An investigation of higher-order tomographic filters using Fourier transforms of reconstructed images

Zhou, Jing; Munshi, P.; Maisl, Michael; Reiter, H.

doi:10.1016/0168-583x(94)95401-1

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2015

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“…[16][17][18][19] There are two different approaches; creating filters based on theoretical derivations which are suited for every geometry, 16,17 and creating filters based on the geometry. 18,19 The AF-FBP method belongs to this second group.…”

Section: Introductionmentioning

confidence: 99%

Algebraic filter approach for fast approximation of nonlinear tomographic reconstruction methods

Plantagie

Batenburg

2015

J. Electron. Imaging

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Abstract. In this paper we present a computational approach for fast approximation of nonlinear tomographic reconstruction methods by filtered backprojection methods. Algebraic reconstruction algorithms are the methods of choice in a wide range of tomographic applications, yet they require significant computation time, restricting their usefulness. We build upon recent work on the approximation of linear algebraic reconstruction methods and extend the approach to the approximation of nonlinear reconstruction methods, which are common in practice. We demonstrate that if a blueprint image is available that is sufficiently similar to the scanned object, our approach can compute reconstructions that approximate iterative nonlinear methods, yet have the same speed as filtered backprojection.

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