Browsing by Subject "Computer vision"

Now showing items 1-20 of 414

    • 3D Bounding box detection from monocular images 

      Catà Villà, Marcel (Universitat Politècnica de Catalunya, 2019-05-08)
      Master thesis
      Open Access
      Object detection is particularly important in robotic applications that require interaction with the environment. Although 2D object detection methods obtain accurate results, these are not enough to provide a complete ...

    • 3D Face and object reconstruction for mobile applications 

      Irurueta Carro, Alberto (Universitat Politècnica de Catalunya, 2010-07-10)
      Master thesis
      Open Access
      Covenantee:   Visual Engineering
      This work is part of project “Mobbio” developed at Visual Engineering within the R&D labs. As will be seen throughout the document, the results obtained with the 3D reconstruction technologies that have developed, not only ...

    • 3D hand reconstruction from RGB-D/RGB video frames in real-time 

      Toda Mas, Aleix (Universitat Politècnica de Catalunya, 2019-04-30)
      Master thesis
      Open Access
      Covenantee:   École polytechnique fédérale de Lausanne
      We present a pipeline able to extract 3D real-world measurements from RGB-D images with high accuracy in real-time. A new method bottom-up multi-person for hand-body pose detection evolved from OpenPifPaf has been presented. ...

    • 3D human action recognition in multiple view scenarios 

      Canton Ferrer, Cristian; Casas Pla, Josep Ramon; Pardàs Feliu, Montse; Sargin, M E; Tekalp, A M (Universitat Politècnica de Catalunya (UPC), 2006)
      Conference report
      Open Access
      This paper presents a novel view-independent approach to the recognition of human gestures of several people in low resolution sequences from multiple calibrated cameras. In contraposition with other multi-ocular ...

    • 3D modelling of leaves from color and ToF data for robotized plant measuring 

      Alenyà Ribas, Guillem; Dellen, Babette; Torras, Carme (2011)
      Conference report
      Restricted access - publisher's policy
      Supervision 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 point cloud segmentation using a fully connected conditional random field 

      Lin, Xiao; Casas Pla, Josep Ramon; Pardàs Feliu, Montse (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference lecture
      Restricted access - publisher's policy
      Traditional image segmentation methods working with low level image features are usually difficult to adapt to higher level tasks, such as object recognition and scene understanding. Object segmentation emerges as a new ...

    • 3D reconstruction of underwater structures 

      Beall, Chris; Lawrence, Brian J.; Ila, Viorela Simona; Dellaert, Frank (2010)
      Conference report
      Open Access
      Environmental change is a growing international concern, calling for the regular monitoring, studying and preserving of detailed information about the evolution of underwater ecosystems. For example, fragile coral reefs ...

    • 3D Reconstruction of vegetation from orthophotos 

      Comino Trinidad, Marc (Universitat Politècnica de Catalunya, 2013-06-21)
      Bachelor thesis
      Open Access
      [CATALÀ] Mitjançant tècniques de Visió per Computador som capaços de detectar i classificar la flora present en una ortofoto. A partir d'aquesta informació, i d'un conjunt de models de plantes en 3D que generem, elaborem ...

    • 3D scene reconstruction and understanding from single shot pictures 

      García González, Alfredo (Universitat Politècnica de Catalunya, 2012-09)
      Master thesis
      Open Access
      Augmented reality mixes computer generated graphics with real imaging using computer vision techniques. However, nowadays, augmented reality is still a very young field of research, and its applications usually involve ...

    • 3D shape from multi-camera views by error projection minimization 

      Haro, Gloria; Pardàs Feliu, Montse (2010)
      Conference report
      Open Access
      Traditional shape from silhouette methods compute the 3D shape as the intersection of the back-projected silhouettes in the 3D space, the so called visual hull. However, silhouettes that have been obtained with background ...

