01696nas a2200289 4500008004100000020002200041245009900063210006900162260005400231300001400285520070400299100002001003700002001023700001801043700001901061700001901080700001901099700001801118700001901136700002201155700001701177700001901194700002101213700001501234700001601249856014101265 2010 eng d a978-3-642-17276-200aImage enhancement by median filters in algebraic reconstruction methods: an experimental study0 aImage enhancement by median filters in algebraic reconstruction aLas Vegas, NV, USAbSpringer VerlagcNov-Dec 2010 a339 - 3483 a
Algebraic methods for image reconstruction provide good solutions even if only few projections are available. However, they can create noisy images if the number of iterations or the computational time is limited. In this paper, we show how to decrease the effect of noise by using median filters during the iterations. We present an extensive study by applying filters of different sizes and in various times of the reconstruction process. Also, our test images are of different structural complexity. Our study concentrates on the ART and its discrete variant DART reconstruction methods.
1 aHantos, Norbert1 aBalázs, Péter1 aBebis, George1 aBoyle, Richard1 aParvin, Bahram1 aKoracin, Darko1 aChung, Ronald1 aHammound, Riad1 aHussain, Muhammad1 aKar-Han, Tan1 aCrawfis, Roger1 aThalmann, Daniel1 aKao, David1 aAvila, Lisa uhttps://www.inf.u-szeged.hu/en/publication/image-enhancement-by-median-filters-in-algebraic-reconstruction-methods-an-experimental-study01563nas a2200289 4500008004100000020002200041022001400063245008600077210006900163260005000232300001600282520059600298100002000894700001800914700001900932700001900951700001900970700002100989700001901010700001801029700002101047700001601068700001701084700002501101700001801126856012901144 2008 eng d a978-3-540-89645-6 a0302-974300aReconstruction of binary images with few disjoint components from two projections0 aReconstruction of binary images with few disjoint components fro aLas Vegas, NV, USAbSpringer VerlagcDec 2008 a1147 - 11563 a
We present a general framework for reconstructing binary imageswith few disjoint components from the horizontal and vertical projections. We develop a backtracking algorithm that works for binary images having components from an arbitrary class. Thus, a priori information about the components of the image to be reconstructed can be incorporated into the reconstruction process. In addition, we can keep control over the number of components which can increase the speed and accuracy of the reconstruction. Experimental results are also presented. © 2008 Springer Berlin Heidelberg.
1 aBalázs, Péter1 aBebis, George1 aBoyle, Richard1 aParvin, Bahram1 aKoracin, Darko1 aRemagnino, Paolo1 aPorikli, Fatih1 aPeters, Jörg1 aKlosowski, James1 aArns, Laura1 aChun, Yu, Ka1 aRhyne, Theresa-Marie1 aMonroe, Laura uhttps://www.inf.u-szeged.hu/en/publication/reconstruction-of-binary-images-with-few-disjoint-components-from-two-projections