The impact of improved non-local means denoising algorithm on photon-counting X-ray images using various Al additive filtrations
DC Field | Value | Language |
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dc.contributor.author | Lee, Seungwan | - |
dc.contributor.author | Lee, Youngjin | - |
dc.date.accessioned | 2022-05-08T02:40:06Z | - |
dc.date.available | 2022-05-08T02:40:06Z | - |
dc.date.created | 2022-01-22 | - |
dc.date.issued | 2022-03 | - |
dc.identifier.issn | 0168-9002 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/84222 | - |
dc.description.abstract | The filters used in X-ray systems affect the image quality and radiation dose. Although using filters has advantages in terms of image quality and dose, image noise increases because the amount of X-rays in the energy range of the entire area is reduced. Thus, a newly improved non-local means (INLM) denoising algorithm was modeled and applied to X-ray images based on the thickness of the aluminum (Al) filter, which is most commonly used in X-ray imaging systems, to prove its potential use. For X-ray image acquisition, a high-performance cadmium telluride material-based detector and a tube containing Al filters (1-, 3-, and 5-mm thickness) were designed. The proposed INLM denoising algorithm was modeled by including the improved weights for the gradient information for each pixel in the conventional NLM-based equation. When the proposed INLM denoising algorithm was applied to the acquired photon-counting X-ray images, results showed superior performance for both noise characteristics and no-reference-based image evaluation. In particular, we confirmed that when the INLM was applied to X-ray images using 5 mm Al thickness, noise characteristics and no-reference-based evaluation results were improved by approximately 1.36 times and 1.06 times, respectively, compared to the conventional NLM. The study proved that choosing the INLM in photon-counting X-ray images using 5 mm-thick Al filtration is vital for the success of image processing applications. © 2021 Elsevier B.V. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | Elsevier | - |
dc.relation.isPartOf | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | - |
dc.title | The impact of improved non-local means denoising algorithm on photon-counting X-ray images using various Al additive filtrations | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.identifier.wosid | 000781813100003 | - |
dc.identifier.doi | 10.1016/j.nima.2021.166244 | - |
dc.identifier.bibliographicCitation | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, v.1027 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.scopusid | 2-s2.0-85122836214 | - |
dc.citation.title | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | - |
dc.citation.volume | 1027 | - |
dc.contributor.affiliatedAuthor | Lee, Youngjin | - |
dc.type.docType | Article | - |
dc.subject.keywordAuthor | Al filtration | - |
dc.subject.keywordAuthor | Denoising algorithm | - |
dc.subject.keywordAuthor | Improved non-local means (INLM) approach | - |
dc.subject.keywordAuthor | Photon-counting X-ray imaging | - |
dc.subject.keywordAuthor | Quantitative evaluation of image quality | - |
dc.relation.journalResearchArea | Instruments & Instrumentation | - |
dc.relation.journalResearchArea | Nuclear Science & Technology | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Instruments & Instrumentation | - |
dc.relation.journalWebOfScienceCategory | Nuclear Science & Technology | - |
dc.relation.journalWebOfScienceCategory | Physics, Nuclear | - |
dc.relation.journalWebOfScienceCategory | Physics, Particles & Fields | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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