Ara es mostren els items 8-27 de 35

    • Bilateral distance based filtering for polarimetric SAR data 

      Alonso González, Alberto; López Martínez, Carlos; Salembier Clairon, Philippe Jean; Deng, Xinping (2013-10-30)
      Article
      Accés obert
      This paper introduces a non-linear Polarimetric SAR data filtering approach able to preserve the edges and small details of the data. It is based on exploiting the data locality in both, the spatial and the polarimetric ...
    • Binary partition tree as a polarimetric SAR data representation in the space-time domain 

      Alonso González, Alberto; López Martínez, Carlos; Salembier Clairon, Philippe Jean (IEEE, 2011)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      The aim of this paper is to present a Polarimetric Synthetic Aperture Radar data processing technique on the space-time domain. This approach is based on a Binary Partition Tree (BPT), which is a region-based and multi-scale ...
    • Differential SAR interferometry with orbital, airborne and ground-based sensors 

      Monells Miralles, Daniel; Mallorquí Franquet, Jordi Joan; Aguasca Solé, Alberto; Broquetas Ibars, Antoni; Fabregas Canovas, Francisco Javier; López Martínez, Carlos; Alonso González, Alberto; Iglesias González, Rubén; Centolanza, Giuseppe (2011)
      Comunicació de congrés
      Accés obert
      • Introduction to Differential Interferometry • Orbital Sensors: ERS, ENVISAT, RADARSAT2, TerraSAR-X. • Airborne Sensors: DLR’s E-SAR • Ground-Based Sensors: UPC’s GB-SAR • Conclusions
    • Estimation of snow pack characteristics by means of polarimetric SAR data 

      Reppucci, Antonio; Banque, Xavier; López Martínez, Carlos; Zhan, Yu; Alonso González, Alberto (SPIE, 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Characterization of the snow-pack is fundamental for several applications in hydrology, such as modelling and forecasting of snow melt runoff, water resource management and risk analysis. Thanks to its night/day capabilities ...
    • Filtering and segmentation of polarimetric SAR data based on binary partition trees 

      Alonso González, Alberto; López Martínez, Carlos; Salembier Clairon, Philippe Jean (IEEE Press. Institute of Electrical and Electronics Engineers, 2012-02)
      Article
      Accés restringit per política de l'editorial
      In this paper,we propose the use of binary partition trees (BPT) to introduce a novel region-based and multi-scale polarimetric SAR (PolSAR) data representation. The BPT structure represents homogeneous regions in the ...
    • Filtering and segmentation of polarimetric SAR images with binary partition trees 

      Alonso González, Alberto; López Martínez, Carlos; Salembier Clairon, Philippe Jean (2010)
      Text en actes de congrés
      Accés obert
      A new multi-scale PolSAR data filtering technique, based on a Binary Partition Tree (BPT) representation of the data, is proposed. Different alternatives for the construction and the exploitation of the BPT for filtering ...
    • Ground topography estimation on over forests considering polarimetric SAR interferometry 

      López Martínez, Carlos; Alonso González, Alberto; Fabregas Canovas, Francisco Javier; Papathanassiou, Kostantinos (2010)
      Text en actes de congrés
      Accés obert
      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 ...
    • Implementación de herramientas de validación de política de firma electrónica 

      Alonso González, Alberto (Universitat Politècnica de Catalunya, 2007-06-25)
      Projecte/Treball Final de Carrera
      Accés obert
    • Land, jet stream, and other atmospheric effects on burned area estimation during the South Asian heatwave of 2022 

      Irawan, Amir Mustofa; Vall-Llossera Ferran, Mercedes Magdalena; López Martínez, Carlos; Camps Carmona, Adriano José; Chaparro Danon, David; Portal González, Gerard; Pablos Hernández, Miriam; Alonso González, Alberto (2024-04)
      Article
      Accés obert
      Understanding the key variables that characterise fire propagation is important for a better estimation of fire events and their impacts. This study uses machine learning combined with satellite remote sensing and atmospheric ...
    • Multidimensional and temporal SAR data representation and processing based on binary partition trees 

