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Combining rules using local statistics and uncertainty estimates for improved ensemble segmentation

  • Representation, Processing, Analysis, and Understanding of Images
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An Erratum to this article was published on 01 January 2018

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Abstract

Segmentation using an ensemble of classifiers (or committee machine) combines multiple classifiers’ results to increase the performance when compared to single classifiers. In this paper, we propose new concepts for combining rules. They are based (1) on uncertainties of the individual classifiers, (2) on combining the result of existing combining rules, (3) on combining local class probabilities with the existing segmentation probabilities at each individual segmentation, and (4) on using uncertainty-based weights for the weighted majority rule. The results show that the proposed local-statistics-aware combining rules can reduce the effect of noise in the individual segmentation result and consequently improve the performance of the final (combined) segmentation. Also, combining existing combining rules and using the proposed uncertainty- based weights can further improve the performance.

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Change history

  • 15 March 2018

    The following affiliation, denoted ?d,? should be included for the first author A. Al-Taie: dComputer Science Department, College of Science for Women, Baghdad University, Iraq

  • 15 March 2018

    The following affiliation, denoted ?d,? should be included for the first author A. Al-Taie: dComputer Science Department, College of Science for Women, Baghdad University, Iraq

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Correspondence to A. Al-Taie.

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Horst K. Hahn, he studied physics with mathematics, computer science, and physiology as minors at the University of Bayreuth, University Paul Sabatier Toulouse III, and Ruprecht-Karl University Heidelberg. He authored six patents and more than 175 refereed scientific journal and conference publications in the fields of computer-assisted medicine, quantitative medical imaging, computer-aided detection and diagnosis of cancer, neuroimaging, and image-guided therapy. In 2006, he became vice president of the non-profit MeVis Research GmbH and was centrally involved in its transformation into the Fraunhofer Institute for Medical Image Computing MEVIS as of January 2009, where he acts as institute director since Oct. 2012. At the age of 35, he became adjunct professor of medical visualization and four years later professor of medical imaging at Jacobs University Bremen. He is scientific coordinator of several national and European research consortia, and, among other prices and awards, received the Bremer Studienpreis–Special Price Bruker Daltonik for his PhD thesis entitled “Morphological Volumetry–Theory, Concepts, and Application to Quantitative Medical Imaging.” Not least, he organized in July 2011 the prestigious International Conference on Information Processing in Medical Imaging together with Gabor Szekely, ETH Zurich, for the first time in Germany.

Ahmed Al-Taie, he received his B.S. degree in 1997 and M.Sc. degree in 2000 in Computer Science both were from Department of Computer Science, University of Baghdad, Baghdad, Iraq. He joined the Department of Computer Science of College of Science for Women at the University of Baghdad, Iraq, as an assistant teacher in 2005. In fall 2011, he joined the Visualization and Computer Graphics Laboratory (VGCL) group as Ph.D. student in Jacobs University, Bremen, Germany. In 2015, he received his Ph.D. degree. In 2016, he became teacher. His research interests include medical image analysis and processing.

Lars Linsen is a Full Professor (W3) of Computer Science at the Westfälische Wilhelms-Universität Münster, Germany, at the Institute of Computer Science. He is also an Adjunct Professor of Computational Science and Computer Science at the Department of Computer Science and Electrical Engineering of the Jacobs University, Bremen, Germany. He received his academic degrees from the Universität Karlsruhe (TH), Germany, including a diploma (M.Sc.) in Computer Science in 1997 and a Ph.D. in Computer Science in 2001. He spent three years as a post-doctoral researcher and lecturer at the Institute for Data Analysis and Visualization (IDAV) and the Department of Computer Science of the University of California, Davis, U.S.A. He joined the Department of Mathematics and Computer Science of the Ernst-Moritz- Arndt-Universität Greifswald, Germany, as an assistant professor in 2004. In 2006, he joined Jacobs University as an associate professor and became a full professor in 2012. In 2017, he moved to his current affiliation, the Westfälische Wilhelms-Universität Münster, Germany. Lars Linsen’s research interests are mainly in the areas of data visualization or interactive visual data analysis and include certain topics in computer graphics and geometric modeling.

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Al-Taie, A., Hahn, H.K. & Linsen, L. Combining rules using local statistics and uncertainty estimates for improved ensemble segmentation. Pattern Recognit. Image Anal. 27, 444–457 (2017). https://doi.org/10.1134/S105466181703004X

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