Exploració per autor "Alonso González, Alberto"Més informació

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    • Space-Time PolSAR data temporal series processing based on binary partition trees 

      Alonso González, Alberto; López Martínez, Carlos (2012)
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      A processing technique to exploit temporal series of coregistered Polarimetric Synthetic Aperture Radar (PolSAR) images is presented in this paper. This technique will be based on a region-based and multi-scale data ...

    • 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)
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      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)
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      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 ...

    • Target characterization by means of PolInSAR temporal evolution 

      Alonso González, Alberto; López Martínez, Carlos (Institute of Electrical and Electronics Engineers (IEEE), 2014)
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      This work focuses 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) data ...

    • Temporal PolSAR image series exploitation with binary partition trees 

      Alonso González, Alberto; López Martínez, Carlos; Salembier Clairon, Philippe Jean (IEEE, 2012)
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      In this paper, the processing of temporal PolSAR image series is addressed through a region-based and multi-scale data representation, the Binary Partition Tree (BPT). This structure contains useful information related ...

    • 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)
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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 ...

    • Variable local weight filtering for PolSAR data speckle noise reduction 

      Alonso González, Alberto; López Martínez, Carlos; Salembier Clairon, Philippe Jean (IEEE, 2012)
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      This paper presents a Polarimetric SAR data speckle filtering technique, based on a combined filtering in the spatial and polarimetric domains. It is based on a bilateral filtering employing distance measures over these ...