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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 15 — Jul. 28, 2014
  • pp: 17745–17755

Sparse-view computed laminography with a spherical sinusoidal scan for nondestructive testing

Sajid Abbas, Miran Park, Jonghwan Min, Ho Kyung Kim, and Seungryong Cho  »View Author Affiliations

Optics Express, Vol. 22, Issue 15, pp. 17745-17755 (2014)

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X-ray computed laminography is widely used in nondestructive testing of relatively flat objects using an oblique scanning configuration for data acquisition. In this work, a new scanning scheme is proposed in conjunction with the compressive-sensing-based image reconstruction for reducing imaging radiation dose and scanning time. We performed a numerical study comparing image qualities acquired by various scanning configurations that are practically implementable: single-arc, double-arc, oblique, and spherical-sinusoidal trajectories. A compressive-sensing-inspired total-variation (TV) minimization algorithm was used to reconstruct the images from the data acquired at only 40 projection views in those trajectories. It was successfully demonstrated that the proposed scanning scheme outperforms the others in terms of image contrast and spatial resolution, although the oblique scanning scheme showed a comparable resolution property. We believe that the proposed scanning method may provide a solution to fast and low-dose nondestructive testing of radiation-sensitive and highly integrated devices such as multilayer microelectronic circuit boards.

© 2014 Optical Society of America

OCIS Codes
(110.0110) Imaging systems : Imaging systems
(340.7440) X-ray optics : X-ray imaging
(110.1758) Imaging systems : Computational imaging
(110.6955) Imaging systems : Tomographic imaging

ToC Category:
Imaging Systems

Original Manuscript: May 14, 2014
Revised Manuscript: June 20, 2014
Manuscript Accepted: June 20, 2014
Published: July 14, 2014

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

Sajid Abbas, Miran Park, Jonghwan Min, Ho Kyung Kim, and Seungryong Cho, "Sparse-view computed laminography with a spherical sinusoidal scan for nondestructive testing," Opt. Express 22, 17745-17755 (2014)

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