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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 17 — Aug. 15, 2011
  • pp: 16401–16409

Fast terahertz reflection tomography using block-based compressed sensing

Sang-Heum Cho, Sang-Hun Lee, Chan Nam-Gung, Seoung-Jun Oh, Joo-Hiuk Son, Hochong Park, and Chang-Beom Ahn  »View Author Affiliations


Optics Express, Vol. 19, Issue 17, pp. 16401-16409 (2011)
http://dx.doi.org/10.1364/OE.19.016401


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Abstract

In this paper, a new fast terahertz reflection tomography is proposed using block-based compressed sensing. Since measuring the time-domain signal on two-dimensional grid requires excessive time, reducing measurement time is highly demanding in terahertz tomography. The proposed technique directly reduces the number of sampling points in the spatial domain without modulation or transformation of the signal. Compressed sensing in spatial domain suggests a block-based reconstruction, which substantially reduces computational time without degrading the image quality. An overlap-average method is proposed to remove the block artifact in the block-based compressed sensing. Fast terahertz reflection tomography using the block-based compressed sensing is demonstrated with an integrated circuit and parched anchovy as examples.

© 2011 OSA

OCIS Codes
(110.6795) Imaging systems : Terahertz imaging
(110.6955) Imaging systems : Tomographic imaging

ToC Category:
Imaging Systems

History
Original Manuscript: April 25, 2011
Revised Manuscript: June 30, 2011
Manuscript Accepted: July 16, 2011
Published: August 11, 2011

Virtual Issues
Vol. 6, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Sang-Heum Cho, Sang-Hun Lee, Chan Nam-Gung, Seoung-Jun Oh, Joo-Hiuk Son, Hochong Park, and Chang-Beom Ahn, "Fast terahertz reflection tomography using block-based compressed sensing," Opt. Express 19, 16401-16409 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-17-16401


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