Results 1 to 10 of about 10,092,068 (254)
Light-Field Microscopy with a Consumer Light-Field Camera [PDF]
2015 International Conference on 3D Vision, 2015 We explore the use of inexpensive consumer light- field camera technology for the purpose of light-field mi- croscopy. Our experiments are based on the Lytro (first gen- eration) camera. Unfortunately, the optical systems of the Lytro and those of microscopes are not compatible, lead- ing to a loss of light-field information due to angular and spatial ...
Mignard-Debise, Lois, Ihrke, Ivo
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Subdiffraction Focusing Metalens Based on the Depletion of Bessel Beams
IEEE Photonics Journal, 2022 Superresolution microscopy is of great interests in modern optics and photonics applications. Subdiffraction focusing lens, that has superresolution focal spot with local spatial frequency greater than the maximum Fourier component, has attracted ...
Yu Li, Xinhao Fan, Peng Li, Jianlin Zhao
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Quasi light fields: extending the light field to coherent radiation [PDF]
Journal of the Optical Society of America A, 2009 Imaging technologies such as dynamic viewpoint generation are engineered for incoherent radiation using the traditional light field, and for coherent radiation using electromagnetic field theory. We present a model of coherent image formation that strikes a balance between the utility of the light field and the comprehensive predictive power of Maxwell'
Accardi, Anthony J., Wornell, Gregory W.
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Unstructured Light Fields [PDF]
Computer Graphics Forum, 2012 AbstractWe present a system for interactively acquiring and rendering light fields using a hand‐held commodity camera. The main challenge we address is assisting a user in achieving good coverage of the 4D domain despite the challenges of hand‐held acquisition. We define coverage by bounding reprojection error between viewpoints, which accounts for all
Abe Davis, Marc Levoy, Frédo Durand
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Proceedings of the British Machine Vision Conference 2014, 2014 A full view spherical camera exploits its extended field of view to map the complete environment onto a 2D image plane. Thus, with a single shot, it delivers a lot more information about the surroundings than one can gather with a normal perspective or plenoptic camera, which are commonly used in light field imaging.
Bernd Krolla +3 more
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Actively modulated propagation of electromagnetic wave in hybrid metasurfaces containing graphene
EPJ Applied Metamaterials, 2020 Here we present the actively modulated transportation of electromagnetic wave through hybrid metasurfaces containing graphene. The hybrid metasurfaces are composed of patterned metallic layers of extraordinary transmission and backed with graphene ...
Nan Jiameng +5 more
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Tight Focusing of Circular Partially Coherent Radially Polarized Circular Airy Vortex Beam
Photonics, 2023 The tight focusing properties of circular partially coherent radially polarized circular Airy vortex beams (CPCRPCAVBs) are theoretically studied in this paper.
Zhihao Wan +10 more
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A Vignetting Model for Light Field Cameras With an Application to Light Field Microscopy [PDF]
IEEE Transactions on Computational Imaging, 2019 In standard photography, vignetting is considered mainly as a radiometric effect because it results in a darkening of the edges of the captured image. In this paper, we demonstrate that for light field cameras, vignetting is more than just a radio-metric effect.
Lois Mignard-Debise, Ivo Ihrke
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Advanced Electronic Materials, 2023 A metasurface is a kind of ultrathin artificial composite composed of subwavelength elements with unique abilities in manipulating electromagnetic waves.
Jiameng Nan +8 more
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Tying Knots in Light Fields [PDF]
Physical Review Letters, 2013 We construct a new family of null solutions to Maxwell's equations in free space whose field lines encode all torus knots and links. The evolution of these null fields, analogous to a compressible flow along the Poynting vector that is both geodesic and shear-free, preserves the topology of the knots and links.
Kedia, Hridesh +3 more
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