Now showing items 30-49 of 82

    • Dynamic, cooperative multi-robot pa trolling with a team of UAVs 

      Pippin, Charles, E.; Christensen, Henrik I.; Weiss, Lora G. (Georgia Institute of TechnologySociety of Photo-Optical Instrumentation Engineers (SPIE), 2013)
      The multi-robot patrolling task has practical relevance in surveillance, search and rescue, and security applications. In this task, a team of robots must repeatedly visit areas in the environment, minimizing the time ...
    • Effects of sensory precision on mobile robot localization and mapping 

      Rogers, John G.; Trevor, Alexander J. B.; Nieto-Granda, Carlos; Cunningham, Alexander; Paluri, Manohar; Michael, Nathan; Dellaert, Frank; Christensen, Henrik I.; Kumar, Vijay (Georgia Institute of Technology, 2010-12)
      This paper will explore the relationship between sensory accuracy and Simultaneous Localization and Mapping (SLAM) performance. As inexpensive robots are developed with commodity components, the relationship between ...
    • European Robot Symposium - 2006 

      Christensen, Henrik I.; Georgia Institute of Technology. College of Computing; Georgia Institute of Technology. Center for Robotics and Intelligent Machines (Georgia Institute of TechnologySpringer Verlag, 2006-03)
    • Evaluation of Passing Distance for Social Robots 

      Pacchierotti, Elena; Christensen, Henrik I.; Jensfelt, Patric (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2006-09)
      Casual encounters with mobile robots for nonexperts can be a challenge due to lack of an interaction model. The present work is based on the rules from proxemics which are used to design a passing strategy. In narrow ...
    • Evolutionary Development of Hierarchical Learning Structures 

      Elfwing, Stefan; Uchibe, Eiji; Doya, Kenji; Christensen, Henrik I. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2007-04)
      Hierarchical reinforcement learning (RL) algorithms can learn a policy faster than standard RL algorithms. However, the applicability of hierarchical RL algorithms is limited by the fact that the task decomposition has ...
    • Exploiting Distinguishable Image Features in Robotic Mapping and Localization 

      Jensfelt, Patric; Folkesson, John; Kragic, Danica; Christensen, Henrik I. (Georgia Institute of TechnologySpringer Verlag, 2006-03)
      Simultaneous localization and mapping (SLAM) is an important research area in robotics. Lately, systems that use a single bearing-only sensors have received significant attention and the use of visual sensors have been ...
    • Feature-based mapping with grounded landmark and place labels 

      Trevor, Alexander J. B.; Rogers, John G.; Nieto-Granda, Carlos; Christensen, Henrik I. (Georgia Institute of Technology, 2011-06)
      Service robots can benefit from maps that support their tasks and facilitate communication with humans. For efficient interaction, it is practical to be able to reference structures and objects in the environment, e.g. ...
    • From sensors to human spatial concepts: An annotated data set 

      Zivkovic, Zoran; Booij, Olaf; Kröse, Ben; Topp, Elin A.; Christensen, Henrik I. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2008-03)
      An annotated data set is presented meant to help researchers in developing, evaluating, and comparing various approaches in robotics for building space representations appropriate for communicating with humans. The data ...
    • Graphical SLAM for Outdoor Applications 

      Folkesson, John; Christensen, Henrik I. (Georgia Institute of TechnologyJohn Wiley & Sons, 2007-02)
      Application of SLAM outdoors is challenged by complexity, handling of non-linearities and flexible integration of a diverse set of features. A graphical approach to SLAM is introduced that enables flexible data-association. ...
    • Housewives or technophiles?: understanding domestic robot owners 

      Sung, Ja-Young; Grinter, Rebecca E.; Christensen, Henrik; Guo, Lan (Georgia Institute of TechnologyAssociation for Computing Machinery, 2008-03)
      Despite the growing body of Human-Robot Interaction (HRI) research focused on domestic robots, surprisingly little is known about the demographic profile of robot owners and their influence on usage patterns. In this paper, ...
    • Incentive based cooperation in multi-agent auctions 

      Pippin, Charles, E.; Christensen, Henrik I. (Georgia Institute of TechnologyAssociation for the Advancement of Artificial Intelligence, 2012-03)
      Market or auction based algorithms offer effective methods for de-centralized task assignment in multi-agent teams. Typically there is an implicit assumption that agents are willing to cooperate and can be trusted to perform ...
    • Information-based Reduced Landmark SLAM 

      Choudhary, Siddharth; Indelman, Vadim; Christensen, Henrik I.; Dellaert, Frank (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2015-05)
      In this paper, we present an information-based approach to select a reduced number of landmarks and poses for a robot to localize itself and simultaneously build an accurate map. We develop an information theoretic ...
    • International Symposium on Intelligent Autonomous Systems - IAS-11 

      Christensen, Henrik I.; Groen, F.; Petreu, E.; Georgia Institute of Technology. College of Computing; Georgia Institute of Technology. Center for Robotics and Intelligent Machines (Georgia Institute of TechnologyIOS Press, 2010)
    • Learning task performance in market-based task allocation 

      Pippin, Charles, E.; Christensen, Henrik I. (Georgia Institute of TechnologySpringer-Verlag, 2012-06)
      Auction based algorithms offer effective methods for de-centralized task assignment in multi-agent teams. Typically there is an implicit assumption that agents can be trusted to effectively perform assigned tasks. However, ...
    • Linguistic Composition of Semantic Maps and Hybrid Controllers. Experimental Robotics 

      Dantam, Neil; Nieto-Granda, Carlos; Christensen, Henrik I.; Stilman, Mike (Georgia Institute of TechnologySpringer Verlag, 2012-06)
      This work combines semantic maps with hybrid control models, generating a direct link between action and environment models to produce a control policy for mobile manipulation in unstructured environments. First, we generate ...
    • Long-Term Study of a Portable Field Robot in Urban Terrain 

      Lundberg, Carl; Christensen, Henrik I.; Reinhold, Roger (Georgia Institute of TechnologyJohn Wiley & Sons, 2007-09)
      The armed forces have a considerable amount of experience in using robots for bomb removal and mine clearing. Emerging technology also enables the targeting of other applications. To evaluate if real deployment of new ...
    • Long-term study of portable field robots in urban terrain 

      Lundberg, Carl; Christensen, Henrik; Reinhold, Roger (Georgia Institute of TechnologyAssociation for Computing Machinery, 2006-08)
    • The M-Space Feature Representation for SLAM 

      Folkesson, John; Jensfelt, Patric; Christensen, Henrik I. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2007-10)
      In this paper, a new feature representation for simultaneous localization and mapping (SLAM) is discussed. The representation addresses feature symmetries and constraints explicitly to make the basic model numerically ...
    • Measurement Errors in Visual Servoing 

      Kryki, V.; Kragic, Danica; Christensen, Henrik I. (Georgia Institute of TechnologyElsevier, 2006-10)
      This paper addresses the issue of measurement errors in visual servoing. The error characteristics of the vision based state estimation and the associated uncertainty of the control are investigated. The major contribution ...
    • Medical and health-care robotics 

      Okamura, Allison M.; Mataric, Maja J.; Christensen, Henrik I. (Georgia Institute of TechnologyInstitute of Electrical and Electronics Engineers, 2010-09)
      The aim of this article is to propose some of the most important capabilities and technical achievements of medical and health-care robotics needed to improve human health and well-being. The paper describes application ...