Now showing items 21-40 of 44

    • Image-Based Query by Example Using MPEG-7 Visual Descriptors 

      Ventura Royo, Carles (Escola Tècnica Superior de Telecomunicació de Barcelona, 2010)
      Master thesis (pre-Bologna period)
      Open Access
      This project presents the design and implementation of a Content-Based Image Retrieval (CBIR) system where queries are formulated by visual examples through a graphical interface. Visual descriptors and similarity measures ...
    • Improvements in the registration of multimodal medical imaging : application to intensity inhomogeneity and partial volume corrections 

      Jiménez González, Xavier (Universitat Politècnica de Catalunya, 2016-12-23)
      Doctoral thesis
      Open Access
      Alignment or registration of medical images has a relevant role on clinical diagnostic and treatment decisions as well as in research settings. With the advent of new technologies for multimodal imaging, robust registration ...
    • Introducción de la información de profundidad en una técnica de co-clustering jerárquico temporal 

      Alfaro Vendrell, Mónica (Universitat Politècnica de Catalunya, 2015-07)
      Master thesis (pre-Bologna period)
      Open Access
      Video segmentation aims to consistently group regions that are similar in appearance and movement along a sequence. This task is an essential step of video analysis and it has important applications in video coding, indexing ...
    • Metamaterial analysis using image processing techniques 

      Pereira Dos Santos, Victor Jerri (Universitat Politècnica de Catalunya, 2020-07)
      Bachelor thesis
      12 months embargo
      Metamaterials have become the target of many researchers due to the vast potential applications they offer, from micro antennas to invisibility cloaks. Experiments for assessing the characteristics of metamaterial designs ...
    • Metamaterial structure analysis using graphs 

      Manzano Balsells, Marta (Universitat Politècnica de Catalunya, 2021-01-02)
      Bachelor thesis
      Open Access
      One of the current scientific challenges is to progress in research on metamaterials to contribute to their practical applications. The transfer of this knowledge is showing applications in the scientific, technological, ...
    • Modeling temporal dependency of brain responses to rapidly presented stimuli in ERP based BCIs 

      Fernández Cañellas, Dèlia (Universitat Politècnica de Catalunya / Northeastern University (Boston, Massachusetts), 2013-12-13)
      Bachelor thesis
      Open Access
      Covenantee:   Northeastern University
      [ANGLÈS] Brain computer interface technologies aim, among a number of possible goals, to help people with motor and speech disabilities to communicate through a computer using the electrical activity in the brain, allowing ...
    • Multiple object tracking using deep learning techniques 

      Prat Ortonobas, Laia (Universitat Politècnica de Catalunya, 2020-06)
      Bachelor thesis
      Open Access
      This project has been devoted to (i) learning what Multiple Object Tracking (MOT) is, (ii) learning Python, one of the most used languages in Machine Learning and computer vision, and (iii) to evaluate a tracker (TrajTrack), ...
    • Non-rigid registration of 3D face scans 

      Soler Arasanz, Carlota (Universitat Politècnica de Catalunya, 2015-01-17)
      Bachelor thesis
      Open Access
      Covenantee:   École polytechnique fédérale de Lausanne
      [ANGLÈS] The context of this thesis lies on building a model capable of recognizing human facial expressions and that is robust against identity. For recognizing these two aspects, the model has to be trained in advance. ...
    • Object instance segmentation using recurrent models 

      Morales Vega, Juan Carlos (Universitat Politècnica de Catalunya, 2017-06)
      Bachelor thesis
      Open Access
      Covenantee:   University of Toronto
      This work intends to expand the Polygon-RNN model for object segmentation, able to create a polygon outlining an object using a CNN and a RNN, by trying several modifications. Several models and approaches have been explored. ...
    • Optimization of Segmentation-Based Video Sequence Coding Techniques. Application to content based functionalities 

