Now showing items 199-210 of 210

    • Uncertain Nonlinear Receding Horizon Control Systems Subject to Non-Zero Computation Time 

      Gholami, Behnood; Rabbath, C. A.; Gordon, Brandon W. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2005-12)
      In this paper Receding Horizon Control (RHC) of an uncertain nonlinear system is considered where the computation time is non-negligible. In a well-known method, the solution process of the optimal control problem is started ...
    • An Unsupervised Learning Approach for Facial Expression Recognition using Semi-Definite Programming and Generalized Principal Component Analysis 

      Gholami, Behnood; Haddad, Wassim M.; Tannenbaum, Allen R. (Georgia Institute of TechnologyInternational Society for Optical Engineering, 2010-01-08)
      In this paper, we consider facial expression recognition using an unsupervised learning framework. Specifically, given a data set composed of a number of facial images of the same subject with different facial expressions, ...
    • A variational framework combining level-sets and thresholding 

      Dambreville, Samuel; Niethammer, Marc; Yezzi, Anthony; Tannenbaum, Allen R. (Georgia Institute of TechnologyBritish Machine Vision Association, 2007-09)
      Segmentation involves separating distinct regions in an image. In this note, we present a novel variational approach to perform this task within the level-sets framework. We propose an energy functional that naturally ...
    • Vessel Segmentation Using a Shape Driven Flow 

      Nain, Delphine; Yezzi, Anthony; Turk, Greg (Georgia Institute of TechnologySpringer Verlag, 2004-09)
      We present a segmentation method for vessels using an implicit deformable model with a soft shape prior. Blood vessels are challenging structures to segment due to their branching and thinning geometry as well as the ...
    • Vessel Segmentation with Automatic Centerline Extraction Using Tubular Tree Segmentation 

      Mohan, Vandana; Sundaramoorthi, Ganesh; Stillman, Arthur; Tannenbaum, Allen R. (Georgia Institute of Technology, 2009-09-20)
      The study of the coronary vessel structure is crucial to the diagnosis of atherosclerosis and other cardiovascular diseases, which together account for about 35% of all deaths in the United States per year. Vessel Segmentation ...
    • Vision-Based Fuzzy 2D Motion Control of a Model Helicopter 

      Tadayoni, S. A.; Gholami, Behnood; Demirli, K. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2006-06)
      In this paper the 2D motion of a model helicopter is studied. The position control of a 2D model helicopter falls into complex nonlinear problems domain which makes it rather hard. In this paper a fuzzy controller is ...
    • Vision-Based Range Regulation of a Leader-Follower Formation 

      Vela, Patricio A.; Betser, Amir; Malcolm, James G.; Tannenbaum, Allen R. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2009-03)
      This brief describes a single-vehicle tracking algorithm relying on active contours for target extraction and an extended Kalman filter for relative position estimation. The primary difficulty lies in the estimation and ...
    • Visual search automation for unmanned aerial vehicles 

      Johnson, Eric N.; Proctor, Alison A.; Ha, Jin-cheol; Tannenbaum, Allen R. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2005-01)
      The design, development, and testing of an unmanned aerial vehicle (UAV) with automated capabilities is described: searching a prescribed area, identifying a specific building within that area based on a small sign located ...
    • Weighted Optimization Theory for Nonlinear Systems 

      Foias, Ciprian; Tannenbaum, Allen R. (Georgia Institute of TechnologySociety for Industrial and Applied Mathematics, 1989-07)
      In this paper, the solution of a nonlinear version of the weighted sensitivity H∞-optimization problem is discussed. It is shown that the natural object to be considered in this context is a certain "sensitivity operator," ...
    • Weighted Sensitivity Minimization for Delay Systems 

      Foias, Ciprian; Tannenbaum, Allen R.; Zames, George (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 1986-08)
      In this note we discuss the H ∞ sensitivity minimization problem for linear time-invariant delay systems. While the unweighted case reduces to simple Nevanlinna-Pick interpolation, the weighted case turns out to be much ...
    • Weighted sensitivity minimization for delay systems 

      Foias, Ciprian; Tannenbaum, Allen R.; Zames, George (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 1985-12)
      In this note we discuss the H∞-sensitivity minimization problem for linear time-invariant delay systems. While the unweighted case reduces to simple Nevanlinna-Pick interpolation, the weighted case turns out to be much ...
    • Weighted sensitivity minimization of linear periodic time-varying systems 

      Feintuch, Avraham; Khargonekar, Pramod P.; Tannenbaum, Allen R. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 1985-12)
      The problem of weighted sensitivity minimization of linear periodic time-varying plants is considered. The controllers are also required to be linear periodic with the same period as that of the plant. A formula for the ...