Browsing by Author "Dellen, Babette"
Now showing items 1-20 of 23
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3D modelling of leaves from color and ToF data for robotized plant measuring
(2011)
Conference report
Restricted access - publisher's policySupervision of long-lasting extensive botanic experiments is a promising robotic application that some recent technological advances have made feasible. Plant modelling for this application has strong demands, particularly ... -
3D object reconstruction from Swissranger sensor data using a spring-mass model
(INSTICC Press. Institute for Systems and Technologies of Information, Control and Communication, 2009)
Part of book or chapter of book
Restricted access - publisher's policyWe register close-range depth images of objects using a Swissranger sensor and apply a spring-mass model for 3D object reconstruction. The Swissranger sensor delivers depth images in real time which have, compared with ... -
3d semantic representation of actions from effcient stereo-image-sequence segmentation on GPUs
(2010)
Conference report
Open AccessA novel real-time framework for model-free stereo-video segmentation and stereo-segment tracking is presented, combining real-time optical flow and stereo with image segmentation running separately on two GPUs. The ... -
A local algorithm for the computation of image velocity via constructive interference of global Fourier components
(2011)
Article
Open AccessA novel Fourier-based technique for local motion detection from image sequences is proposed. In this method, the instantaneous velocities of local image points are inferred directly from the global 3D Fourier components ... -
A novel real-time edge-preserving smoothing filter
(2013)
Conference report
Open AccessThe segmentation of textured and noisy areas in images is a very challenging task due to the large variety of objects and materials in natural environments, which cannot be solved by a single similarity measure. In this ... -
Categorizing object-actions relations from semantic scene graphs
(2010)
Conference report
Restricted access - publisher's policyIn 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
(Springer, 2011)
Conference report
Restricted access - publisher's policySegmentation 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 ... -
Contextual interactions in a generalized energy model of complex cells
(2009)
Article
Open AccessWe 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
(2011)
Conference report
Restricted access - publisher's policyWe 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
(2009)
Conference report
Open AccessWe 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
(IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
Conference report
Open AccessExecution 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 ... -
Joint segmentation and tracking of object surfaces in depth movies along human/robot manipulations
(2013)
Conference report
Open AccessA 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
(2011-10-28)
Article
Open AccessRecognizing 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
(2013)
Article
Open AccessHumans 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 ... -
Motion processing with wide-field neurons in the retino-tecto-rotundal pathway
(2010-02)
Article
Open AccessThe 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
(2010)
Conference report
Open AccessEfficient 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
(2012)
Article
Open AccessIn 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 ... -
Robotic leaf probing via segmentation of range data into surface patches
(2012)
Conference report
Open AccessWe 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
(2013)
Article
Open AccessSupervision 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 ... -
Segmenting color images into surface patches by exploiting sparse depth data
(2011)
Conference report
Open AccessWe 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) ...