      Morros Rubió, Josep Ramon (Universitat Politècnica de Catalunya, 2004-12-23)
      Doctoral thesis
      Open Access
      En aquest treball s'estudia el problema de la compressió de video utilitzant funcionalitats basades en el contingut en el marc teòric dels sistemes de codificació de seqüències de video basats en regions. Es tracten ...
    • Part-based object retrieval with binary partition trees 

      Giró Nieto, Xavier (Universitat Politècnica de Catalunya, 2012-05-31)
      Doctoral thesis
      Open Access
      This thesis addresses the problem of visual object retrieval, where a user formulates a query to an image database by providing one or multiple examples of an object of interest. The presented techniques aim both at finding ...
    • Pin-hole camera calibration in football scenes based on the Hough transform 

      Espinosa Fricke, Pedro-Christian (Universitat Politècnica de Catalunya, 2010-05-10)
      Master thesis (pre-Bologna period)
      Open Access
      This work deals with camera calibration in general views of football match broadcast sequences. In this context, to calibrate a camera, which is determining the camera real-world location and where it is pointing at, is ...
    • Region-based face detection, segmentation and tracking. framework definition and application to other objects 

      Vilaplana Besler, Verónica (Universitat Politècnica de Catalunya, 2010-12-17)
      Doctoral thesis
      Open Access
      One of the central problems in computer vision is the automatic recognition of object classes. In particular, the detection of the class of human faces is a problem that generates special interest due to the large number ...
    • Region-based particle filter 

      Girbau Xalabarder, Andreu (Universitat Politècnica de Catalunya, 2015-02-17)
      Bachelor thesis
      Open Access
      [ANGLÈS] In this project the implementation of a video object tracking technique based on a particle filter that uses the partitions of the various frames in the video has been tackled. This is an extension of the standard ...
    • Region-based particle filter leveraged with a hierarchical co-clustering 

      Varas González, David (Universitat Politècnica de Catalunya, 2016-11-14)
      Doctoral thesis
      Open Access
      In this thesis, we exploit the hierarchical information associated with images to tackle two fundamental problems of computer vision: video object segmentation and video segmentation. In the first part of the thesis, we ...
    • SPM Toolbox para el registro y cuantificación de imágenes dinámicas PET en roedores 

      Martínez Zalacaín, Ignacio (Universitat Politècnica de Catalunya, 2016-10-25)
      Master thesis (pre-Bologna period)
      Open Access
      Neuroimaging studies in preclinical research are an essential prerequisite for the development of drugs and biomarkers for human step. Being able to superimpose the functional and biological information provided by imaging ...
    • Statistical analysis for global tractography 

      Puig Castro, Alba (Universitat Politècnica de Catalunya / École polytechnique fédérale de Lausanne, 2013-07-31)
      Master thesis (pre-Bologna period)
      Open Access
      Covenantee:   École polytechnique fédérale de Lausanne
      [ANGLÈS] Tractography is a promising modeling technique to satisfy the increasing need for tracing the white matter pathways within the brain in a non invasive way. Therefore, better ways for doing tractography are currently ...
    • System for caption text extraction on a hierarchical region-based image representation 

      Zaytseva, Ekaterina (Universitat Politècnica de Catalunya, 2011-07-11)
      Master thesis
      Open Access
      English: This work presents a technique for detecting caption text for indexing purposes. This technique is to be included in a generic indexing system dealing with other semantic concepts. The various object detection ...
    • The design of a robust 3D Reconstruction system for video sequences in non controlled environments 

      Herrero Molina, Nicolás (Universitat Politècnica de Catalunya, 2010-02-10)
      Master thesis
      Open Access
      Along this thesis, a novel and robust approach for obtaining 3D models from video sequences captured with hand-held cameras is adressed. This work defines a fully automatic pipeline that is able to deal with diferent ...
    • Tools for image retrieval in large multimedia databases 

      Ventura Royo, Carles (Universitat Politècnica de Catalunya, 2011-09-07)
      Master thesis
      Open Access
      English: One of the challenges in the development of an image retrieval system is to achieve an efficient indexing scheme since both developers and users, who are used to make requests in order to find a multimedia element ...