Now showing items 72-91 of 210

    • The Hamilton-Jacobi skeleton 

      Siddiqi, Kaleem; Bouix, Sylvain; Tannenbaum, Allen R.; Zucker, Steven W. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 1999-09)
      The eikonal equation and variants of it are of significant interest for problems in computer vision and image processing. It is the basis for continuous versions of mathematical morphology, stereo, shape-from-shading and ...
    • A Hamilton-Jacobi-Bellman Approach to High Angular Resolution Diffusion Tractography 

      Pichon, Eric; Westin, Carl-Fredrik; Tannenbaum, Allen R. (Georgia Institute of TechnologySpringer Verlag, 2005-10)
      This paper describes a new framework for white matter tractography in high angular resolution diffusion data. A direction-dependent local cost is defined based on the diffusion data for every direction on the unit sphere. ...
    • High resolution sensing and anisotropic segmentation for SAR imagery 

      Georgiou, Tryphon T.; Tannenbaum, Allen R. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2000-12)
      The purpose of the paper is to introduce new methodologies for high resolution image processing and knowledge-based segmentation for SAR imagery. These techniques could also have a major impact on problems in radar and ...
    • Hybrid geodesic region-based curve evolutions for image segmentation 

      Lankton, Shawn; Nain, Delphine; Yezzi, Anthony; Tannenbaum, Allen R. (Georgia Institute of TechnologySociety of Photo-Optical Instrumentation Engineers, 2007-02-18)
      In this paper we present a gradient descent flow based on a novel energy functional that is capable of producing robust and accurate segmentations of medical images. This flow is a hybridization of local geodesic active ...
    • Hyperbolic "Smoothing" of shapes 

      Siddiqi, Kaleem; Tannenbaum, Allen R.; Zucker, Steven W. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 1998-01)
      We have been developing a theory of generic 2-D shape based on a reaction-diffusion model from mathematical physics. The description of a shape is derived from the singularities of a curve evolution process driven by the ...
    • H₂ Suboptimal Estimation and Control for Nonnegative Dynamical Systems 

      Haddad, Wassim M.; Chellaboina, Vijay Sekhar; Gholami, Behnood (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2007-07)
      Linear matrix inequalities provide a powerful design framework for linear control problems. In this paper, we use linear matrix inequalities to develop H₂ (sub)optimal estimators and controllers for nonnegative dynamical ...
    • H∞ optimal controllers for a distributed model of an unstable aircraft 

      Enns, Dale; Özbay, Hitay; Tannenbaum, Allen R. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 1991-12)
      The authors discuss the numerical computation of H∞ optimal controllers for an unstable aircraft model with a time delay. It is shown that the optimal H∞ controller for this infinite-dimensional model can be computed from ...
    • H∞-Optimization Theory for Distributed Systems 

      Tannenbaum, Allen R.; Zames, George; Foias, Ciprian (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 1986-12)
      In this note we write down an explicit formula for the computation of the optimal sensitivity of an arbitrary single input/output, linear time-invariant distributed plant. We moreover discuss the uniqueness of the optimal ...
    • Image interpolation based on optimal mass preserving mappings 

      Zhu, Lei; Tannenbaum, Allen R. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2004-04)
      Time domain image interpolation, or image morphing, refers to a class of techniques for generating a set of smoothly changing intermediate images between two given images. Numerous methods have been proposed for this ...
    • Image Morphing Based on Mutual Information and Optimal Mass Transport 

      Zhu, Lei; Yang, Yan; Haker, Steven; Tannenbaum, Allen R. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2004-10)
      Time domain image interpolation, or image morphing, refers to a class of techniques for generating a series of smoothly changing intermediate images between two given related images. In this note, we present a novel approach ...
    • An Image Morphing Technique Based on Optimal Mass Preserving Mapping 

      Zhu, Lei; Yang, Yan; Haker, Steven; Tannenbaum, Allen R. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2007-06)
      Image morphing, or image interpolation in the time domain, deals with the metamorphosis of one image into another. In this paper, a new class of image morphing algorithms is proposed based on the theory of optimal mass ...
    • Image Segmentation Using Active Contours Driven by the Bhattacharyya Gradient Flow 

      Michailovich, Oleg V.; Rathi, Yogesh; Tannenbaum, Allen R. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2007-11)
      This paper addresses the problem of image segmentation by means of active contours, whose evolution is driven by the gradient flow derived froman energy functional that is based on the Bhattacharyya distance. In particular, ...
    • Improved tracking by decoupling camera and target motion 

      Lankton, Shawn; Tannenbaum, Allen R. (Georgia Institute of TechnologySociety of Photo-Optical Instrumentation Engineers, 2008-01)
      Video tracking is widely used for surveillance, security, and defense purposes. In cases where the camera is not fixed due to pans and tilts, or due to being fixed on a moving platform, tracking can become more difficult. ...
    • Integrated Routing and Storage for Messaging Applications in Mobile Ad Hoc Networks 

      Nain, Delphine; Petigara, Noshirwan; Balakrishnan, Hari (Georgia Institute of TechnologySpringer Verlag, 2004-12)
      This paper is motivated by the observation that traditional ad hoc routing protocols are not an adequate solution for messaging applications (e.g., e-mail) in mobile ad hoc networks. Routing in ad hoc mobile networks is ...
    • An Interactive Virtual Endoscopy Tool 

      Nain, Delphine; Haker, Steven; Kikinis, Ron; Grimson, W. Eric L. (Georgia Institute of Technology, 2001-09)
      In this paper, we present the design and implementation of a 3D Virtual Endoscopy system for facilitating diagnostic and surgical planning phases of endoscopic procedures. Our system allows the user to interactively explore ...
    • Intra-Patient Prone to Supine Colon Registration for Synchronized Virtual Colonoscopy 

      Nain, Delphine; Haker, Steven; Grimson, W. Eric L.; Cosman, Eric R., Jr.; Wells, William W.; Ji, Hoon; Kikinis, Ron; Westin, Carl-Fredrik (Georgia Institute of TechnologySpringer Verlag, 2002-09)
      In this paper, we present an automated method for colon registration. The method uses dynamic programming to align data defined on colon center-line paths, as extracted from the prone and supine scans. This data may include ...
    • Introduction to the Special Issue on Partial Differential Equations and Geometry-Driven Diffusion in Image Processing and Analysis 

      Caselles, Vicent; Morel, Jean-Michel; Sapiro, Guillermo; Tannenbaum, Allen R. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 1998-03)
    • Invariant geometric evolutions of surfaces and volumetric smoothing 

      Olver, Peter; Sapiro, Guillermo; Tannenbaum, Allen R. (Georgia Institute of TechnologySociety for Industrial and Applied Mathematics, 1997-02)
      The study of geometric flows for smoothing, multiscale representation, and analysis of two- and three-dimensional objects has received much attention in the past few years. In this paper, we first survey the geometric ...
    • An ITK Filter for Bayesian Segmentation: itkBayesianClassifierImageFilter 

      Melonakos, John; Krishnan, Karthik; Tannenbaum, Allen R. (Georgia Institute of TechnologyInsight Software Consortium, 2006-01-09)
      An Insight Toolkit (ITK) filter for image segmentation with applications to brain MRI scans is presented in this paper. Previously, we showed how ITK could be used to implement our algorithm. This paper presents our new ...
    • Kernel-based high-dimensional histogram estimation for visual tracking 

      Karasev, Peter; Malcolm, James G.; Tannenbaum, Allen R. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2008-10)
      We propose an approach for non-rigid tracking that represents objects by their set of distribution parameters. Compared to joint histogram representations, a set of parameters such as mixed moments provides a significantly ...