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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 15, Iss. 4 — Apr. 1, 1998
  • pp: 791–801

Fusion of images on affine sampling grids

Douglas Granrath and James Lersch  »View Author Affiliations


JOSA A, Vol. 15, Issue 4, pp. 791-801 (1998)
http://dx.doi.org/10.1364/JOSAA.15.000791


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Abstract

We present a method for combining multiple images of a common object assuming two-dimensional (2D) affine transformations between the image sampling grids. Our method is based upon the projection-onto-convex-sets approach of Yeh Stark [J. Opt. Soc. Am. A7, 491 (1990)]. Each image frame constitutes a single projection in our approach. We derive a frame projection algorithm under the 2D affine transform assumption that uses one-dimensional fast Fourier transform operations. We demonstrate that all the parameters required for successful image fusion can be estimated with sufficient accuracy from the image data proper. Four 64×64-pixel images taken by the Galileo Orbiter spacecraft of the asteroid Gaspra were fused to produce a result with twice the sampling rate and significantly improved spatial resolution. The total processing time was 55 s on a single-processor workstation.

© 1998 Optical Society of America

OCIS Codes
(100.3020) Image processing : Image reconstruction-restoration

History
Original Manuscript: May 22, 1997
Revised Manuscript: October 13, 1997
Manuscript Accepted: October 27, 1997
Published: April 1, 1998

Citation
Douglas Granrath and James Lersch, "Fusion of images on affine sampling grids," J. Opt. Soc. Am. A 15, 791-801 (1998)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-15-4-791

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