Now showing items 1-16 of 16

    • Activities in imaging through fog at CD6: polarimetric imaging 

      Peña Gutiérrez, Sara; Ballesta Garcia, Maria; Royo Royo, Santiago (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Conference report
      Restricted access - publisher's policy
      The CD6 has recently developed a powerful line of research on polarimetric imaging. This field covers several applications in which the addition of polarization properties enables to enhance the contrast in detection. ...
    • Activities in imaging through fog at CD6: polarized light propagation modelling 

      Ballesta Garcia, Maria; Peña Gutiérrez, Sara; Royo Royo, Santiago (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Conference report
      Restricted access - publisher's policy
      Currently, in CD6, a new line of research devoted to polarimetric imaging is being developed. The use of polarization adds new information that is not reachable using other conventional imaging modes. In addition, recent ...
    • Análisis de técnicas basadas en árboles de partición binaria aplicadas a PoISAR 

      Alonso González, Alberto (Universitat Politècnica de Catalunya, 2009-09-07)
      Master thesis (pre-Bologna period)
      Open Access
    • Cancellation of scattering mechanisms in PolInSAR: application to underlying topography estimation 

      López Martínez, Carlos; Papathanassiou, Kostantinos (IEEE Press. Institute of Electrical and Electronics Engineers, 2013-02)
      Article
      Restricted access - publisher's policy
      This paper investigates the polarimetric dependence of the interferometric complex correlation and proposes amethodology for cancelling individual scattering mechanisms, in terms of the complex correlation coefficient ...
    • DInSAR processing with polarimetric data 

      Monells Miralles, Daniel (Universitat Politècnica de Catalunya, 2011-09-09)
      Master thesis
      Open Access
      English: Study of the uses of orbital polarimetric data for the survey of terrain subsidence through SAR Differential interferometry (DInSAR).
    • Imaging polarimetry for bio applications 

      Aguado Guaita, Sara (Universitat Politècnica de Catalunya, 2021-09-08)
      Master thesis
      Open Access
      Covenantee:   Universitat de Barcelona / Universitat Autònoma de Barcelona
      Polarimetric imaging is especially interesting for the fields of biology and medicine due to the capability of this technique to emphasize certain abnormalities in tissue such as cancerous growths that can interact differently ...
    • Improving wishart classification of polarimetric SAR data using the hopfield neural network optimization approach 

      Pajares Martinsanz, Gonzalo; López Martínez, Carlos; Sánchez Lladó, Francisco Javier; Molina, Iñigo (2012-11-19)
      Article
      Restricted access - publisher's policy
      This paper proposes the optimization relaxation approach based on the analogue Hopfield Neural Network (HNN) for cluster refinement of pre-classified Polarimetric Synthetic Aperture Radar (PolSAR) image data. We consider ...
    • Indices of polarimetric purity: application in biological tissue 

      Rodríguez Mangues, Carla; van Eeckhout Alsinet, Albert; Garcia Caurel, Enrique; Gil Pérez, José Jorge; Garnatje, Teresa; González Arnay, Emilio; Vidal Gonzalez, Josep; Escalera, Juan Carlos; Moreno Soriano, Ignacio; Campos Coloma, Juan; Lizana Tutusaus, Angel (2021-05-13)
      Conference lecture
      Open Access
    • Low temperature back-surface-field contacts deposited by hot-wire CVD for heterojunction solar cells 

      Muñoz Cervantes, Delfina; Voz Sánchez, Cristóbal; Martín García, Isidro; Orpella García, Alberto; Alcubilla González, Ramón; Villar, F; Bertomeu Balaguero, Joan; Andreu Batallé, Jordi; Roca-I-Cabarrocas, P (2008-08)
      Article
      Open Access
      The growing interest in using thinner wafers (< 200 µm) requires the development of low temperature passivation strategies for the back contact of heterojunction solar cells. In this work, we investigate low temperature ...
    • Magneto-optical Kerr effect measurement at low temperatures 

      Vlašín, Ondřej (Universitat Politècnica de Catalunya, 2008-09-05)
      Master thesis
      Open Access
      Ellipsometry is particularly attractive for its suitability for in-situ measurements and remarkable sensitivity to minute inter-facial effects, such as the formation of sub-monolayer of atoms or magneto-optical (MO) effect. ...
    • Medida de superficies 3D mediante imagen polarimétrica 

      Peña Gutiérrez, Sara; Maynou Ribas, Paula; Ballesta Garcia, Maria; Royo Royo, Santiago (Comité de Optoelectrónica, 2021)
      Conference lecture
      Restricted access - publisher's policy
      La polarización de la luz reflejada en un objeto aporta información sobre su índice de refracción, su rugosidad, y también de su forma. Así, esta propiedad de la luz puede ser útil en visión artificial para recuperar la ...
    • Polarimetric imaging vs. conventional imaging: evaluation of image contrast in fog 

      Ballesta Garcia, Maria; Peña Gutiérrez, Sara; Val Martí, Aina; Royo Royo, Santiago (2021-06-24)
      Article
      Open Access
      We compare conventional intensity imaging against different modes of polarimetric imaging by evaluating the image contrast of images taken in a controlled foggy environment. A small-scale fog chamber has been designed and ...
    • Polsar time series temporal change detection and analysis with binary partition trees 

      Alonso González, Alberto; López Martínez, Carlos (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Conference report
      Restricted access - publisher's policy
      In this paper the exploitation of PolSAR temporal series datasets is presentedin the context of change detection and characterization. A Binary Partition Tree (BPT) data structure is employed in order to extract homogeneous ...
    • Statistical study of the H/A/Alpha decomposition based on a perturbation analysis of the coherency matrix 

      López Martínez, Carlos; Alonso González, Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Conference report
      Restricted access - publisher's policy
      The eigendecomposition of the coherency matrix, as well as the Entropy, Anisotropy and mean Alpha angle are crucial for the physical understanding of the scattered echo in SAR polarimetry. This contribution considers a ...
    • Study of the speckle noise effects over the eigen decomposition of polarimetric SAR data: a review 

      López Martínez, Carlos; Alonso González, Alberto; Fabregas Canovas, Francisco Javier (European Space Agency (ESA), 2013)
      Conference report
      Restricted access - publisher's policy
      This paper is focused on considering the effects of speckle noise on the eigen decomposition of the co- herency matrix. Based on a perturbation analysis of the matrix, it is possible to obtain an analytical expression ...
    • Underlying topography estimation and separation of scattering contributions over forests based on polInSAR data 

      López Martínez, Carlos; Alonso González, Alberto; Fabregas Canovas, Francisco Javier; Papathanassiou, Kostantinos (2011)
      Conference report
      Restricted access - publisher's policy
      The work detailed in this paper analyzes the topographic phase retrieval process on forested areas by means of Polarimetric Interferometric SAR data. On the basis of the Random Volume over Ground scattering model, an ...