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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 23 — Nov. 7, 2011
  • pp: 23460–23468

Improving image quality of x-ray in-line phase contrast imaging using an image restoration method

Xue-jun Guo, Xiao-lin Liu, Chen Ni, Bo Liu, Shi-ming Huang, and Mu Gu  »View Author Affiliations

Optics Express, Vol. 19, Issue 23, pp. 23460-23468 (2011)

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For practical application of x-ray in-line phase contrast imaging, a high-quality image is essential for object perceptibility and quantitative imaging. The existing approach to improve image quality is limited by high cost and physical limitations of the acquisition hardware. A useful image restoration algorithm based on fast wavelet transform is proposed. It takes advantage of degradation model and extends the modulation transform function (MTF) compensation algorithm from Fourier domain to wavelet domain. The modified algorithm is evaluated through comparison with the conventional MTF compensation algorithm. Its deblurring property is also characterized with the evaluation parameters of image quality. The results demonstrate that the modified algorithm is fast and robust, and it can effectively restore both the lost detail and edge information while ringing artifacts are reduced.

© 2011 OSA

OCIS Codes
(100.1830) Image processing : Deconvolution
(100.3020) Image processing : Image reconstruction-restoration
(100.7410) Image processing : Wavelets
(110.7440) Imaging systems : X-ray imaging

ToC Category:
Image Processing

Original Manuscript: May 25, 2011
Revised Manuscript: August 13, 2011
Manuscript Accepted: October 20, 2011
Published: November 2, 2011

Xue-jun Guo, Xiao-lin Liu, Chen Ni, Bo Liu, Shi-ming Huang, and Mu Gu, "Improving image quality of x-ray in-line phase contrast imaging using an image restoration method," Opt. Express 19, 23460-23468 (2011)

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