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Non-blind deconvolution with an alternating direction method of multipliers (ADMM) after noise reduction in nondestructive testing

Authors
 W. Cheon  ;  B.J. Min  ;  Y.S. Seo  ;  H. Lee 
Citation
 JOURNAL OF INSTRUMENTATION, Vol.14 : P11032, 2019 
Journal Title
 JOURNAL OF INSTRUMENTATION 
Issue Date
2019
Keywords
Inspection with x-rays ; Data processing methods ; Image filtering
Abstract
Abstract: To ensure the quality of material, nondestructive testing is necessary, and radiography testing is the nondestructive technique most commonly used today. For inspection, the quality of a radiographic image is critical, and there are many image artifacts that can reduce inspection accuracies such as noise or blurring. The deterioration in spatial resolution caused by blur in both the X-ray imaging itself and the noise reduction process are particular problems. To tackle them, we implemented a non-blind deconvolution method that employs the alternating direction method of multipliers (ADMM) after noise reduction. Experimental results confirm that the proposed algorithm effectively restores edge sharpness. The 50% modulation transfer function of the restored image of a slit-camera was about 3.54 line-pairs per mm, which is about 2.5 times higher than that of the denoised image. Moreover, the edge preservation index values are about 0.82, 0.54, and 0.75 for the restored, denoised, and acquired images, respectively. Consequentially, the proposed method has the potential to increase inspection efficiency in industrial applications.
Files in This Item:
T201905006.pdf Download
DOI
10.1088/1748-0221/14/11/P11032
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiation Oncology (방사선종양학교실) > 1. Journal Papers
Yonsei Authors
Lee, Ho(이호) ORCID logo https://orcid.org/0000-0001-5773-6893
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/174602
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