      Alonso González, Alberto (Universitat Politècnica de Catalunya, 2014-06-13)
      Tesi
      Accés obert
      This thesis deals with the processing of different types of multidimensional SAR data for distinct applications. Instead of handling the original pixels of the image, which correspond to very local information and are ...
    • Multidimensional SAR data analysis based on binary partition trees and the covariance matrix geometry 

      Alonso González, Alberto; López Martínez, Carlos; Salembier Clairon, Philippe Jean; Valero Valbuena, Silvia; Chanussot, Jocelyn (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this paper, we propose the use of the Binary Partition Tree (BPT) as a region-based and multi-scale image representation to process multidimensional SAR data, with special emphasis on polarimetric SAR data. We also ...
    • Multidimensional SAR data representation and processing based on Binary Partition Trees 

      Alonso González, Alberto (Universitat Politècnica de Catalunya, 2011-07-20)
      Projecte Final de Màster Oficial
      Accés obert
      English: A novel multidimensional SAR data abstraction is presented, based on Binary Partition Trees (BPT). This data abstraction is employed for different applications, as data filtering and segmentation, change detection, ...
    • Past and new trends in polarimetric and multidimensional SAR data Speckle noise filtering 

      López Martínez, Carlos; Alonso González, Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Speckle noise represents one of the main components of the multidimensional SAR signal that limit the complete exploitation of multidimensional SAR data, and polarimetric SAR data in particular. This paper consider the ...
    • PAU instrument aboard INTA MicroSat-1: flight model tests 

      Alonso González, Alberto; Camps Carmona, Adriano José; Pascual Biosca, Daniel; Hyuk, Park; Alcayde Egea, Antonio; Chavero, Sergio; Martinez, Pedro; Crespo, Luis; Angulo, Manuel; Rius, Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This work presents the PAU instrument aboard the satellite INTA MicroSAT-1. The PAU instrument is a combination of a Radiometer and a GNSS Reflectometer designed to study the relationship GNSS-R observables (Delay Doppler ...
    • Perturbation analysis of eigenvector-based target decomposition theorems in radar polarimetry 

      López Martínez, Carlos; Alonso González, Alberto; Fabregas Canovas, Francisco Javier (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Article
      Accés restringit per política de l'editorial
      A novel analysis of the statistics of the eigendecomposition of the coherency matrix and the H/A/a¯ parameters of polarimetric synthetic aperture radar data is addressed. The objective is to overcome previous approaches ...
    • Polarimetric optimization for DInSAR pixel selection with ground-based SAR 

      Iglesias González, Rubén; Fabregas Canovas, Francisco Javier; Aguasca Solé, Alberto; López Martínez, Carlos; Alonso González, Alberto; Mallorquí Franquet, Jordi Joan (IEEE, 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this paper, the study of polarimetric optimization techniques for Differential SAR Interferometry (DInSAR) applications is analyzed. This work has been carried out in the framework of deformation map retrieval on ...
    • Polarimetric SAR time series change analysis over agricultural areas 

      Alonso González, Alberto; López Martínez, Carlos; Papathanassiou, Kostantinos; Hajnsek, Irena (Institute of Electrical and Electronics Engineers (IEEE), 2020-10)
      Article
      Accés obert
      This article proposes a change detection and analysis technique for monitoring the phenological development of agricultural vegetation by means of multitemporal Polarimetric Synthetic Aperture Radar (PolSAR) acquisitions. ...
    • PolInSAR temporal series analysis with Binary Partition Trees 

      Alonso González, Alberto; López Martínez, Carlos (VDE Conference Publications, 2014)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      This work is focused on the exploitation of PolSAR and PolInSAR temporal series datasets, in the context of change detection and characterization. Instead of a classical pixel-based approach, a Binary Partition Tree (BPT) ...
    • PolSAR time series processing with Binary Partition Trees 

      Alonso González, Alberto; López Martínez, Carlos; Salembier Clairon, Philippe Jean (Institute of Electrical and Electronics Engineers (IEEE), 2014-06-01)
      Article
      Accés restringit per política de l'editorial
      This paper deals with the processing of polarimetric synthetic aperture radar (SAR) time series. Different approaches to deal with the temporal dimension of the data are considered, which are derived from different target ...
    • 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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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 ...