Listar INIT_Articles por título

Mostrando ítems 579-598 de 752

    • openAccess   Rice-yield prediction with multi-temporal sentinel-2 data and 3D CNN: A case study in Nepal 

      Fernandez-Beltran, Ruben; Baidar, Tina; kang, jian; Pla, Filiberto Multidisciplinary Digital Publishing Institute (2021-04-04)
      Crop yield estimation is a major issue of crop monitoring which remains particularly challenging in developing countries due to the problem of timely and adequate data availability. Whereas traditional agricultural systems ...

    • closedAccess   Risk factors and spatial distribution of urban rat infestations 

      Tamayo Uria, Ibon; Mateu, Jorge; Escobar, Francisco; Mughini Gras, Lapo Springer Verlag (2014-03)
      Urban rat infestations have multifactorial causes and may result in severe public health and environmental problems, as well as heavy economic losses. The identification of putative environmental determinants of urban rat ...

    • openAccess   Roadblocks Hindering the Reuse of Open Geodata in Colombia and Spain: A Data User’s Perspective 

      Benítez Páez, Fernando; Degbelo, Auriol; Trilles, Sergio; Huerta, Joaquin MDPI (2017-12)
      Open data initiatives are playing an important role in current city governments. Despite more data being made open, few studies have looked into barriers to open geographic data reuse from a data consumer’s perspective. ...

    • openAccess   Roadmap on 3D integral imaging: sensing, processing, and display 

      Javidi, Bahram; Carnicer, Artur; Arai, Jun; Fujii, Toshiaki; Hua, Hong; Liao, Hongen; Martinez-Corral, Manuel; Pla, Filiberto; Stern, Adrian; Waller, Laura; Wang, Qiong-Hua; Wetzstein, Gordon; Yamaguchi, Masahiro; Yamamoto, Hirotsugu Optical Society of America (2020)
      This Roadmap article on three-dimensional integral imaging provides an overview of some of the research activities in the field of integral imaging. The article discusses various aspects of the field including sensing ...

    • openAccess   Roadmap on digital holography 

      Javidi, Bahram; Carnicer, Artur; Anand, Arun; Barbastathis, George; CHEN, Wen; Ferraro, Pietro; Goodman, Joseph; Horisaki, Ryoichi; Khare, Kedar; Kujawińska, Małgorzata; Leitgeb, Rainer; Marquet, Pierre; Nomura, Takanori; Ozcan, Aydogan; Park, YongKeun; Pedrini, Giancarlo; PICART, Pascal; Rosen, Joseph; Saavedra Tortosa, Genaro; Shaked, Natan T.; Stern, Adrian; Tajahuerce, Enrique; Tian, Lei; Wetzstein, Gordon; Yamaguchi, Masahiro Optica Publishing Group (2021-10-12)
      This Roadmap article on digital holography provides an overview of a vast array of research activities in the field of digital holography. The paper consists of a series of 25 sections from the prominent experts in digital ...

    • openAccess   Roadmap on optical security: Optical encryption by computational ghost imaging 

      Tajahuerce, Enrique; Lancis, Jesús IOP Publishing (2016)
      Information security and authentication are important challenges facing society. Recent attacks by hackers on the databases of large commercial and financial companies have demonstrated that more research and development ...

    • openAccess   Robust Normalized Softmax Loss for Deep Metric Learning-Based Characterization of Remote Sensing Images With Label Noise 

      kang, jian; Fernandez-Beltran, Ruben; Duan, Puhong; Kang, Xudong; Plaza, Antonio Institute of Electrical and Electronics Engineers (2020-12-16)
      Most deep metric learning-based image characterization methods exploit supervised information to model the semantic relations among the remote sensing (RS) scenes. Nonetheless, the unprecedented availability of large-scale ...

    • openAccess   Robustness of conventional and topologically protected edge states in phononic crystal plates 

      Jin, Yabin; Torrent, Daniel; Djafari Rouhani, Bahram American Physical Society (2018)
      Many efforts have been devoted to studying the robustness of topologically protected edge states in acoustics; however, the robustness of conventional edge states is rarely reported. In this work we theoretically ...

    • openAccess   Rotation-Invariant Deep Embedding for Remote Sensing Images 

      kang, jian; Fernandez-Beltran, Ruben; Wang, Zhirui; Sun, Xian; Ni, Jingen; Plaza, Antonio Institute of Electrical and Electronics Engineers (2021-06-28)
      Endowing convolutional neural networks (CNNs) with the rotation-invariant capability is important for characterizing the semantic contents of remote sensing (RS) images since they do not have typical orientations. Most of ...

