Now showing items 241-260 of 327

    • Representing Knowledge of Large-Scale Space 

      Kuipers, Benjamin J. (1977-07-01)
      This dissertation presents a model of the knowledge a person has about the spatial structure of a large-scale environment: the "cognitive map". The functions of the cognitive map are to assimilate new information about ...
    • Residual Vibration Reduction in Computer Controlled Machines 

      Singer, Neil C. (1989-02-01)
      Control of machines that exhibit flexibility becomes important when designers attempt to push the state of the art with faster, lighter machines. Three steps are necessary for the control of a flexible planet. First, ...
    • Robot Motion Vision by Fixation 

      Taalebinezhaad, M. Ali (1992-09-01)
      In many motion-vision scenarios, a camera (mounted on a moving vehicle) takes images of an environment to find the "motion'' and shape. We introduce a direct-method called fixation for solving this motion-vision problem ...
    • Robust 2-D Model-Based Object Recognition 

      Cass, Todd A. (1988-05-01)
      Techniques, suitable for parallel implementation, for robust 2D model-based object recognition in the presence of sensor error are studied. Models and scene data are represented as local geometric features and robust ...
    • Robust Agent Control of an Autonomous Robot with Many Sensors and Actuators 

      Ferrell, Cynthia (1993-05-01)
      This thesis presents methods for implementing robust hexpod locomotion on an autonomous robot with many sensors and actuators. The controller is based on the Subsumption Architecture and is fully distributed over ...
    • Robust and Efficient 3D Recognition by Alignment 

      Alter, Tao Daniel (1992-09-01)
      Alignment is a prevalent approach for recognizing 3D objects in 2D images. A major problem with current implementations is how to robustly handle errors that propagate from uncertainties in the locations of image ...
    • Robust Photo-topography by Fusing Shape-from-Shading and Stereo 

      Thompson, Clay Matthew (1993-02-01)
      Methods for fusing two computer vision methods are discussed and several example algorithms are presented to illustrate the variational method of fusing algorithms. The example algorithms seek to determine planet ...
    • Robust, High-Speed Network Design for Large-Scale Multiprocessing 

      DeHon, Andre (1993-09-01)
      As multiprocessor system size scales upward, two important aspects of multiprocessor systems will generally get worse rather than better: (1) interprocessor communication latency will increase and (2) the probability ...
    • The Role of Chemical Mechanisms in Neural Computation and Learning 

      Hiller, Martha J. (1995-05-23)
      Most computational models of neurons assume that their electrical characteristics are of paramount importance. However, all long-term changes in synaptic efficacy, as well as many short-term effects, are mediated by ...
    • The Role of Fixation and Visual Attention in Object Recognition 

      Ratan, Aparna Lakshmi (1995-07-21)
      This research project is a study of the role of fixation and visual attention in object recognition. In this project, we build an active vision system which can recognize a target object in a cluttered scene efficiently ...
    • The Role of Knowledge in Visual Shape Representation 

      Saund, Eric (1988-10-01)
      This report shows how knowledge about the visual world can be built into a shape representation in the form of a descriptive vocabulary making explicit the important geometrical relationships comprising objects' shapes. ...
    • Roles of Knowledge in Motor Learning 

      Atkeson, Christopher Granger (1987-02-01)
      The goal of this thesis is to apply the computational approach to motor learning, i.e., describe the constraints that enable performance improvement with experience and also the constraints that must be satisfied by ...
    • Safe Distributed Coordination of Heterogeneous Robots through Dynamic Simple Temporal Networks 

      Wehowsky, Andreas F. (2003-05-30)
      Research on autonomous intelligent systems has focused on how robots can robustly carry out missions in uncertain and harsh environments with very little or no human intervention. Robotic execution languages such as RAPs, ...
    • Segmentation and Alignment of Speech and Sketching in a Design Environment 

      Adler, Aaron D. (2003-02-01)
      Sketches are commonly used in the early stages of design. Our previous system allows users to sketch mechanical systems that the computer interprets. However, some parts of the mechanical system might be too hard or too ...
    • Segmentation of Brain Tissue from Magnetic Resonance Images 

      Kapur, Tina (1995-01-01)
      Segmentation of medical imagery is a challenging problem due to the complexity of the images, as well as to the absence of models of the anatomy that fully capture the possible deformations in each structure. Brain ...
    • Series Elastic Actuators 

      Williamson, Matthew M. (1995-09-07)
      This thesis presents the design, construction, control and evaluation of a novel force controlled actuator. Traditional force controlled actuators are designed from the premise that "Stiffer is better''. This approach ...
    • Shape from Contour 

      Witkin, Andrew P. (1980-11-01)
      The problem of using image contours to infer the shapes and orientations of surfaces is treated as a problem of statistical estimation. The basis for solving this problem lies in an understanding of the geometry of ...
    • Shape from Shading: A Method for Obtaining the Shape of a Smooth Opaque Object from One View 

      Horn, Berthold K.P. (1970-11-01)
      A method will be described for finding the shape of a smooth apaque object form a monocular image, given a knowledge of the surface photometry, the position of the lightsource and certain auxiliary information to ...
    • Shaping Inputs to Reduce Vibration in Flexible Space Structures 

      Chang, Kenneth W. (1992-06-01)
      Future NASA plans to launch large space strucutres solicit the need for effective vibration control schemes which can solve the unique problems associated with unwanted residual vibration in flexible spacecraft. In ...
    • A Simple Model of Circuit Design 

      Roylance, Gerald (1980-05-01)
      A simple analog circuit designer has been implemented as a rule based system. The system can design voltage followers. Miller integrators, and bootstrap ramp generators from functional descriptions of what these ...