Exploració per autor "Dellen, Babette"

Ara es mostren els items 17-32 de 32

    • 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 ...

    • Local stimulus disambiguation with global motion filters predicts adaptive surround modulation 

      Dellen, Babette; Torras, Carme (2013)
      Article
      Accés obert
      Humans have no problem segmenting different motion stimuli despite the ambiguity of local motion signals. Adaptive surround modulation, i.e., the apparent switching between integrative and antagonistic modes, is assumed ...

    • Modeling leaf growth of rosette plants using infrared stereo image sequences 

      Eren Erdal, Aksoy; Abramov, Alexey; Worgotter, Florentin; Scharr, Hanno; Fischbach, Andreas; Dellen, Babette (2015)
      Article
      Accés obert
      In this paper, we present a novel multi-level procedure for finding and tracking leaves of a rosette plant, in our case up to 3 weeks old tobacco plants, during early growth from infrared-image sequences. This allows ...

    • 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 ...

    • 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 ...

    • Realtime tracking and grasping of a moving object from range video 

      Husain, Syed Farzad; Colomé Figueras, Adrià; Dellen, Babette; Alenyà Ribas, Guillem; Torras, Carme (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés obert
      In this paper we present an automated system that is able to track and grasp a moving object within the workspace of a manipulator using range images acquired with a Microsoft Kinect sensor. Realtime tracking is achieved ...

    • Recognizing point clouds using conditional random fields 

      Husain, Syed Farzad; Dellen, Babette; Torras, Carme (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés obert
      Detecting objects in cluttered scenes is a necessary step for many robotic tasks and facilitates the interaction of the robot with its environment. Because of the availability of efficient 3D sensing devices as the Kinect, ...

    • Robotic leaf probing via segmentation of range data into surface patches 

      Alenyà Ribas, Guillem; Dellen, Babette; Foix Salmerón, Sergi; Torras, Carme (2012)
      Text en actes de congrés
      Accés obert
      We present a novel method for the robotized probing of plant leaves using Time-of-Flight (ToF) sensors. Plant images are segmented into surface patches by combining a segmentation of the infrared intensity image, provided ...

    • Robotized plant probing: leaf segmentation utilizing time-of-flight data 

      Alenyà Ribas, Guillem; Dellen, Babette; Foix Salmerón, Sergi; Torras, Carme (2013)
      Article
      Accés obert
      Supervision of long-lasting extensive botanic experiments is a promising robotic application that some recent technological advances have made feasible. Plant modeling for this application has strong demands, particularly ...

    • Robust surface tracking in range image sequences 

      Husain, Syed Farzad; Dellen, Babette; Torras, Carme (2014)
      Article
      Accés obert
      A novel robust method for surface tracking in range-image sequences is presented which combines a clustering method based on surface models with a particle-filter-based 2-D affine-motion estimator. Segmented regions obtained ...

    • Scene understanding using deep learning 

      Husain, Syed Farzad; Dellen, Babette; Torras, Carme (Elsevier, 2017)
      Capítol de llibre
      Accés obert
      Automation based on artificial intelligence becomes necessary when agents such as robots are deployed to perform complex tasks. Detailed representation of a scene makes robots better aware of their surroundings, thereby ...

    • 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 ...

    • Segmenting color images into surface patches by exploiting sparse depth data 

      Dellen, Babette; Alenyà Ribas, Guillem; Foix Salmerón, Sergi; Torras, Carme (2011)
      Text en actes de congrés
      Accés obert
      We present a new method for segmenting color images into their composite surfaces by combining color segmentation with model-based fitting utilizing sparse depth data, acquired using time-of-flight (Swissranger, PMD CamCube) ...

    • 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 ...

    • Volume measurement with a consumer depth camera based on structured infrared light 

      Dellen, Babette; Rojas Jofre, Iván Andrés (2013)
      Comunicació de congrés
      Accés obert
      The measurement of object volumes is of large importance for many sectors in industry, including agriculture, transportation, production, and forestry. In this paper, we investigate the feasibility of using commercial ...