Ara es mostren els items 1-20 de 319

  • 3D pose estimation using convolutional neural networks 

    Rubio Romano, Antonio (Universitat Politècnica de Catalunya, 2015-10)
    Projecte Final de Màster Oficial
    Accés obert
    The present Master Thesis describes a new Pose Estimation method based on Convolutional Neural Networks (CNN). This method divides the three-dimensional space in several regions and, given an input image, returns the ...
  • 3D reconstruction and recognition of objects using a kinect camera 

    Luján Rossell, Alba (Universitat Politècnica de Catalunya, 2016-09)
    Treball Final de Grau
    Accés obert
    Realitzat a/amb:  Technische Universität München
    This project is based on the recent advances of 3D depth cameras, one being the Microsoft Kinect sensors. Nowadays, this technology enables to create really accurate 3D figures and scenes simplifying difficult tasks in ...
  • 3D shape from multi-camera views by error projection minimization 

    Haro, Gloria; Pardàs Feliu, Montse (2010)
    Text en actes de congrés
    Accés obert
    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 ...
  • 3D surface reconstruction in telepresence systems 

    Mora Ballestar, Laura (Universitat Politècnica de Catalunya, 2017-06)
    Treball Final de Grau
    Accés obert
    Registering three-dimensional models is possible thanks to the use of multi view captures or the readings provided by depth sensors, which can be applied in Augmented or Virtual Reality systems. In this sense, this project ...
  • 4D Cardiac MRI Segmentation and Surface Reconstruction 

    Pons Moll, Gerard (Universitat Politècnica de Catalunya, 2008-10-10)
    Projecte/Treball Final de Carrera
    Accés obert
  • 4D Cardiac Segmentation and Respiratory Motion Modeling of the Human Heart 

    Crosas Cano, Guillem (Universitat Politècnica de Catalunya, 2009-06)
    Projecte/Treball Final de Carrera
    Accés obert
    Atrial Fibrillation (AF) is a growing problem in modern societies with an enormous impact in both short term quality of life and long term survival. A recently developed promising approach to cure AF uses radiofrequency ...
  • A compact 3D representation for multi-view video 

    Salvador Marcos, Jordi; Casas Pla, Josep Ramon (2011)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This paper presents a methodology for obtaining a 3D reconstruction of a dynamic scene in multi-camera settings. Our target is to derive a compact representation of the 3D scene which is effective and accurate, whatever ...
  • A comparative study between Elliptic Fourier and B-spline descriptors for object contour representation 

    Ferrer Arnau, Luis Jorge; Parisi Baradad, Vicenç; Soria Pérez, José Antonio; Nasreddine, Kamal; Benzinou, Abdesslam (2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In this work, a comparative study between Elliptic Fourier and B-spline descriptors is carried out for comparing their efficiency in characterizing the contour shape of image objects. In both cases, the goal is to obtain ...
  • A comparison of contrast enhancement methods for 2D radiographic images: Applied to patient positioning in proton therapy 

    Nespereira González, Alejandro (Universitat Politècnica de Catalunya, 2015-05-08)
    Projecte/Treball Final de Carrera
    Accés obert
    Different methods for radiographic image contrast enhancement are studied, implemented and compared. The efficiency of the techniques in improving image contrast is then evaluated both on a subjective evaluation from ...
  • A comparison of contrast enhancement methods for 2D radiographic images: Applied to patient positioning in proton therapy. 

    Nespereira González, Alejandro (Universitat Politècnica de Catalunya, 2015-05-08)
    Projecte/Treball Final de Carrera
    Accés obert
    Realitzat a/amb:  Université Catholique de Louvain
    [ANGLES] Different methods for radiographic image contrast enhancement are studied, implemented and compared. The efficiency of the techniques in improving image contrast is then evaluated both on a subjective evaluation ...
  • A digital image processing method for urban scenes brightness assessment 

