Listar por autoría "15d7b756-d863-452a-96c9-df99b9042164"

Mostrando ítems 1-20 de 22

    • openAccess   Depth and All-in-Focus Image Estimation in Synthetic Aperture Integral Imaging Under Partial Occlusions 

      Martínez Sotoca, José; Latorre Carmona, Pedro; Pla, Filiberto; Javidi, Bahram IEEE (2018-12)
      A common assumption in the integral imaging reconstruction is that a pixel will be photo-consistent if all viewpoints observed by the different cameras converge at a single point when focusing at the proper depth. However, ...

    • closedAccess   Depth estimation improvement in 3D integral imaging using an edge removal approach 

      Martínez Sotoca, José; Latorre Carmona, Pedro; Espinós-Morató, H.; Pla, Filiberto; Javidi, Bahram Springer (2018)
      A new depth estimation method for 3D reconstruction in a synthetic aperture integral imaging framework is presented. This method removes the edges of the objects in the elemental images when the objects are in focus. This ...

    • openAccess   Depth Estimation in Integral Imaging Based on a Maximum Voting Strategy 

      Martínez Usó, Adolfo; Latorre Carmona, Pedro; Martínez Sotoca, José; Pla, Filiberto; Javidi, Bahram Institute of Electrical and Electronics Engineers (IEEE) (2016-10)
      An approach that uses the scene information acquired by means of a three-dimensional (3D) synthetic aperture integral imaging system is presented. This method generates a depth map of the scene through a voting strategy. ...

    • openAccess   Enhanced field-of-view integral imaging display using multi-Köhler illumination 

      Tolosa, Ángel; Martinez Cuenca, Raul; Navarro, Héctor; Saavedra, Genaro; Martínez Corral, Manuel; Javidi, Bahram; Pons Martí, Amparo Optical Society of America (2014)
      A common drawback in 3D integral imaging displays is the appearance of pseudoimages beyond the viewing angle. These pseudoimages appear when the light rays coming from each elemental image are not passing through the ...

    • openAccess   Fundamentals of automated human gesture recognition using 3D integral imaging: a tutorial 

      Javidi, Bahram; Pla, Filiberto; Martínez Sotoca, José; Shen, Xin; Latorre Carmona, Pedro; Martínez Corral, Manuel; Fernandez-Beltran, Ruben; Krishnan, Gokul Optical Society of America (2020-12-31)
      Automated human gesture recognition is receiving significant research interest, with applications ranging from novel acquisition techniques to algorithms, data processing, and classification methodologies. This tutorial ...

    • openAccess   Human gesture recognition under degraded environments using 3D-integral imaging and deep learning 

      Krishnan, Gokul; Joshi, Rakesh; O’Connor, Timothy; Pla, Filiberto; Javidi, Bahram Optical Society of America (2020)
      In this paper, we propose a spatio-temporal human gesture recognition algorithm under degraded conditions using three-dimensional integral imaging and deep learning. The proposed algorithm leverages the advantages of ...

    • closedAccess   Human gesture recognition using three-dimensional integral imaging 

      Traver Roig, Vicente Javier; Latorre Carmona, Pedro; Salvador Balaguer, Eva; Pla, Filiberto; Javidi, Bahram Optical Society of America (2014)
      Three-dimensional (3D) integral imaging allows one to reconstruct a 3D scene, including range information, and provides sectional refocused imaging of 3D objects at different ranges. This paper explores the potential use ...

    • openAccess   Integral imaging acquisition and processing for visualization of photon counting images in the mid-wave infrared range 

      Latorre Carmona, Pedro; Pla, Filiberto; Javidi, Bahram Society of Photo-Optical Instrumentation Engineers (SPIE) (2016-06)
      In this paper, we present an overview of our previously published work on the application of the maximum likelihood (ML) reconstruction method to integral images acquired with a mid-wave infrared detector on two different ...

    • openAccess   Integral imaging techniques for flexible sensing through image-based reprojection 

      Martínez Sotoca, José; Latorre Carmona, Pedro; Pla, Filiberto; Shen, Xin; Komatsu, Satoru; Javidi, Bahram OSA Publishing (2017-10)
      In this work, a 3D reconstruction approach for flexible sensing inspired by integral imaging techniques is proposed. This method allows the application of different integral imaging techniques, such as generating a depth ...

