. 20, 264–273 (1981).
  14. A. F. Gmitro, J. E. Greivenkamp, W. Swindell, H. H. Barrett, M. Y. Chiu, and S. K. Gordon, "Optical computers for reconstructing objects from their x-ray projections," Opt. Eng. 19, 260 (1981).

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