Ara es mostren els items 7-26 de 28

    • Indoor and outdoor depth imaging of leaves with time-of-flight and stereo vision sensors: analysis and comparison 

      Kazmi, Wajahat; Foix Salmerón, Sergi; Alenyà Ribas, Guillem; Andersen, Hans Jørgen (2014-02-01)
      Article
      Accés obert
      In this article we analyze the response of Time-of-Flight (ToF) cameras (active sensors) for close range imaging under three different illumination conditions and compare the results with stereo vision (passive) sensors. ...
    • Information-gain view planning for free-form object reconstruction with a 3D ToF camera 

      Foix Salmerón, Sergi; Kriegel, Simon; Fuchs, Stefan; Alenyà Ribas, Guillem; Torras, Carme (Springer, 2012)
      Text en actes de congrés
      Accés obert
      Active view planning for gathering data from an unexplored 3D complex scenario is a hard and still open problem in the computer vision community. In this paper, we present a general task-oriented approach based on an ...
    • Knowledge representation for explainability in collaborative robotics and adaptation 

      Olivares Alarcos, Alberto; Foix Salmerón, Sergi; Alenyà Ribas, Guillem (CEUR-WS.org, 2021)
      Text en actes de congrés
      Accés obert
      Autonomous robots are going to be used in a large diversity of contexts, interacting and/or collaborating with humans, who will add uncertainty to the collaborations and cause re-planning and adaptations to the execution ...
    • Lock-in time-of-flight (ToF) cameras: a survey 

      Foix Salmerón, Sergi; Alenyà Ribas, Guillem; Torras, Carme (2011)
      Article
      Accés obert
      This paper reviews the state-of-the art in the field of lock-in ToF cameras, their advantages, their limitations, the existing calibration methods, and the way they are being used, sometimes in combination with other ...
    • Mobile manipulation hackathon: moving into real world applications 

      Roa Garzón, Máximo Alejandro; Rosell Gratacòs, Jan; Foix Salmerón, Sergi; Pagès, Jordi; Dogar, Mehmet R.; Vivas, Carlos; Morales Escrig, Antonio; Correll, Nikolaus; Gorner, Michael; Memmesheier, Raphael; Ferro, Francesco (2021)
      Article
      Accés obert
      The Mobile Manipulation Hackathon was held in late 2018 during the IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) to showcase the latest applications of wheeled robotic manipulators. The challenge ...
    • Object modeling using a ToF camera under an uncertainty reduction approach 

      Foix Salmerón, Sergi; Alenyà Ribas, Guillem; Andrade-Cetto, Juan; Torras, Carme (2010)
      Text en actes de congrés
      Accés obert
      Time-of-Flight (ToF) cameras deliver 3D images at 25 fps, offering great potential for developing fast object modeling algorithms. Surprisingly, this potential has not been extensively exploited up to now. A reason for ...
    • OCRA – An ontology for collaborative robotics and adaptation 

      Olivares Alarcos, Alberto; Foix Salmerón, Sergi; Borgo, Stefano; Alenyà Ribas, Guillem (2022)
      Article
      Accés obert
      Industrial collaborative robots will be used in unstructured scenarios and a large variety of tasks in the near future. These robots shall collaborate with humans, who will add uncertainty and safety constraints to the ...
    • On inferring intentions in shared tasks for industrial collaborative robots 

      Olivares Alarcos, Alberto; Foix Salmerón, Sergi; Alenyà Ribas, Guillem (2019)
      Article
      Accés obert
      Inferring human operators' actions in shared collaborative tasks, plays a crucial role in enhancing the cognitive capabilities of industrial robots. In all these incipient collaborative robotic applications, humans and ...
    • Plant leaf imaging using time of flight camera under sunlight, shadow and room conditions 

      Kazmi, Wajahat; Foix Salmerón, Sergi; Alenyà Ribas, Guillem (2012)
      Text en actes de congrés
      Accés obert
      In this article, we analyze the effects of ambient light on Time of Flight (ToF) depth imaging for a plant’s leaf in sunlight, shadow and room conditions. ToF imaging is sensitive to ambient light and we try to find the ...
    • Reward-weighted GMM and its application to action-selection in robotized shoe dressing 

      Colomé Figueras, Adrià; Foix Salmerón, Sergi; Alenyà Ribas, Guillem; Torras, Carme (Springer, 2017)
      Text en actes de congrés
      Accés obert
      In the context of assistive robotics, robots need to make multiple decisions. We explore the problem where a robot has multiple choices to perform a task and must select the action that maximizes success probability among ...
    • Robot explanatory narratives of collaborative and adaptive experiences 

      Olivares Alarcos, Alberto; Andriella, Antonio; Foix Salmerón, Sergi; Alenyà Ribas, Guillem (Institute of Electrical and Electronics Engineers (IEEE), 2023)
      Text en actes de congrés
      Accés obert
      In the future, robots are expected to autonomously interact and/or collaborate with humans, who will increase the uncertainty during the execution of tasks, provoking online adaptations of robots' plans. Hence, trustworthy ...
    • 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 ...
    • Robots and IoT devices for assistive automation 

      Bedin, Kevin; Foix Salmerón, Sergi; Alenyà Ribas, Guillem (2019)
      Report de recerca
      Accés obert
      In recent years, we live every day in an ever more connected world. This phenomenon has developed the technologies of the Internet of Things (IoT). At the same time, advances in robotics now make it possible to have ...
    • 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) ...
    • Task-driven active sensing framework applied to leaf probing 

      Foix Salmerón, Sergi; Alenyà Ribas, Guillem; Torras, Carme (2018-04-01)
      Article
      Accés obert
      This article presents a new method for actively exploring a 3D workspace with the aim of localizing relevant regions for a given task. Our method encodes the exploration route in a multi-layer occupancy grid map. This map, ...
    • Task-oriented viewpoint planning for free-form objects 

      Foix Salmerón, Sergi (Universitat Politècnica de Catalunya, 2016-07-28)
      Tesi
      Accés obert
      This thesis deals with active sensing and its use in real exploration tasks under both scene ambiguities and measurement uncertainties. While object modeling is the implicit objective of most of active sensing algorithms, ...
    • Teaching a robot where doors and drawers are and how to handle them 

      Cupec, Robert; Vidovic, Ivan; Šimundic, Valentin; Pejic, P.; Foix Salmerón, Sergi; Alenyà Ribas, Guillem (2023)
      Text en actes de congrés
      Accés obert
      We address the problem of teaching a service robot to detect doors and drawers in indoor environments. We propose a robust and accurate method in which a human demonstrates to the robot how to open doors and drawers that ...
    • ToF cameras for active vision in robotics 

      Alenyà Ribas, Guillem; Foix Salmerón, Sergi; Torras, Carme (2014)
      Article
      Accés obert
      ToF cameras are now a mature technology that is widely being adopted to provide sensory input to robotic applications. Depending on the nature of the objects to be perceived and the viewing distance, we distinguish two ...
    • ToF cameras for eye-in-hand robotics 

      Alenyà Ribas, Guillem; Foix Salmerón, Sergi; Torras, Carme (2015)
      Capítol de llibre
      Accés obert
      A Time-of-Flight (ToF) camera is a relatively new type of sensor that delivers 3-dimensional images at high frame rate, simultaneously providing intensity data and range information for every pixel. It has been used in a ...