Exploració per autor "López Martínez, Carlos"
Ara es mostren els items 27-46 de 132
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Bilateral distance based filtering for polarimetric SAR data
(2013-10-30)
Article
Accés obertThis 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
(IEEE, 2011)
Comunicació de congrés
Accés restringit per política de l'editorialThe 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 ... -
Built-up area mapping using Sentinel-1 SAR data
(Elsevier, 2023-09)
Article
Accés restringit per política de l'editorialA timely and accurate spatial mapping of built-up areas (BA) is crucial in making cities and human settlements safe, resilient, and sustainable. Synthetic Aperture Radar (SAR) data are useful for BA mapping due to strong ... -
Burned area prediction in Southern Asia using machine learning with land and atmospheric parameters
(Institute of Electrical and Electronics Engineers (IEEE), 2023)
Comunicació de congrés
Accés obertIn the work a random forest model has been implemented as an interpretable machine learning tool in the effort to estimate the burned areas caused by fire outbreaks in India, Pakistan, and Myanmar in April and May 2022. ... -
Cancellation of scattering mechanisms in PolInSAR: application to underlying topography estimation
(IEEE Press. Institute of Electrical and Electronics Engineers, 2013-02)
Article
Accés restringit per política de l'editorialThis 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 ... -
Chapter 1.6: Early warning signals of Earth system tipping points
(University of Exeter, 2023)
Capítol de llibre
Accés obertThis chapter focuses on the methods used to predict the movement of parts of the Earth system towards tipping points. It begins by introducing the theory of critical slowing down (CSD), a general phenomenon of slowing ... -
Coastline detection based on Sentinel-1 time series for ship- and flood-monitoring applications
(2020-10)
Article
Accés obertThis letter addresses the use of the Sentinel-1 time series with the aim of proposing an automatic and unsupervised coastline detection method that averages the dynamical variations of coastal areas over a limited period ... -
Coherence estimation in synthetic aperture radar data based on speckle noise modeling
(Optical Society of America, 2007-02-28)
Article
Accés obertIn the past we proposed a multidimensional speckle noise model to which we now include systematic phase variation effects. This extension makes it possible to define what is believed to be a novel coherence model able to ... -
Crop classification of multitemporal PolSAR based on 3-D attention module with ViT
(Institute of Electrical and Electronics Engineers (IEEE), 2023-04-26)
Article
Accés obertMultitemporal polarimertic SAR is considered to be very effective in crop classification and cultivated land detection, which has received much attention from researchers. Currently, for most multitemporal polarimetric SAR ... -
Differential SAR interferometry with orbital, airborne and ground-based sensors
(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 -
DNN-based PolSAR image classification on noisy labels
(2022-04-22)
Article
Accés obertDeep neural networks (DNNs) appear to be a solution for the classification of polarimetric synthetic aperture radar (PolSAR) data in that they outperform classical supervised classifiers under the condition of sufficient ... -
Dual-polarimetric descriptors from Sentinel-1 GRD SAR data for crop growth assessment
(2021-08)
Article
Accés obertAccurate and high-resolution spatio-temporal information about crop phenology obtained from Synthetic Aperture Radar (SAR) data is an essential component for crop management and yield estimation at a local scale. Crop ... -
Edge enhancement algorithm based on the wavelet transform for automatic edge detection in SAR images
(IEEE Press. Institute of Electrical and Electronics Engineers, 2011-01-01)
Article
Accés obertThis paper presents a novel technique for automatic edge enhancement and detection in synthetic aperture radar (SAR) images. The characteristics of SAR images justify the importance of an edge enhancement step prior to ... -
Estimation of gravimetric vegetation moisture in the western United States using a multi-sensor approach
(Institute of Electrical and Electronics Engineers (IEEE), 2023)
Text en actes de congrés
Accés obertVegetation optical depth (VOD) depends on the water, structure, and biomass of vegetation. Here, we propose a multi-sensor approach to isolate the water component from the VOD and to retrieve gravimetric vegetation moisture ... -
Estimation of snow pack characteristics by means of polarimetric SAR data
(SPIE, 2012)
Text en actes de congrés
Accés restringit per política de l'editorialCharacterization 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 ... -
Estimation of vegetation structure parameters from SMAP radar intensity observations
(Institute of Electrical and Electronics Engineers (IEEE), 2021-01-01)
Article
Accés obertIn this article, we present a multipolarimetric estimation approach for two model-based vegetation structure parameters (shape A and orientation distribution ψ of the main canopy elements). The approach is based on a reduced ... -
Evaluation of a bilateral filtering approach for tomographic SAR denoising
(VDE-Verlag, 2016)
Comunicació de congrés
Accés restringit per política de l'editorialThis work proposes to evaluate the effects of a spatially adaptive filter called NDSAR-BLF (N-Dimensional SAR Bilateral Filter) on scatterer separation and height estimation from SAR tomograms. We have developed a spatial ... -
Examen Final
(Universitat Politècnica de Catalunya, 2021-01-23)
Examen
Accés restringit a la comunitat UPC -
Examen Final
(Universitat Politècnica de Catalunya, 2020-06-09)
Examen
Accés restringit a la comunitat UPC -
Examen Final
(Universitat Politècnica de Catalunya, 2021-06-22)
Examen
Accés restringit a la comunitat UPC
