Now showing items 41-60 of 249

    • Class-weighted convolutional features for visual instance search 

      Jiménez, Albert; Alvarez, Jose M.; Giró Nieto, Xavier (2017)
      Conference lecture
      Open Access
      Image retrieval in realistic scenarios targets large dynamic datasets of unlabeled images. In these cases, training or fine-tuning a model every time new images are added to the database is neither efficient nor scalable. ...
    • Cleaning and measuring tools using digital image processing methods 

      Torres Xirau, Iban (Universitat Politècnica de Catalunya / Fraunhofer-Institut für Produktionsanlagen und Konstruktionstechnik, 2013-07-31)
      Master thesis (pre-Bologna period)
      Open Access
      Covenantee:   Technische Universität Berlin
      [ANGLÈS] Many industrial machines use screws and other small tools to fix smaller components that compose the whole structure of the machine. To ensure that these tools withstand the pressures that can be subjected at, a ...
    • Click'n'Cut: crowdsourced interactive segmentation with object candidates 

      Carlier, Axel; Charvillat, Vincent; Salvador Aguilera, Amaia; Giró Nieto, Xavier; Marques, Ogé (ACM, 2014)
      Conference lecture
      Open Access
      This paper introduces Click’n’Cut, a novel web tool for inter- active object segmentation designed for crowdsourcing tasks. Click’n’Cut combines bounding boxes and clicks generated by workers to obtain accurate object ...
    • Combination of OCR engines for page segmentation based on performance evaluation 

      Ferrer Sumsi, Miquel; Valveny, Ernest (Institute of Electrical and Electronics Engineers (IEEE), 2007)
      Conference report
      Restricted access - publisher's policy
      In this paper we present a method to improve the performance of individual page segmentation engines based on the combination of the output of several engines. The rules of combination are designed after analyzing the ...
    • Combining geometric and appearance priors for pose recovery 

      Seradel Domingo, Eduard (Universitat Politècnica de Catalunya, 2009-09)
      Master thesis
      Restricted access - author's decision
      Estimar la pose (rotació i translació) de la càmera a partir dels punts d'interés de l'escena 3D i punts de la imatge 2D és un problema ben resolt en el cas que es coneguin les correspondències entre ells. No obstant, quan ...
    • Combining physical-based models and satellite images for the spatio-temporal assessment of soil infiltration capacity 

      Pedretti, Daniele; Fernández García, Daniel; Sánchez Vila, Francisco Javier; Barahona-Palomo, Marco; Bolster, Diogo (2011-05-29)
      Article
      Restricted access - publisher's policy
      The performance of managed artificial recharge (MAR) facilities by means of surface ponds (SP) is controlled by the temporal evolution of the global infiltration capacity Ic of topsoils. Cost-effective maintenance operations ...
    • Comprehensive retinal image analysis: image processing and feature extraction techniques oriented to the clinical task 

      Marrugo Hernández, Andrés Guillermo (Universitat Politècnica de Catalunya, 2013-11-29)
      Doctoral thesis
      Open Access
      Medical digital imaging has become a key element of modern health care procedures. It provides a visual documentation, a permanent record for the patients, and most importantly the ability to extract information about many ...
    • Computer generated ·D strokes 

      Forés Solar, Enric (Universitat Politècnica de Catalunya / Tongji University, 2014)
      Master thesis (pre-Bologna period)
      Open Access
      StrokeEbased rendering (SBR) is an approach to creating nonE photorealistic images (NPI) by placing discrete elements called strokes, such as paint strokes or stipples. Several lines of investigation are being followed ...
    • Concept Art para un cortometraje animado 

      Suárez Coffey, Megan (Universitat Politècnica de Catalunya, 2020-10-23)
      Bachelor thesis
      Open Access
      El presente trabajo de final de grado consiste en la creación de un artbook que recopila el Concept art de un cortometraje animado, Koda y Kiara. La historia de este se centra en un mundo fantástico, para el que se utilizará ...
    • Construction and qualification of a micro-tensile testing machine for lower scale digital image correlation applied to Zirconium alloys 

