High-energy industrial 2D X-ray imaging system with effective nonlocal means denoising for nondestructive testing
- Authors
- Lee, Seungwan; Cho, Heemoon; Lee, Youngjin
- Issue Date
- 1-May-2019
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Nonlocal means denoising algorithm; Nondestructive testing; High-energy industrial X-ray imaging system; Quantitative performance evaluation
- Citation
- NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, v.925, pp.212 - 216
- Journal Title
- NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
- Volume
- 925
- Start Page
- 212
- End Page
- 216
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/1493
- DOI
- 10.1016/j.nima.2019.01.060
- ISSN
- 0168-9002
- Abstract
- High-energy industrial X-ray imaging systems are widely used in the field of nondestructive testing for the detection of defects in mechanical material. To improve the defect detection ratio, it is highly important to reduce the amount of noise in this process. The purpose of this study is to develop a nonlocal means denoising algorithm in order to evaluate noise characteristics in a 450 kVp high-energy industrial X-ray imaging system. The analysis approach is tested on two phantom images, and image performance is evaluated by visual assessment, as well as the normalized noise power spectrum, contrast to noise ratio, and coefficient of variation. Improvement in image performance is attributed to the use of NLM denoising algorithm on high-energy industrial X-ray images, and results demonstrate that the proposed algorithm effectively reduces image noise.
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