    • openAccess   Scalable and Efficient Clustering for Fingerprint-Based Positioning 

      Torres-Sospedra, Joaquín; Quezada Gaibor, Darwin; Nurmi, Jari; Koucheryavy, Yevgeni; Lohan, Elena Simona; Huerta, Joaquin IEEE (2023)
      Abstract: Indoor positioning based on IEEE 802.11 wireless LAN (Wi-Fi) fingerprinting needs a reference data set, also known as a radio map, in order to match the incoming fingerprint in the operational phase with the ...

    • openAccess   Second-harmonic illumination to enhance multispectral digital lensless holographic microscopy 

      Mendoza-Yero, Omel; Carbonell Leal, Miguel; Lancis, Jesús; García Sucerquia, Jorge Optical Society of America (2016-03)
      Multispectral digital lensless holographic microscopy (MDLHM) operating with second-harmonic illumination is shown. Added to the improvement of the spatial resolution of the previously reported MDLHM operating with ...

    • closedAccess   Second-order analysis of anisotropic spatiotemporal point process data 

      Comas Rodríguez, Carlos; Rodríguez-Cortés, Francisco Javier; Mateu, Jorge Wiley (2015-02)
      Second-order orientation methods provide a natural tool for the analysis of spatial point process data. In this paper, we extend to the spatiotemporal setting the spatial point pair orientation distribution function. The ...

    • openAccess   Second-order and local characteristics of network intensity functions 

      Eckardt, Matthias; Mateu, Jorge Springer (2021)
      The last decade has witnessed an increase of interest in the spatial analysis of structuredpoint patterns over networks whose analysis is challenging because of geometricalcomplexities and unique methodological problems. ...

    • closedAccess   Second-order smoothing of spatial point patterns with small sample sizes: a family of kernels 

      Rodríguez-Cortés, Francisco Javier; Mateu, Jorge Springer Verlag (2015-01)
      We consider kernel-based non-parametric estimation of second-order product densities of spatial point patterns. We present a new family of optimal and positive kernels that shows less variance and more flexibility than ...

    • closedAccess   Security and Reliability of Room Occupancy Detection Using Probe Requests in Smart Buildings 

      Fryza, Tomas; Bravenec, Tomáš; Kohl, Zdenek IEEE (2023-04-19)
      We present new approaches for determining occupancy in smart building management systems. The solutions can be applied dually, in civil and military areas, not only for economic management but also in crisis situations ...

    • closedAccess   Security authentication using phase-encoded nanoparticle structures and polarized light 

      Carnicer, Artur; Hassanfiroozi, Amir; Latorre Carmona, Pedro; Huang, Yi-Pai; Javidi, Bahram Optical Society of America (2015)
      Phase-encoded nanostructures such as quick response (QR) codes made of metallic nanoparticles are suggested to be used in security and authentication applications. We present a polarimetric optical method able to authenticate ...

    • closedAccess   Self-exciting point process modelling of crimes on linear networks 

      D'ANGELO, Nicoletta; Payares García, David Enrique; adelfio, giada; Mateu, Jorge SAGE Publications (2022)
      Although there are recent developments for the analysis of first and second-order characteristics of point processes on networks, there are very few attempts in introducing models for network data. Motivated by the analysis ...

    • closedAccess   Self-referenced phase reconstruction proposal of Ghz bandwidth non-periodical optical pulses by in-fiber semi-differintegration 

      Cuadrado Laborde, Christian; Andrés, Miguel V.; Lancis, Jesús Elsevier (2011)
      We propose two new techniques able to retrieve the phase profile of a given temporal optical pulse based on the use of in-fiber semi-differintegral operators, where by semi-differintegration we mean either a 0.5th-order ...

    • closedAccess   Self-similar behavior in semiconductor superlattices 

      Castro-Palacio, Juan Carlos; Villatoro, Francisco R.; Mendoza-Yero, Omel; Velázquez Abad, Luisberis; Monsoriu, Juan A. World Scientific Publishing Company (2012)
      The scattering of particles in fractal superlattices has been analyzed by means of the transfer matrix method. The fractal superlattice consists of alternating layers of semiconductor materials following the rule of a ...

    • openAccess   Self-similar focusing with generalized devil’s lenses 

      Casanova, Cristina; Burlan, Walter D.; Remón, Laura; Calatayud, Arnau; Monsoriu, Juan A.; Mendoza-Yero, Omel Optical Society of America (2011)
      We introduce the generalized devil’s lenses (GDLs) as a new family of diffractive kinoform lenses whose structure is based on the generalized Cantor set. The focusing properties of different members of this family are ...