Multi-scale Regularization Approaches of Non-parametric Deformable Registrations.
Most deformation algorithms use a single-value smoother during optimization. We investigate multi-scale regularizations (smoothers) during the multi-resolution iteration of two non-parametric deformable registrations (demons and diffeomorphic algorithms) and compare them to a conventional single-val...
| Publicado en: | Journal of Digital Imaging Vol. 24; no. 4; pp. 586 - 598 |
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| Autores principales: | , , , , , , |
| Formato: | diagnostic images equations & formulas research tables/charts Journal Article |
| Publicado: |
Springer Nature
Aug2011
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104661570&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104661570 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 08971889 DOQ jtl: Journal of Digital Imaging issn: 08971889 maglogo: N pubinfo: dt: Aug2011 vid: 24 iid: 4 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 104661570 62871094 10.1007/s10278-010-9313-6 NLM20574767 104661570 ppf: 586 ppct: 12 formats: fmt: @attributes: type: P tig: atl: Multi-scale Regularization Approaches of Non-parametric Deformable Registrations. aug: au: Kuo, Hsiang-Chi Chuang, Keh-Shih Mah, Dennis Wu, Andrew Hong, Linda Yaparpalvi, Ravindra Kalnicki, Shalom affil: Department Biomedical Engineering and Environmental Sciences, National Tsing Hua University, No. 101, Section 2, Kuang-Fu Road Hsinchu 30013 Republic Of China sug: subj: Image Processing, Computer Assisted Methods Algorithms Human Tomography, X-Ray Computed Evaluation Research Paired T-Tests P-Value ab: Most deformation algorithms use a single-value smoother during optimization. We investigate multi-scale regularizations (smoothers) during the multi-resolution iteration of two non-parametric deformable registrations (demons and diffeomorphic algorithms) and compare them to a conventional single-value smoother. Our results show that as smoothers increase, their convergence rate decreases; however, smaller smoothers also have a large negative value of the Jacobian determinant suggesting that the one-to-one mapping has been lost; i.e., image morphology is not preserved. A better one-to-one mapping of the multi-scale scheme has also been established by the residual vector field measures. In the demons method, the multi-scale smoother calculates faster than the large single-value smoother (Gaussian kernel width larger than 0.5) and is equivalent to the smallest single-value smoother (Gaussian kernel width equals to 0.5 in this study). For the diffeomorphic algorithm, since our multi-scale smoothers were implemented at the deformation field and the update field, calculation times are longer. For the deformed images in this study, the similarity measured by mean square error, normal correlation, and visual comparisons show that the multi-scale implementation has better results than large single-value smoothers, and better or equivalent for smallest single-value smoother. Between the two deformable registrations, diffeormophic method constructs better coherence space of the deformation field while the deformation is large between images. pubtype: Academic Journal doctype: diagnostic images equations & formulas research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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