Now showing items 1-5 of 5

    • Fast Parametric Elastic Image Registration 

      Author: Kybic, Jan; Unser, Michael
      (IEEE, 2003-11)
      We present an algorithm for fast elastic multidimensional intensity-based image registration with a parametric model of the deformation. It is fully automatic in its default mode of operation. In the case of hard real-world ...
    • Generalized Sampling: A Variational Approach. Part I: Theory 

      Author: Kybic, Jan; Blu, Thierry; Unser, Michael
      (IEEE, 2002-08)
      We consider the problem of reconstructing a multidimensional vector function fin: Rm→Rn from a finite set of linear measures. These can be irregularly sampled responses of several linear filters. Traditional approaches ...
    • Generalized Sampling: A Variational Approach. Part II: Applications 

      Author: Kybic, Jan; Blu, Thierry; Unser, Michael
      (IEEE, 2002-08)
      The variational reconstruction theory from a companion paper finds a solution consistent with some linear constraints and minimizing a quadratic plausibility criterion. It is suitable for treating vector and multidimensional ...
    • Spatio-Temporal Nonrigid Registration for Ultrasound Cardiac Motion Estimation 

      Author: Ledesma-Carbayo, María Jesús; Kybic, Jan; Desco, Manuel; Santos, Andrés; Sühling, Michael; Hunziker, Patrick; Unser, Michael
      (IEEE, 2005-09)
      We propose a new spatio-temporal elastic registration algorithm for motion reconstruction from a series of images. The specific application is to estimate displacement fields from two-dimensional ultrasound sequences of ...
    • Unwarping of Unidirectionally Distorted EPI Images 

      Author: Kybic, Jan; Thévenaz, Philippe; Nirkko, Arto; Unser, Michael
      (IEEE, 2000-02)
      Echo-planar imaging (EPI) is a fast nuclear magnetic resonance imaging (MRI) method. Unfortunately, local magnetic field inhomogeneities induced mainly by the subject's presence cause significant geometrical distortion, ...