    • openAccess   Multidimensional Optical Sensing and Imaging Systems (MOSIS): From Macro to Micro Scales 

      Javidi, Bahram; Shen, Xin; Markman, Adam; Latorre Carmona, Pedro; Martínez Usó, Adolfo; Martínez Sotoca, José; Pla, Filiberto; Martínez Corral, Manuel; Saavedra, Genaro; Huang, Yi-Pai; Stern, Adrián Institute of Electrical and Electronics Engineers (IEEE) (2017)
      Multidimensional optical imaging systems for information processing and visualization technologies have numerous applications in fields such as manufacturing, medical sciences, entertainment, robotics, surveillance, and ...

    • openAccess   Multispectral integral imaging acquisition and processing using a monochrome camera and a liquid crystal tunable filter 

      Latorre Carmona, Pedro; Sánchez Ortiga, Emilio; Xiao, Xiao; Pla, Filiberto; Martínez Corral, Manuel; Navarro, Héctor; Saavedra, Genaro; Javidi, Bahram Optical Society of America (2012)
      This paper presents an acquisition system and a procedure to capture 3D scenes in different spectral bands. The acquisition system is formed by a monochrome camera, and a Liquid Crystal Tunable Filter (LCTF) that allows ...

    • openAccess   Photon Counting 3-D Object Recognition Using Digital Holography 

      Latorre Carmona, Pedro; Javidi, Bahram; Pla, Filiberto; Tajahuerce, Enrique Institute of Electrical and Electronics Engineers (IEEE) (2013)
      We present an analysis of the recognition performance of 3-D objects reconstructed from digital holograms recorded under photon counting conditions. The digital holograms are computed by applying four-step phase-shifting ...

    • openAccess   Real Time Automated Counterfeit Integrated Circuit Detection using X-ray Microscopy 

      Mahmood, Kaleel; Latorre Carmona, Pedro; Shahbazmohamadi, Sina; Pla, Filiberto; Javidi, Bahram OSA Publishing (2015-05)
      Determining the authenticity of integrated circuits is paramount to preventing counterfeit and malicious hardware from being used in critical military, healthcare, aerospace, consumer, and industry applications. Existing ...

    • 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 ...

    • 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 ...

    • openAccess   Single-shot color digital holography based on the fractional Talbot effect 

      Araiza Esquivel, María A.; Martínez-León, Lluís; Javidi, Bahram; Andrés, Pedro; Lancis, Jesús; Tajahuerce, Enrique Optical Society of America (2011-02-28)
      We present a method for recording on-axis color digital holograms in a single shot. Our system performs parallel phase-shifting interferometry by using the fractional Talbot effect for every chromatic channel simultaneously. ...

    • openAccess   Single-shot digital holography
by use of the fractional Talbot effect 

      Martínez-León, Lluís; Araiza Esquivel, María A.; Javidi, Bahram; Andrés, Pedro; Climent, Vicent; Lancis, Jesús; Tajahuerce, Enrique Optical Society of America (2009)
      We present a method for recording in-line single-shot digital holograms based on the fractional Talbot effect. In our system, an image sensor records the interference between the light field scattered by the object and a ...

    • openAccess   Synthetic aperture single-exposure on-axis digital holography 

      Martínez-León, Lluís; Javidi, Bahram Optical Society of America (2008)
      We present a system for reconstructing single-exposure on-line (SEOL) digital holograms with improved resolution using a synthetic aperture. Several recordings are made in order to compose the synthetic aperture, shifting ...

    • openAccess   Three Dimensional Visualization of Long Range Scenes by Photon Counting Mid-Wave Infrared Integral Imaging 

      Latorre Carmona, Pedro; Javidi, Bahram; LeMaster, Daniel (2015-07-03)
      Integral Imaging under photon counting conditions has found different three-dimensional (3D) imaging applications, including 3D image reconstruction and recognition. In this letter, we present the application of the maximum ...