TY - GEN
T1 - An iterative approach to sinogram restoration
AU - Prince, Jerry L.
PY - 1990/12/1
Y1 - 1990/12/1
N2 - The author presents a projection-space method for reconstruction from limited-angle, sparse-angle, and noisy projections. A variational problem, formulated in projection-space; incorporates consistency of the projections using constraints, convex support as a penalty on sinogram values, and sinogram smoothness through spatially varying horizontal and vertical smoothing coefficients. Specification of the vertical smoothing coefficient requires the convex support and an a priori expectation of the object's profile within its convex support. The horizontal smoothing coefficient is chosen heuristically to help account for the absence of observed projections. Simulation results are presented.
AB - The author presents a projection-space method for reconstruction from limited-angle, sparse-angle, and noisy projections. A variational problem, formulated in projection-space; incorporates consistency of the projections using constraints, convex support as a penalty on sinogram values, and sinogram smoothness through spatially varying horizontal and vertical smoothing coefficients. Specification of the vertical smoothing coefficient requires the convex support and an a priori expectation of the object's profile within its convex support. The horizontal smoothing coefficient is chosen heuristically to help account for the absence of observed projections. Simulation results are presented.
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M3 - Conference contribution
AN - SCOPUS:0025547502
SN - 0879425598
T3 - Proceedings of the Annual Conference on Engineering in Medicine and Biology
SP - 366
EP - 367
BT - Biomedical Engineering Perspectives
PB - Publ by IEEE
T2 - Proceedings of the 12th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Y2 - 1 November 1990 through 4 November 1990
ER -