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Titolo:
A COMPARISON OF ROTATION-BASED METHODS FOR ITERATIVE RECONSTRUCTION ALGORITHMS
Autore:
DIBELLA EVR; BARCLAY AB; EISNER RL; SCHAFER RW;
Indirizzi:
GEORGIA INST TECHNOL,DEPT ELECT ENGN ATLANTA GA 30332 EMORY UNIV,CRAWFORD LONG HOSP,CARLYLE FRASER HEART CTR ATLANTA GA 30365
Titolo Testata:
IEEE transactions on nuclear science
fascicolo: 6, volume: 43, anno: 1996,
parte:, 2
pagine: 3370 - 3376
SICI:
0018-9499(1996)43:6<3370:ACORMF>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
IMAGE-RECONSTRUCTION; REPROJECTION METHODS; TOMOGRAPHY; SPECT; CONVOLUTION; ERRORS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
19
Recensione:
Indirizzi per estratti:
Citazione:
E.V.R. Dibella et al., "A COMPARISON OF ROTATION-BASED METHODS FOR ITERATIVE RECONSTRUCTION ALGORITHMS", IEEE transactions on nuclear science, 43(6), 1996, pp. 3370-3376

Abstract

Rotation-based projectors and backprojectors offer unique trade-offs between accuracy, computational complexity, and smoothing, We analyzedsix different rotation methods for generating projections and iterative reconstructions of tomographic data, Nearest neighbor, upsampled nearest neighbor, bilinear interpolation, and bicubic interpolation wereall used to determine the values at rotated grid points, A decomposition of the rotation transformation matrix into three components was also investigated, Linear and cubic interpolation were used in the three-pass method. For all of the methods, mean normalized square errors were computed, Our results demonstrate the tradeoffs associated with thedifferent methods and suggest that the three-pass method with cubic interpolation offers a computationally efficient approach with accuracybetween that of bilinear and bicubic interpolation.

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Documento generato il 20/11/19 alle ore 02:28:26