    • A 3D System for training in endoscopical repair of subcondylar fractures of the mandible 

      Hueto, Joan A.; Díaz, José; Monclús Lahoya, Eva; Navazo Álvaro, Isabel; Vázquez Alcocer, Pere Pau; Raspall, G. (Springer Verlag, 2008)
      Article
      Open Access
      Poster Session: 12th Annual Conference of Iscas. Conventional treatment of the subcondylar fractures of the mandible is challenging because of the medial and anterior displacement of the condylar fragment and the limited ...

    • A Comprehensive survey on deep future frame video prediction 

      Selva Castelló, Javier (Universitat Politècnica de Catalunya, 2018-01-25)
      Master thesis
      Open Access
      Covenantee:   Universitat de Barcelona
      El present projecte planteja l'estudi comprensiu i extens per a la tasca de predicció de fotogrames donada una seqüència de vídeo. Mitjançant l'anàlisi de l'estat de l'art en generació d'imatges, xarxes convolucionals i ...

    • A full Stokes imaging polarimeter based on a consumer CMOS camera 

      Peña Gutiérrez, Sara; Ballesta Garcia, Maria; Royo Royo, Santiago (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2019)
      Conference lecture
      Restricted access - publisher's policy
      Nowadays, taking advantage of polarization allows enhancing the contrast of a detected object and extending the information of the scene compared to conventional intensity imagery, as the information added by polarimetric ...

    • A hierarchical architecture to multiple target tracking 

      Rowe, Daniel; Huerta Casado, Iván; Perdersoli, Marco; Guinea, Soledad; Gonzàlez, Jordi; Villanueva, Juan J. (s. n., 2007)
      Conference report
      Open Access
      This work presents an architecture based on a modular and hierarchically-organised system to perform Multiple-Target Tracking (MTT). A set of co-operating modules, which work following both bottom-up and top-down paradigms, ...

    • A Learning from demonstration approach for robot trajectories through motion-sensing human demonstrations 

      Poc López, Ángel (Universitat Politècnica de Catalunya, 2020-04-20)
      Master thesis
      Open Access
      The objective of this thesis is to teach a Baxter robot to learn certain arm trajectories. The robot must be capable of generalizing the primitive movement of the trajectory to new unseen poses. The thesis is framed ...

    • A morphological approach for segmentation and tracking of human faces 

      Marqués Acosta, Fernando; Vilaplana Besler, Verónica (Barcelona, 2000)
      Conference lecture
      Open Access
      A new technique for segmenting and tracking human faces in video sequences is presented. The technique relies on morphological tools such as using connected operators to extract the connected component that more likely ...

    • A new graph matching method for point-set correspondence using the EM algorithm and Softassign 

      Sanromà Güell, Gerard; Alquézar Mancho, René; Serratosa Casanelles, Francesc (2012)
      Article
      Restricted access - publisher's policy
      Finding correspondences between two point-sets is a common step in many vision applications (e.g., image matching or shape retrieval). We present a graph matching method to solve the point-set correspondence problem, which ...

    • A novel real-time edge-preserving smoothing filter 

      Reich, Simon; Abramov, Alexey; Papon, Jeremie; Worgotter, Florentin; Dellen, Babette (2013)
      Conference report
      Open Access
      The 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 ...

    • A simple method of multiple camera calibration for the joint top view projection 

      Mozerov, Mikhail; Amato, Ariel; Al, Murad; Gonzàlez, Jordi (Springer, 2007)
      Part of book or chapter of book
      Open Access
      A simple method for multiple camera calibration based on a novel geometric derivation is presented. The main advantage of this method is that it uses only three points in the world coordinate system to achieve the calibration. ...

    • A survey on model based approaches for 2D and 3D visual human pose recovery 

      Perez Sala, Xavier; Escalera, Sergio; Angulo Bahón, Cecilio; Gonzàlez, Jordi (2014-03-03)
      Article
      Open Access
      Human Pose Recovery has been studied in the field of Computer Vision for the last 40 years. Several approaches have been reported, and significant improvements have been obtained in both data representation and model design. ...