IEEE Trans Image Process - Image reconstruction from finite number of projections: method of transferring geometry.

Tópicos

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Resumo

This paper introduces a novel method of image reconstruction from a finite number of projections by processing the image along parallel rays. The geometry from the image plane is transferred to the Cartesian lattice by means of using the original image's line-integrals to calculate the line-sums of the discrete image to be reconstructed. Such a transformation of geometry allows for the 2D discrete paired transform, whose complete set of functions is defined by directions, to be effectively used in the exact reconstruction of the original image. The model of image reconstruction is described, and both examples and experimental results of implementation of the proposed method are provided for reconstruction on the Cartesian lattice of size 2(r) ? 2(r), where r = 2.

Resumo Limpo

paper introduc novel method imag reconstruct finit number project process imag along parallel ray geometri imag plane transfer cartesian lattic mean use origin imag lineintegr calcul linesum discret imag reconstruct transform geometri allow d discret pair transform whose complet set function defin direct effect use exact reconstruct origin imag model imag reconstruct describ exampl experiment result implement propos method provid reconstruct cartesian lattic size r r r

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