Now showing items 1-20 of 36

  • 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)
    Conference report
    Restricted access - publisher's policy
    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 ...
  • Allowing content-based functionalities in segmentation-based coding schemes 

    Marcotegui Iturmendi, Beatriz; Marqués Acosta, Fernando; Meyer, F (1997-08)
    Article
    Open Access
    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 ...
  • An adaptive pyramid image coding system 

    Torres Urgell, Lluís; Sallent Ribes, Sebastián (Institute of Electrical and Electronics Engineers (IEEE), 1988)
    Conference report
    Open Access
    The Laplacian Pyramid is a new and efficient method for image encoding. The method is of increasing interest as band-pass pyramids and multiresolution images are being used in other image processing applications. The Pyramid ...
  • Análisis de no estacionariedades en la interpolación de imágenes. Aplicación a codificación piramidal y zoom 

    Gasull Llampallas, Antoni; Marqués Acosta, Fernando; Torres Urgell, Lluís (1991)
    Conference report
    Open Access
    In some applications of digital image processing the fact that an image is a non estacionary signal can cause some undesirable effects. That is the case of block effect in transform coding, or destructive effects on contours ...
  • Automated real color calibration and recognition using RGB cameras 

    Benito Altamirano, Ismael (Universitat Politècnica de Catalunya, 2016-09-09)
    Master thesis
    Restricted access - confidentiality agreement
  • Color space adaptation for video coding 

    Arrufat Batalla, Adrià (Universitat Politècnica de Catalunya, 2012-09-18)
    Master thesis (pre-Bologna period)
    Open Access
    [ANGLÈS] Project on the objective and subjective improvements by pre-processing images to be encoded into a video.
  • Detección automática de contornos en imágenes ecocardiográficas 

    Gasull Llampallas, Antoni; Marqués Acosta, Fernando; Sallent Ribes, Sebastián; Torres Urgell, Lluís; Vidal Sans, Josep (Asociación Española de Reconocimiento de Formas y Análisis de Imágenes, 1988)
    Conference report
    Open Access
  • Detección y asociación automática de puntos característicos para diferentes aplicaciones 

    Enebral Gonzalez, Javier (Universitat Politècnica de Catalunya, 2009-07-24)
    Bachelor thesis
    Open Access
  • Diseño de filtros de imagen con funciones de transferencia de dominio romboidal 

    Casas Rius, Joan Ramon; Torres Urgell, Lluís (1991)
    Conference report
    Open Access
    When orthogonal sampllng patterns are applled to digitize analogue images, some degree of spatial redundancy is lntroduced. Quincunx sampllng patterns allow to remove this redundant visual lnformation which consist of ...
  • Facial landmark detection using active shape models 

    Lopez Lillo, Gonzalo (Universitat Politècnica de Catalunya, 2014-10-31)
    Bachelor thesis
    Open Access
  • Formación de imágenes 3D de reflectividad radar en campo próximo con geometría de exploración esférica 

    Broquetas Ibars, Antoni; Jofre Roca, Lluís (1994)
    Conference report
    Open Access
    This document presents an algorithm for the reconstruction of 3D radar reflectivity images using spherical-wave ISAR techniques. The target is illuminated with an spherical wave and near-field backscatterig measurements ...
  • Formación de imágenes ISAR de alta resolución 

    Fabregas Canovas, Francisco Javier; Romeu Robert, Jordi; Broquetas Ibars, Antoni (1992)
    Conference report
    Open Access
    This paper presents the results of ISAR processing of RCS measurements performed over a broad frequency band (12 GHz - 40 GHz). The main purpose is to reach the highest resolution in reflectivity maps in order to identify ...
  • Formación de imagen por microondas mediante agrupamientos lineales ortogonales 

    Jofre Roca, Lluís; Ferrando Bataller, Miquel; Bolomey, Jean Charles (Consejo Superior de Investigaciones Científicas (CSIC), 1986)
    Conference report
    Open Access
    Capabilities of a microwave imaging system working in the air by using two crossed linear arrays are described. The analytic expressions of the focalization procedures are derived and resolution and available volume of ...
  • Human iris biometry 

    Largo Castellà, Juan Carlos (Universitat Politècnica de Catalunya, 2016-07-12)
    Bachelor thesis
    Open Access
    This project exposes the implementation of an iris based biometric system, from the theoretical basis to the implementation of it by examining different types of methods described in other documents. The human iris structure ...
  • Interfície gràfica d'usuari per a l'avaluació de classificadors d'imatges 

    Gimeno Ivorra, Mireia (Universitat Politècnica de Catalunya, 2010-05)
    Master thesis (pre-Bologna period)
    Open Access
    Aquest projecte final de carrera s'ha realitzat amb l'objectiu de crear una interfície gràfica capaç d'avaluar diferents classificadors d'una forma gràfica i molt intuïtiva. La interfície gràfica s'ha d'implementar dins ...
  • Migration of parking assist functionality to embedded platform 

    Romero Baena, Juan Alberto (Universitat Politècnica de Catalunya, 2012-09-06)
    Master thesis
    Restricted access - confidentiality agreement
    Covenantee:  Adasens Automotive
    [ANGLÈS] Migration to PC platform, and posterior migration to embedded hardware platform of an already existing functionality in privative platform.
  • New approaches for iris boundary localization 

    Pérez, Dídac; Fernández, Carles; Segura, Carlos; Hernando Pericás, Francisco Javier (Universidad de las Palmas de Gran Canarias, 2012)
    Conference report
    Open Access
    Iris segmentation is the most determining factor in iris biometrics, which has traditionally assumed rigid constrained environments. In this work, a novel method that covers the localization of the pupillaty and limbic ...
  • Obtención de imágenes ISAR de blancos móviles 

    Puente Baliarda, Carles; Broquetas Ibars, Antoni; Jofre Roca, Lluís (1992)
    Conference report
    Open Access
    A new method for motion compensation has been developed for radar imaging of moving targets (ISAR). Phase shifts (due to target motion) among adjacent pulses from a STEPPED FREQUENCY signal, are removed with a parabolic ...
  • Obtencion de un esqueleto morfologico sin puntos redundantes 

    Marqués Acosta, Fernando; Gasull Llampallas, Antoni; Torres Urgell, Lluís (1991)
    Conference report
    Open Access
    Skeleton is a powerful method to describe binary images. Although there are different possibilities to define a skeleton, is very common to use morphological skeleton because it is easy and fast for implementation purposes. ...
  • Open-ended visual question answering 

    Masuda Mora, Issey (Universitat Politècnica de Catalunya, 2016-07-15)
    Bachelor thesis
    Open Access
    This thesis studies methods to solve Visual Question-Answering (VQA) tasks with a Deep Learning framework. As a preliminary step, we explore Long Short-Term Memory (LSTM) networks used in Natural Language Processing (NLP) ...