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    • openAccess   Three-dimensional imaging with multiple degrees of freedom using data fusion 

      Latorre Carmona, Pedro; Pla, Filiberto; Stern, Adrián; Moon, Inkyu; Javidi, Bahram Institute of Electrical and Electronics Engineers (2015)
      This paper presents an overview of research work and some novel strategies and results on using data fusion in 3-D imaging when using multiple information sources. We examine a variety of approaches and applications ...

    • openAccess   Three-Dimensional Integral Imaging for Gesture Recognition Under Occlusions 

      Traver Roig, Vicente Javier; Latorre Carmona, Pedro; Salvador Balaguer, Eva; Pla, Filiberto; Javidi, Bahram Institute of Electrical and Electronics Engineers (IEEE) (2017-02)
      Over the last years, three-dimensional (3-D) imaging has been applied to human action and gesture recognition, usually in the form of depth maps from RGB-D sensors. An alternative which has not been explored is 3-D integral ...

    • closedAccess   Three-dimensional trees for virtual globes 

      Rebollo Santamaría, Cristina; Remolar, Inmaculada; Gumbau Portalés, Jesús; Chover, Miguel Taylor & Francis (2014)
      One of the problems in virtual globes technologies is the real-time representation of vegetal species. In forest or garden representations, the low detailed plants produce a lack of realism. Efficient techniques are required ...

    • openAccess   Time Expansion in Distributed Optical Fiber Sensing 

      Fernández Ruiz, María del Rosario; Soriano-Amat, Miguel; Durán, Vicente; Martins, Hugo; Martin-Lopez, Sonia; Gonzalez-Herraez, Miguel Institute of Electrical and Electronics Engineers (2023-05-01)
      Distributed optical fiber sensing (DOFS) technology has recently experienced an impressive growth in various fields including security, structural monitoring and seismology, among others. This expansion has been accompanied ...

    • openAccess   Time-expanded phase-sensitive optical time-domain reflectometry 

      Soriano-Amat, Miguel; Martins, Hugo; Durán, Vicente; Costa, Luís; Martin-Lopez, Sonia; Gonzalez-Herraez, Miguel; Fernández Ruiz, María del Rosario Light: Science & Applications (2021-03-09)
      Phase-sensitive optical time-domain reflectometry (ΦOTDR) is a well-established technique that provides spatio-temporal measurements of an environmental variable in real time. This unique capability is being leveraged in ...

    • openAccess   Time-expanded φOTDR using low-frequency electronics 

      Soriano-Amat, Miguel; Martins, Hugo; Martin-Lopez, Sonia; Gonzalez-Herraez, Miguel; Fernández Ruiz, María del Rosario; Durán, Vicente Optica Publishing Group (2023-01)
      Time expanded phase-sensitive optical time-domain reflectometry (TE-φOTDR) is a recently reported technique for distributed optical fiber sensing based on the interference of two mutually coherent optical frequency combs. ...

    • openAccess   Time-Resolved Sentinel-3 Vegetation Indices Via Inter-Sensor 3-D Convolutional Regression Networks 

      Fernandez-Beltran, Ruben; Ibáñez Fernández, Damián; kang, jian; Pla, Filiberto Institute of Electrical and Electronics Engineers (2021-09-03)
      Sentinel missions provide widespread opportunities of exploiting inter-sensor synergies to improve the operational monitoring of terrestrial photosynthetic activity and canopy structural variations using vegetation indices ...

    • openAccess   Topological States in Twisted Pillared Phononic Plates 

      Jin, Yabin; Wang, Wan; Wen, Zhihui; Torrent, Daniel; Djafari Rouhani, Bahram Elsevier (2020-09-20)
      In recent years, the advances in topological insulator in the fields of condensed matter have been extended to classical wave systems such as acoustic and elastic waves. However, the quantitative robustness study of ...

    • openAccess   Topological vortex mode for flexural waves in pillared plates 

      Wen, Zhihui; Iglesias Martínez, Julio Andrés; Jin, Yabin; Li, Yan; Djafari Rouhani, Bahram; Torrent, Daniel; Raynaud, Jean-louis; Khelif, Abdelkrim Elsevier (2023)
      Localized topological modes with high robustness to various perturbations are receiving increasing attention. Recently, zero-order topological vortex modes have been designed in phononic structures, in analogy with ...

    • openAccess   Toward Expanding the Optical Response of Ag2CrO4 and Bi2O3 by Their Laser-Mediated Heterojunction 

      Torres-Mendieta, Rafael; Teixeira, Mayara Mondego; Mínguez-Vega, Gladys; de Souza, Daniele; Galvão Gobato, Yara; Assis, Marcelo de; Beltrán Mir, Héctor; Cordoncillo, Eloisa; Andres, Juan; Cernik, Miroslav; Longo, Elson American Chemical Society (2020-11-18)
      The formation of heterojunctions between semiconductors with distinct properties usually expands their capabilities. In this context, many methodologies have been employed in pursuing efficient and fruitful heterojunctions. ...

