Exploració per autor "Alonso González, Alberto"Més informació

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    • A maximum likelihood analysis of the RVoG model for forestry studies in polarimetric SAR interferometry 

      López Martínez, Carlos; Alonso González, Alberto (European Space Agency (ESA), 2013)
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      This work analyses the validity of the RVoG model as- sumption in case of PolInSAR data in forestry analy- sis. In order to assure that the interferometric coherence describes a line, as imposed by the RVoG model, ...

    • A random forest approach for soil moisture estimation at 60 meters spatial resolution 

      Portal González, Gerard; Vall-Llossera Ferran, Mercedes Magdalena; López Martínez, Carlos; Camps Carmona, Adriano José; Pablos Hernández, Miriam; Chaparro Danon, David; Irawan, Amir Mustofa; Alonso González, Alberto; Jagdhuber, Thomas (Institute of Electrical and Electronics Engineers (IEEE), 2023)
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      A Random Forest (RF) regression-tree method to derive high-resolution (60 m) surface soil moisture maps is proposed in this study. The developed methodology integrates multi-source synergies by incorporating information ...

    • Advanced polarimetric optimization for DInSAR applications with Ground-Based SAR 

      Iglesias González, Rubén; Fabregas Canovas, Francisco Javier; Aguasca Solé, Alberto; López Martínez, Carlos; Alonso González, Alberto (2012)
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      In this paper, the applications of advanced polarimetric optimization techniques for Differential Interferometric SAR (DInSAR) pixel selection are explored in the framework of deformation map retrieval in landslides. ...

    • Analysis and validity of the polInSAR line model on forested areas 

      López Martínez, Carlos; Fabregas Canovas, Francisco Javier; Alonso González, Alberto (2012)
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      This paper focuses on the analysis of certain hypotheses considered in quantitative remote sensing of forest areas by means of Polarimetric SAR Interferometry (PolInSAR). When addressing the quantitative estimation of ...

    • Analysis of volumetric scatters based on TanDEM-X polarimetric interferometric SAR data 

      López Martínez, Carlos; Alonso González, Alberto; Fabregas Canovas, Francisco Javier; Papathanassiou, Kostantinos (IEEE, 2011)
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      Polarimetric SAR Interferometry makes possible a detailed analysis of the volumetric scattering processes present in microwave scattering in case of forest areas. In previous contributions, the authors, under the hypothesis ...

    • Análisis de técnicas basadas en árboles de partición binaria aplicadas a PoISAR 

      Alonso González, Alberto (Universitat Politècnica de Catalunya, 2009-09-07)
      Projecte/Treball Final de Carrera
      Accés obert

    • Assessment and estimation of the RVoG model in polarimetric SAR interferometry 

      López Martínez, Carlos; Alonso González, Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2014-06-01)
      Article
      Accés restringit per política de l'editorial
      This paper investigates the validity of the random-volume-over-ground (RVoG) scattering model assumption for forest scattering on polarimetric interferometric synthetic aperture radar (PolInSAR) data. The model makes some ...

    • 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)
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      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)
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      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)
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      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 ...