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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

  • Editor: Franco Gori
  • Vol. 29, Iss. 1 — Jan. 1, 2012
  • pp: 153–163

Strategy of computed tomography sinogram inpainting based on sinusoid-like curve decomposition and eigenvector-guided interpolation

Yinsheng Li, Yang Chen, Yining Hu, Ahmed Oukili, Limin Luo, Wufan Chen, and Christine Toumoulin  »View Author Affiliations


JOSA A, Vol. 29, Issue 1, pp. 153-163 (2012)
http://dx.doi.org/10.1364/JOSAA.29.000153


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Abstract

Projection incompleteness in x-ray computed tomography (CT) often relates to sparse sampling or detector gaps and leads to degraded reconstructions with severe streak and ring artifacts. To suppress these artifacts, this study develops a new sinogram inpainting strategy based on sinusoid-like curve decomposition and eigenvector-guided interpolation, where each missing sinogram point is considered located within a group of sinusoid-like curves and estimated from eigenvector-guided interpolation to preserve the sinogram texture continuity. The proposed approach is evaluated on real two-dimensional fan-beam CT data, for which the projection incompleteness, due to sparse sampling and symmetric detector gaps, is simulated. A Compute Unified Device Architecture (CUDA)-based parallelization is applied on the operations of sinusoid fittings and interpolations to accelerate the algorithm. A comparative study is then conducted to evaluate the proposed approach with two other inpainting methods and with a compressed sensing iterative reconstruction. Qualitative and quantitative performances demonstrate that the proposed approach can lead to efficient artifact suppression and less structure blurring.

© 2012 Optical Society of America

OCIS Codes
(100.6950) Image processing : Tomographic image processing
(110.3000) Imaging systems : Image quality assessment
(110.7440) Imaging systems : X-ray imaging

ToC Category:
Imaging Systems

History
Original Manuscript: August 30, 2011
Revised Manuscript: October 20, 2011
Manuscript Accepted: October 21, 2011
Published: December 23, 2011

Citation
Yinsheng Li, Yang Chen, Yining Hu, Ahmed Oukili, Limin Luo, Wufan Chen, and Christine Toumoulin, "Strategy of computed tomography sinogram inpainting based on sinusoid-like curve decomposition and eigenvector-guided interpolation," J. Opt. Soc. Am. A 29, 153-163 (2012)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-29-1-153


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