      Raventós Tato, Marc (Universitat Politècnica de Catalunya, 2014-06)
      Master thesis (pre-Bologna period)
      Open Access
      The aim of this project is the construction, programming and operation of a thermo-mechanical testing machine for the study of the mechanical properties of nuclear fuel cladding material. The strain information is estimated ...
    • Contextual Bag-Of-Visual-Words and ECOC-Rank for Retrieval and Multi-class Object Recognition 

      Mirza-Mohammadi, Mehdi (Universitat Politècnica de Catalunya, 2009)
      Master thesis
      Open Access
      Multi-class object categorization is an important line of research in Computer Vision and Pattern Recognition fields. An artificial intelligent system is able to interact with its environment if it is able to distinguish ...
    • Control and monitoring of a patient in a proton therapy session 

      Vallejo Miracle, Alex (Universitat Politècnica de Catalunya, 2014-02)
      Bachelor thesis
      Open Access
      Covenantee:   Université Catholique de Louvain
      [ANGLÈS] The main objective of that thesis is the implementation of a motion detection system within software Medusa, from the Centre de Protonthérapie d’Orsay (CPO, Paris), used for controlling a proton therapy session. ...
    • Conversión de nubes de puntos en áreas shape fyle vectorial. Detección de bordes en nubes de puntos a través de mallas y su conversión en áreas shapefile 

      Corso Sarmiento, Juan Manuel (2012-05-04)
      External research report
      Restricted access - author's decision
      (...) En este reporte se realiza un esfuerzo de crear una base de datos de áreas shapefile, nativa de programas de Sistemas de información Geográfica, como base para la construcción de modelos procedurales, que partirían ...
    • Copyright protection platform 

      Pau Monné, Roger (Universitat Politècnica de Catalunya, 2012-01-24)
      Master thesis (pre-Bologna period)
      Open Access
      English: development of a multimedia platform that allows the users to obtain videos containing a mark introduced by a watermarking technique.
    • Corrección del color en la tecnología de escáner láser terrestre. Problemáticas y estrategias para la corrección del color en levantamientos TLS 

      Corso Sarmiento, Juan Manuel (2012-10-08)
      External research report
      Restricted access - author's decision
      La intención de este reporte es plasmar los avances que ha tenido el LMVC, en relación a la proyección del color en el postproceso de levantamientos utilizando la tecnología de Escáner Láser Terrestre TLS. La adquisición ...
    • Crowdsourced object segmentation with a game 

      Salvador Aguilera, Amaia; Carlier, Axel; Giró Nieto, Xavier; Marques, Oge; Charvillat, Vincent (2013)
      Conference report
      Open Access
      We introduce a new algorithm for image segmentation based on crowdsourcing through a game : Ask'nSeek. The game provides information on the objects of an image, under the form of clicks that are either on the object, ...
    • Deep Learning on medical images image captioning on X-rays 

      Schwall, Immanuel Parzival (Universitat Politècnica de Catalunya, 2017-02-28)
      Master thesis
      Restricted access - confidentiality agreement
      Covenantee:   Eidgenössische Technische Hochschule Zürich
    • Demonstration of an open source framework for qualitative evaluation of CBIR systems 

      Gomez Duran, Paula; Mohedano, Eva; McGuinness, Kevin; Giró Nieto, Xavier; O'Connor, Noel (Association for Computing Machinery (ACM), 2018)
      Conference lecture
      Open Access
      Evaluating image retrieval systems in a quantitative way, for example by computing measures like mean average precision, allows for objective comparisons with a ground-truth. However, in cases where ground-truth is not ...
    • Depth map compression via 3D region-based representation 

      Maceira, Marc; Morros Rubió, Josep Ramon; Ruiz Hidalgo, Javier (2016-07-21)
      Article
      Open Access
      In 3D video, view synthesis is used to create new virtual views between encoded camera views. Errors in the coding of the depth maps introduce geometry inconsistencies in synthesized views. In this paper, a new 3D ...
    • Depth order estimation for video frames using motion occlusions 

      Palou, Guillem; Salembier Clairon, Philippe Jean (2014-04-01)
      Article
      Restricted access - publisher's policy
      This study proposes a system to estimate the depth order of regions belonging to a monocular image sequence. For each frame, the regions are ordered according to their relative depth using information from the previous and ...