Now showing items 1-9 of 9

    • The added value of stratified topographic correction of multispectral images 

      Sola Torralba, Ion Upna; González Audicana, María Upna; Álvarez Mozos, Jesús Upna (MDPI, 2016)   Artículo / Artikulua  OpenAccess
      Satellite images in mountainous areas are strongly affected by topography. Different studies demonstrated that the results of semi-empirical topographic correction algorithms improved when a stratification of land covers ...
    • Automatic detection of uprooted orchards based on orthophoto texture analysis 

      Ciriza Labiano, Raquel; Sola Torralba, Ion Upna; Albizua, Lourdes; Álvarez Mozos, Jesús Upna; González Audicana, María Upna (MDPI, 2017)   Artículo / Artikulua  OpenAccess
      Permanent crops, such as olive groves, vineyards and fruit trees, are important in European agriculture because of their spatial and economic relevance. Agricultural geographical databases (AGDBs) are commonly used by ...
    • Desarrollo de productos avanzados para la misión SEOSAT/Ingenio 

      Sabater, N.; Ruiz Verdú, A.; Delegido, J.; Fernández Beltrán, R.; Latorre Carmona, P.; Pla, F.; González Audicana, María Upna; Álvarez Mozos, Jesús Upna; Sola Torralba, Ion Upna; Villa, G.; Tejeiro, J. A.; Miguel, E. de; Jiménez, M.; Molina, S.; Moreno, J. (Universitat Politecnica de Valencia, 2016)   Artículo / Artikulua  OpenAccess
      SEOSAT/Ingenio es la futura misión española de observación de la Tierra en el óptico en alta resolución espacial. Mientras que los productos de imagen a Nivel 1, radiancias geo-referenciadas a nivel de sensor, se encuentran ...
    • Evaluación multitemporal de métodos de corrección topográfica mediante el uso de imágenes sintéticas multiespectrales 

      Sola Torralba, Ion Upna; Álvarez Mozos, Jesús Upna; González Audicana, María Upna; Torres Escribano, José Luis Upna (Asociación Española de Teledetección, 2014)   Artículo / Artikulua  OpenAccess
      En este trabajo se presentan los resultados de la evaluación multitemporal de varios métodos de corrección topográfica (TOC), cuya bondad se determina de forma cuantitativa mediante el uso de imágenes sintéticas multiespectrales ...
    • Evaluation of 2D models for the prediction of surface depression storage using realistic reference values 

      Giménez Díaz, Rafael Upna; Mezkiritz Barberena, Irantzu; Campo-Bescós, Miguel Upna; Álvarez-Mozos, Jesús Upna; González-Audicana, María Upna; Martínez de Aguirre Escobar, Alejandro Upna; Casalí Sarasíbar, Javier Upna (Wiley, 2016)   Artículo / Artikulua  OpenAccess
      Depression storage (DS) is the maximum storage of precipitation and runoff in the soil surface at a given slope. The DS is determined by soil roughness that in agricultural soils is largely affected by tillage. The direct ...
    • Influence of surface roughness spatial variability and temporal dynamics on the retrieval of soil moisture from SAR observations 

      Álvarez Mozos, Jesús Upna; Verhoest, Niko E. C.; Larrañaga, Arantzazu Upna; Casalí Sarasíbar, Javier Upna; González Audicana, María Upna (MDPI, 2009)   Artículo / Artikulua  OpenAccess
      Radar-based surface soil moisture retrieval has been subject of intense research during the last decades. However, several difficulties hamper the operational estimation of soil moisture based on currently available ...
    • Multi-criteria evaluation of topographic correction methods 

      Sola Torralba, Ion Upna; González Audicana, María Upna; Álvarez Mozos, Jesús Upna (Elsevier, 2016)   Artículo / Artikulua  OpenAccess
      In the last decades, several topographic correction methods (TOC) have been proposed, but there is not an agreement on the best method. Furthermore, different evaluation criteria have been used in the past, and there is ...
    • Synthetic images for evaluating topographic correction algorithm 

      Sola Torralba, Ion Upna; González Audicana, María Upna; Álvarez Mozos, Jesús Upna; Torres Escribano, José Luis Upna (IEEE, 2013)   Artículo / Artikulua  OpenAccess
      In the last years, many topographic correction (TOC) methods have been proposed to correct the illumination differences between the areas observed by optical remote sensors. Although the available number of TOC methods is ...
    • Validation of a simplified model to generate multispectral synthetic images 

      Sola Torralba, Ion Upna; González Audicana, María Upna; Álvarez Mozos, Jesús Upna (MDPI, 2015)   Artículo / Artikulua  OpenAccess
      A new procedure to assess the quality of topographic correction (TOC) algorithms applied to remote sensing imagery was previously proposed by the authors. This procedure was based on a model that simulated synthetic scenes, ...