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조영 전후의 폐 CT 영상 정합을 위한 특징 기반의 비강체 정합 기법
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 심학준 | - |
dc.date.accessioned | 2014-12-20T17:05:06Z | - |
dc.date.available | 2014-12-20T17:05:06Z | - |
dc.date.issued | 2011 | - |
dc.identifier.issn | 1229-0807 | - |
dc.identifier.uri | https://ir.ymlib.yonsei.ac.kr/handle/22282913/93932 | - |
dc.description.abstract | In this paper, a feature-based registration technique is proposed for pre-contrast and post-contrast lung CT images. It utilizes three dimensional(3-D) features with their descriptors and estimates feature correspondences by nearest neighborhood matching in the feature space. We design a transformation model between the input image pairs using a free form deformation(FFD) which is based on B-splines. Registration is achieved by minimizing an energy function incorporating the smoothness of FFD and the correspondence information through a non-linear gradient conjugate method. To deal with outliers in feature matching, our energy model integrates a robust estimator which discards outliers effectively by iteratively reducing a radius of confidence in the minimization process. Performance evaluation was carried out in terms of accuracy and efficiency using seven pairs of lung CT images of clinical practice. For a quantitative assessment, a radiologist specialized in thorax manually placed landmarks on each CT image pair. In comparative evaluation to a conventional feature-based registration method, our algorithm showed improved performances in both accuracy and efficiency | - |
dc.description.statementOfResponsibility | open | - |
dc.format.extent | 237~244 | - |
dc.relation.isPartOf | Journal of Biomedical Engineering Research (의공학회지) | - |
dc.rights | CC BY-NC-ND 2.0 KR | - |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/2.0/kr/ | - |
dc.title | 조영 전후의 폐 CT 영상 정합을 위한 특징 기반의 비강체 정합 기법 | - |
dc.title.alternative | Feature-based Non-rigid Registration between Pre- and Post-Contrast Lung CT Images | - |
dc.type | Article | - |
dc.contributor.college | Researcher Institutes (부설 연구소) | - |
dc.contributor.department | Yonsei Cardiovascular Research Institute (심혈관연구소) | - |
dc.contributor.googleauthor | 이현준 | - |
dc.contributor.googleauthor | 홍영택 | - |
dc.contributor.googleauthor | 심학준 | - |
dc.contributor.googleauthor | 권동진 | - |
dc.contributor.googleauthor | 윤일동 | - |
dc.contributor.googleauthor | 이상욱 | - |
dc.contributor.googleauthor | 김남국 | - |
dc.contributor.googleauthor | 서준범 | - |
dc.admin.author | false | - |
dc.admin.mapping | false | - |
dc.contributor.localId | A02215 | - |
dc.relation.journalcode | J01263 | - |
dc.subject.keyword | non-rigid registration | - |
dc.subject.keyword | lung CT | - |
dc.subject.keyword | free-form deformation(FFD) | - |
dc.subject.keyword | 3-D feature detection | - |
dc.subject.keyword | scale invariant feature transform(SIFT) | - |
dc.subject.keyword | energy minimization | - |
dc.contributor.alternativeName | Shim, Hack Joon | - |
dc.contributor.affiliatedAuthor | Shim, Hack Joon | - |
dc.rights.accessRights | free | - |
dc.citation.volume | 32 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 237 | - |
dc.citation.endPage | 244 | - |
dc.identifier.bibliographicCitation | Journal of Biomedical Engineering Research (의공학회지), Vol.32(3) : 237-244, 2011 | - |
dc.identifier.rimsid | 28556 | - |
dc.type.rims | ART | - |
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