Ara es mostren els items 6-21 de 21

    • Categorizing object-actions relations from semantic scene graphs 

      Aksoy, Eren Erdal; Abramov, Alexey; Wörgötter, Florentin; Dellen, Babette (2010)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this work we introduce a novel approach for detecting spatiotemporal object-action relations, leading to both, action recognition and object categorization. Semantic scene graphs are extracted from image sequences and ...
    • Cognitive agents: a procedural perspective relying on the predictability of object-action-omplexes (OACs) 

      Wörgötter, Florentin; Agostini, Alejandro Gabriel; Krüger, Norbert; Shylo, Natalya; Porr, Ben (2009)
      Article
      Accés obert
      Embodied cognition suggests that complex cognitive traits can only arise when agents have a body situated in the world. The aspects of embodiment and situatedness are being discussed here from the perspective of linear ...
    • Depth-supported real-time video segmentation with the Kinect 

      Abramov, Alexey; Pauwels, Karl; Papon, Jeremie; Wörgötter, Florentin; Dellen, Babette (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      We present a real-time technique for the spatiotemporal segmentation of color/depth movies. Images are segmented using a parallel Metropolis algorithm implemented on a GPU utilizing both color and depth information, acquired ...
    • Disparity from stereo-segment silhouettes of weakly-textured images 

      Dellen, Babette; Wörgötter, Florentin (2009)
      Text en actes de congrés
      Accés obert
      We propose a novel robust stereo algorithm for weakly-textured scenes. Unique correspondences existing between the silhouettes of corresponding image segments allow assigning accurate disparities to segment boundary points. ...
    • Execution of a dual-object (pushing) action with semantic event chains 

      Aksoy, Eren Erdal; Dellen, Babette; Tamosiunaite, Minija; Wörgötter, Florentin (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
      Text en actes de congrés
      Accés obert
      Execution of a manipulation after learning from demonstration many times requires intricate planning and control systems or some form of manual guidance for a robot. Here we present a framework for manipulation execution ...
    • Integrating task planning and interactive learning for robots to work in human environments 

      Agostini, Alejandro Gabriel; Torras, Carme; Wörgötter, Florentin (AAAI Press. Association for the Advancement of Artificial Intelligence, 2011)
      Text en actes de congrés
      Accés obert
      Human environments are challenging for robots, which need to be trainable by lay people and learn new behaviours rapidly without disrupting much the ongoing activity. A system that integrates AI techniques for planning and ...
    • Learning rules from cause-effects explanations 

      Agostini, Alejandro Gabriel; Celaya Llover, Enric; Torras, Carme; Wörgötter, Florentin (2008)
      Report de recerca
      Accés obert
      In this work we propose a learning system to learn on-line an action policy coded in rules using natural human instructions about cause-effect relations in currently observed situations. The instructions only on currently ...
    • Learning the semantics of object-action relations by observation 

      Aksoy, Eren Erdal; Abramov, Alexey; Dörr, Johannes; Ning, Kejun; Dellen, Babette; Wörgötter, Florentin (2011-10-28)
      Article
      Accés obert
      Recognizing manipulations performed by a human and the transfer and execution of this by a robot is a difficult problem. We address this in the current study by introducing a novel representation of the relations between ...
    • Motion processing with wide-field neurons in the retino-tecto-rotundal pathway 

      Dellen, Babette; Wessel, Ralf; Clark, John W.; Wörgötter, Florentin (2010-02)
      Article
      Accés obert
      The retino-tecto-rotundal pathway is the main visual pathway in nonmammalian vertebrates and has been found to be highly involved in visual processing. Despite the extensive receptive fields of tectal and rotundal wide-field ...
    • Object-action complexes: grounded abstractions of sensory-motor processes 

      Krüger, Norbert; Geib, Cristopher; Piater, Justus; Petrick, Ronald; Steedman, Mark; Wörgötter, Florentin; Ude, Ales; Asfour, Tamim; Kraft, Dirk; Omrcen, Damir; Agostini, Alejandro Gabriel; Dillmann, Rudiger (2011)
      Article
      Accés obert
      This paper formalises Object-Action Complexes (OACs) as a basis for symbolic representations of sensorimotor experience and behaviours. OACs are designed to capture the interaction between objects and associated actions in ...
    • On-line learning of macro planning operators using probabilistic estimations of cause-effects 

      Agostini, Alejandro Gabriel; Wörgötter, Florentin; Celaya Llover, Enric; Torras, Carme (2008)
      Report de recerca
      Accés obert
      In this work we propose an on-line learning method for learning action rules for planning. The system uses a probabilistic approach of a constructive induction method that combines a beam search with an example-based search ...
    • Quick learning of cause-effects relevant for robot action 

      Agostini, Alejandro Gabriel; Wörgötter, Florentin; Torras, Carme (2010)
      Report de recerca
      Accés obert
      In this work we propose a new paradigm for the rapid learning of cause-effect relations relevant for task execution. Learning occurs automatically from action experiences by means of a novel constructive learning approach ...
    • Real-time image segmentation on a GPU 

      Alexey, Abramov; Kulvicius, Tomas; Wörgötter, Florentin; Dellen, Babette (2010)
      Text en actes de congrés
      Accés obert
      Efficient segmentation of color images is important for many applications in computer vision. Non-parametric solutions are required in situations where little or no prior knowledge about the data is available. In this ...
    • Real-time segmentation of stereo videos on a portable system with a mobile GPU 

      Abramov, Alexey; Pauwels, Karl; Papon, Jeremie; Wörgötter, Florentin; Dellen, Babette (2012)
      Article
      Accés obert
      In mobile robotic applications, visual information needs to be processed fast despite resource limitations of the mobile system. Here a novel real-time framework for model- free spatio-temporal segmentation of stereo ...
    • Segment tracking via a spatiotemporal linking process including feedback stabilization in an n-D lattice model 

      Dellen, Babette; Aksoy, Eren Erdal; Wörgötter, Florentin (2009)
      Article
      Accés obert
      Model-free tracking is important for solving tasks such as moving-object tracking and action recognition in cases where no prior object knowledge is available. For this purpose, we extend the concept of spatially synchronous ...
    • Simulating dynamical systems for early vision 

      Dellen, Babette; Wörgötter, Florentin (INSTICC Press. Institute for Systems and Technologies of Information, Control and Communication, 2009)
      Capítol de llibre
      Accés obert
      We propose a novel algorithm for stereo matching using a dynamical systems approach. The stereo correspondence problem is first formulated as an energy minimization problem. From the energy function, we derive a system of ...