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dc.contributor.authorLin, Chih-Yangen_US
dc.contributor.authorLee, Wen-Jengen_US
dc.contributor.authorChen, Shyh-Jyeen_US
dc.contributor.authorTsai, Ching-Hwaen_US
dc.contributor.authorLee, Jei-Hanen_US
dc.contributor.authorChang, Chia-Hungen_US
dc.contributor.authorChing, Yu-Taien_US
dc.date.accessioned2014-12-08T15:15:19Z-
dc.date.available2014-12-08T15:15:19Z-
dc.date.issued2006-12-01en_US
dc.identifier.issn0897-1889en_US
dc.identifier.urihttp://dx.doi.org/10.1007/s10278-006-0630-8en_US
dc.identifier.urihttp://hdl.handle.net/11536/11488-
dc.description.abstractComputed radiography (CR) has many advantages such as filmless operations, efficiency, and convenience. Furthermore, it is easier to integrate with the picture archiving and communication systems. Another important advantage is that CR images generally have a wider dynamic range than conventional screen film. Unfortunately, grid artifacts and moire pattern artifacts may be present in CR images. These artifacts become a more serious problem when viewing CR images on a computer monitor when a clinic grade monitor is not available. Images produced using a grid with higher frequency or a Potter-Bucky grid (i.e., a moving grid, Bucky for short) can reduce occurrence but cannot guarantee elimination of these artifacts [CR & PACS (2000); Detrick F (2001), pp 7-8]. In this paper, the formation of the artifacts is studied. We show that the grid artifacts occur in a narrow band of frequency in the frequency domain. The frequency can be determined, accurately located, and thus removed from the frequency domain. When comparing the results obtained from the proposed method against the results obtained using previous computer methods, we show that our method can achieve better image quality.en_US
dc.language.isoen_USen_US
dc.subjectMoireen_US
dc.subjectaliasingen_US
dc.subjectcomputed radiographyen_US
dc.subjectgriden_US
dc.subjectBuckyen_US
dc.titleA study of grid artifacts formation and elimination in computed radiographic imagesen_US
dc.typeArticleen_US
dc.identifier.doi10.1007/s10278-006-0630-8en_US
dc.identifier.journalJOURNAL OF DIGITAL IMAGINGen_US
dc.citation.volume19en_US
dc.citation.issue4en_US
dc.citation.spage351en_US
dc.citation.epage361en_US
dc.contributor.department資訊工程學系zh_TW
dc.contributor.departmentDepartment of Computer Scienceen_US
dc.identifier.wosnumberWOS:000242824200008-
dc.citation.woscount12-
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