Exploració per autor "Dellen, Babette"
Ara es mostren els items 7-26 de 32
-
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'editorialIn 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 ... -
Channel coding for joint colour and depth segmentation
Wallenberg, Markus; Felsberg, Michael; Forssen, Per-Erik; Dellen, Babette (Springer, 2011)
Text en actes de congrés
Accés restringit per política de l'editorialSegmentation is an important preprocessing step in many applications. Compared to colour segmentation, fusion of colour and depth greatly improves the segmentation result. Such a fusion is easy to do by stacking ... -
Combining semantic and geometric features for object class segmentation of indoor scenes
Husain, Syed Farzad; Schulz, Hannes; Dellen, Babette; Torras, Carme; Behnke, Sven (Institute of Electrical and Electronics Engineers (IEEE), 2016)
Article
Accés obertScene understanding is a necessary prerequisite for robots acting autonomously in complex environments. Low-cost RGB-D cameras such as Microsoft Kinect enabled new methods for analyzing indoor scenes and are now ubiquitously ... -
Consistent depth video segmentation using adaptive surface models
Husain, Syed Farzad; Dellen, Babette; Torras, Carme (2014)
Article
Accés obertWe propose a new approach for the segmentation of 3-D point clouds into geometric surfaces using adaptive surface models. Starting from an initial configuration, the algorithm converges to a stable segmentation through a ... -
Contextual interactions in a generalized energy model of complex cells
Dellen, Babette; Clark, John W.; Wessel, Ralf (2009)
Article
Accés obertWe propose a generalized energy model of complex cells to describe modulatory contextual influences on the responses of neurons in the primary visual cortex (V1). Many orientationselective cells in V1 respond to contrast ... -
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'editorialWe 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 obertWe 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 obertExecution 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 ... -
Growth signatures of rosette plants from time-lapse video
Dellen, Babette; Scharr, Hanno; Torras, Carme (2015)
Article
Accés obertPlant growth is a dynamic process, and the precise course of events during early plant development is of major interest for plant research. In this work, we investigate the growth of rosette plants by processing time-lapse ... -
Joint segmentation and tracking of object surfaces in depth movies along human/robot manipulations
Dellen, Babette; Husain, Syed Farzad; Torras, Carme (2013)
Text en actes de congrés
Accés obertA novel framework for joint segmentation and tracking in depth videos of object surfaces is presented. Initially, the 3D colored point cloud obtained using the Kinect camera is used to segment the scene into surface patches, ... -
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 obertRecognizing 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 obertHumans 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 obertIn 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 obertThe 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 obertEfficient 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 obertIn 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 obertIn 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 obertDetecting 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 obertWe 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 obertSupervision 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 ...