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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 4 — Feb. 13, 2012
  • pp: 4260–4271

Progressive compressive imaging from Radon projections

Sergei Evladov, Ofer Levi, and Adrian Stern  »View Author Affiliations

Optics Express, Vol. 20, Issue 4, pp. 4260-4271 (2012)

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In this work we propose a unique sampling scheme of Radon Projections and a non-linear reconstruction algorithm based on compressive sensing (CS) theory to implement a progressive compressive sampling imaging system. The progressive sampling scheme offers online control of the tradeoff between the compression and the quality of reconstruction. It avoids the need of a priori knowledge of the object sparsity that is usually required for CS design. In addition, the progressive data acquisition enables straightforward application of ordered-subsets algorithms which overcome computational constraints associated with the reconstruction of very large images. We present, to the best of our knowledge for the first time, a compressive imaging implementation of megapixel size images with a compression ratio of 20:1.

© 2012 OSA

OCIS Codes
(110.0110) Imaging systems : Imaging systems
(110.1758) Imaging systems : Computational imaging

ToC Category:
Imaging Systems

Original Manuscript: December 20, 2011
Manuscript Accepted: January 27, 2012
Published: February 6, 2012

Sergei Evladov, Ofer Levi, and Adrian Stern, "Progressive compressive imaging from Radon projections," Opt. Express 20, 4260-4271 (2012)

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