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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 12, Iss. 9 — Sep. 1, 1995
  • pp: 1884–1901

Direct reconstruction methods for hyperspectral imaging with rotational spectrotomography

P. A. Bernhardt  »View Author Affiliations

JOSA A, Vol. 12, Issue 9, pp. 1884-1901 (1995)

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A new technique for hyperspectral imaging called spectrotomography collects all available photons and relies on computer tomography to reconstruct the three-dimensional data cube of an object. A rotational spectrotomographic (RST) imager is designed with a wide-aperture, objective-grating camera that is rotated in steps around its optical axis. The full range of spatial and spectral resolution is achieved by the use of a stepped-focal-length (zoom) lens to illuminate the grating. Two-dimensional projections of the object are analyzed with the use of both direct Fourier methods and filter-backprojection algorithms. The RST imager has applications to detection of optical emissions where large photon throughput is required.

© 1995 Optical Society of America

P. A. Bernhardt, "Direct reconstruction methods for hyperspectral imaging with rotational spectrotomography," J. Opt. Soc. Am. A 12, 1884-1901 (1995)

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