    • openAccess   Towards the scale-up of the formation of nanoparticles on α -Ag 2 WO 4 with bactericidal properties by femtosecond laser irradiation 

      Assis, Marcelo de; Cordoncillo, Eloisa; Torres-Mendieta, Rafael; Beltrán Mir, Héctor; Mínguez-Vega, Gladys; Oliveira, Regiane; Leite, Edson R.; Foggi, Camila Cristina; Vergani, Carlos; Longo, Elson; Andres, Juan Nature Publishing Group (2018)
      In recent years, complex nanocomposites formed by Ag nanoparticles coupled to an α-Ag2WO4 semiconductor network have emerged as promising bactericides, where the semiconductor attracts bacterial agents and Ag nanoparticles ...

    • openAccess   TrackInFactory: A Tight Coupling Particle Filter for Industrial Vehicle Tracking in Indoor Environments 

      Silva, Ivo; Pendão, Cristiano; Torres-Sospedra, Joaquín; Moreira, A Institute of Electrical and Electronics Engineers (2021-07-06)
      Localization and tracking of industrial vehicles have a key role in increasing productivity and improving the logistics processes of factories. Due to the demanding requirements of industrial vehicle tracking and navigation, ...

    • openAccess   Training Engineers in the Use of Constraints to Create Quality 2D Pro les for 3D Models 

      Plumed, Raquel; González-Lluch, Carmen; Otey, Jeffrey; Pérez-Belis, Victoria CAD Solutions (2021)
      Historically, different strategies utilized in engineering and technical graphics reflect growing concern about improvement in CAD instruction and the introduction of product quality data in curricular activities. Our ...

    • closedAccess   Trivariate non‐Gaussian copulas to analyze the spatial behavior of rat sightings 

      Ayyad, Carlos; Mateu, Jorge; Omidi, Mohammad; Tamayo Uria, Ibon; Mohammadzadeh, Mohsen Wiley (2018)
      The brown rat lives with man in a wide variety of environmental contexts and adversely affects public health by transmission of diseases, bites, and allergies. Understanding behavioral and spatial correlation aspects of ...

    • openAccess   Tsallis entropy for geometry simplification 

      Castelló Boscá, Pascual; González, Carlos; Sbert Casasayas, Mateu; Feixas, Miguel; Chover, Miguel MDPI Publishing (2011-09-29)
      This paper presents a study and a comparison of the use of different information-theoretic measures for polygonal mesh simplification. Generalized measures from Information Theory such as Havrda–Charva ́t–Tsallis entropy ...

    • openAccess   TUJI1 Dataset: Multi-device dataset for indoor localization with high measurement density 

      Klus, Lucie; Klus, Roman; Lohan, Elena Simona; Nurmi, Jari; Granell, Carlos; Valkama, Mikko; Talvitie, Jukka; Casteleyn, Sven; Torres-Sospedra, Joaquín Elsevier (2024-03-22)
      Positioning in indoor scenarios using signals of opportunity is an effective solution enabling accurate and reliable performance in Global Navigation Satellite System (GNSS)-obscured scenarios. Despite the availability of ...

    • openAccess   Tunable telephoto: governable Fourier spectrum anamorphic scaling 

      Gomez-Sarabia, Cristina Margarita; Tajahuerce, Enrique; Ojeda-Castaneda, Jorge (2021-02-18)
      We discuss the Gaussian design of a device that controls the scale, in an anamorphic fashion, of Fraunhofer diffraction patterns. The device uses two pairs of varifocal cylindrical lenses. For spherical lenses, the optical ...

    • closedAccess   Two-level classifier ensembles for credit risk assessment 

      Marqués Marzal, Ana Isabel; García, Vicente; Sánchez Garreta, Josep Salvador Elsevier (2012)
      Many techniques have been proposed for credit risk assessment, from statistical models to artificial intelligence methods. During the last few years, different approaches to classifier ensembles have successfully been ...

    • openAccess   Two-stage procedure based on smoothed ensembles of neural networks applied to weed detection in orange groves 

      Torres-Sospedra, Joaquín; Nebot Roglá, Patricio Elsevier (2014-07)
      The potential impacts of herbicide utilization compel producers to use new methods of weed control. The problem of how to reduce the amount of herbicide and yet maintain crop production has stimulated many researchers to ...

    • openAccess   Two-way layout factorial experiments of spatial point pattern responses in mineral flotation 

      González, Jonatan A.; Lagos Álvarez, Bernardo M.; Mateu, Jorge Springer (2021-03-25)
      Factorial experiments are well-understood when the given observations are outcomes of random variables. However, when we observe spatial point patterns in each combination of factors cells, the methodology is much less ...