    López Besora, Judit; Isalgue Buxeda, Antonio; Coch Roura, Helena (Centre de Política del Sòl i Valoracions - Universitat Politècnica de Catalunya, 2016-10)
    Article
    Accés obert
    The appearance of the city is strongly linked to many aspects such as climate, culture and sociological background. In cities with a prevalence of clear skies, one of the determining aspects is the climatic condition, which ...
  • A discrete labelling approach to attributed graph matching using SIFT features 

    Sanromà Güell, Gerard; Alquézar Mancho, René; Serratosa Casanelles, Francesc (2010)
    Text en actes de congrés
    Accés obert
    Local invariant feature extraction methods are widely used for image-features matching. There exist a number of approaches aimed at the refinement of the matches between image-features. It is a common strategy among these ...
  • A new otolith image contour descriptor based on partial reflection 

    Reig Bolano, Ramon; Marti Puig, Pere; Lombarte, A.; Soria Pérez, José Antonio; Parisi Baradad, Vicenç (2010-12)
    Article
    Accés restringit per política de l'editorial
    In this paper we propose a new contour descriptor for reconstructing fish otolith contours that uses half the number of coefficients needed by the classical elliptical Fourier descriptors (EFDs) for the same accuracy. ...
  • A white-matter pathways extraction toolbox in Semantic Dementia 

    Montal Blancafort, Victor (Universitat Politècnica de Catalunya, 2015-05)
    Treball Final de Grau
    Accés restringit per decisió de l'autor
    [ANGLÈS] Neuroimaging techniques allow us to, processing Magnetic Resonance Imaging signals, understand the brain in a way we ever could image. With the tractorgaphy neuroimaging technique, we can extract the white-matter ...
  • Accelerating super-resolution for 4K upscaling 

    Pérez-Pellitero, Eduardo; Salvador, Jordi; Ruiz Hidalgo, Javier; Rosenhahn, Bodo (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This paper presents a fast Super-Resolution (SR) algorithm based on a selective patch processing. Motivated by the observation that some regions of images are smooth and unfocused and can be properly upscaled with fast ...
  • Accurate video object tracking using a region-based particle filter 

    Girbau Xalabarder, Andreu (Universitat Politècnica de Catalunya, 2017-02-06)
    Projecte Final de Màster Oficial
    Accés obert
    Usually, in particle filters applied to video tracking, a simple geometrical shape, typically an ellipse, is used in order to bound the object being tracked. Although it is a good tracker, it tends to a bad object ...
  • Action recognition using the Rf Transform on optical flow images 

    Carmona Leyva, José María; Climent Vilaró, Joan (SCITEPRESS, 2017)
    Text en actes de congrés
    Accés obert
    The objective of this paper is the automatic recognition of human actions in video sequences. The use of spatio-temporal features for action recognition has become very popular in recent literature Instead of extracting ...
  • Adaptive Filter Solution For Processing Lidar Returns: Optical Parameter Estimation 

    Rocadenbosch Burillo, Francisco; Vázquez Grau, Gregorio; Comerón Tejero, Adolfo (OPTICAL SOC AMER, 1998-01-31)
    Article
    Accés obert
    Joint estimation of extinction and backscatter simulated profiles from elastic-backscatter lidar return signals is tackled by means of an extended Kalman filter (EKF). First, we introduced the issue from a theoretical point ...
  • Algoritmos de reconstrucción de escenas 3D paralelizados en GPU para aplicaciones en tiempo real 

    Oriol Bermúdez, Enrique (Universitat Politècnica de Catalunya, 2010-01-21)
    Projecte/Treball Final de Carrera
    Accés obert
    Se presenta una adaptación de algoritmos de reconstrucción 3D en escenarios multi-cámara a un entorno multiprocesador que permita aprovechar la capacidad de cálculo de los nuevos procesadores gráficos (GPUs), con el objetivo ...
  • Allowing content-based functionalities in segmentation-based coding schemes 

    Marcotegui Iturmendi, Beatriz; Marqués Acosta, Fernando; Meyer, F (1997-08)
    Article
    Accés obert
    This paper deals with the use of the segmentation tools and principles presented in [10] and [13] for allowing content-based functionalities. In this framework, means for supervised selection of objects in the scene are ...