DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Cho, Seungryong | - |
dc.contributor.advisor | 조승룡 | - |
dc.contributor.author | Lee, Donghyeon | - |
dc.date.accessioned | 2019-09-04T02:39:34Z | - |
dc.date.available | 2019-09-04T02:39:34Z | - |
dc.date.issued | 2018 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=828688&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/266680 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 원자력및양자공학과, 2018.8,[iii, 26 p. :] | - |
dc.description.abstract | Dual-energy X-ray inspection systems are widely used today for it provides X-ray attenuation contrast of the imaged object and also its material information. Material decomposition capability allows a higher detection sensitivity of potential targets including purposely loaded impurities in agricultural product inspections and threats in security scans for example. Dual-energy X-ray transmission data can be transformed into two basis material thickness data, and its transformation accuracy heavily relies on a calibration of material decomposition process. The calibration process in general can be laborious and time consuming. Moreover, a conventional calibration method is often challenged by the nonuniform spectral characteristics of the X-ray beam in the entire field-of-view (FOV). In this work, we developed an efficient material decomposition calibration process for a linear accelerator (LINAC) based high-energy X-ray cargo inspection system | - |
dc.description.abstract | furthermore, we proposed a multi-spot calibration method to improve the decomposition performance throughout the entire FOV. In addition, we proposed a clustering algorithm, which greatly improve the decomposition performance. Experimental validation of the proposed method has been demonstrated by use of a cargo inspection system that supports 6 MV and 9 MV dual-energy imaging, and quantitative comparison study was done between the conventional method and the proposed method. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | 화물검색기▼a이중에너지 X-선▼a물질분별▼a다중 스팟 교정방법▼a군집화 알고리즘 | - |
dc.subject | Cargo inspection system▼adual-energy x-ray▼amaterial decomposition▼amulti-spot calibration method▼aclustering algorithm | - |
dc.title | Efficient material decomposition method for dual-energy X-ray cargo inspection system | - |
dc.title.alternative | 이중에너지 X-선 화물 검색기에서의 효과적인 물질분별 방법 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :원자력및양자공학과, | - |
dc.contributor.alternativeauthor | 이동현 | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.