Results 41 to 50 of about 1,618 (216)
Test of the Practicality and Feasibility of EDoF-Empowered Image Sensors for Long-Range Biometrics
Sensors, 2016 For many practical applications of image sensors, how to extend the depth-of-field (DoF) is an important research topic; if successfully implemented, it could be beneficial in various applications, from photography to biometrics. In this work, we want to
Sheng-Hsun Hsieh +2 more
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Reconfigurable intelligent surface with high optical-transparency based on metalmesh
Journal of Information and Intelligence, 2023 Reconfigurable intelligent surfaces (RISs) have aroused extensive attentions from academic and wireless communication communities due to their abilities to customize the electromagnetic (EM) characteristics of the propagation channels flexibly and ...
Jing Cheng Liang +3 more
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Introduction to Wavefront Coding for Incoherent Imaging [PDF]
EAS Publications Series, 2013 This book is a collection of 19 articles which reflect the courses given at the Collège de France/Summer school “Reconstruction d'images − Applications astrophysiques“ held in Nice and Fréjus, France, from June 18 to 22, 2012. The articles presented in this volume address emerging concepts and methods that are useful in the complex process of improving
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Terahertz wavefront engineering using a hard-coded metasurface
Optical and Quantum Electronics, 2023 During the past few years, coding metamaterials (MM) drew significant attention, where the far-field scattering/transmission pattern of the electromagnetic wave (particularly in the THz regime) can be encoded into a single or few-bit digitized phase-response of the metasurface, thereby enabling a full digital control.
Noori, Aileen +6 more
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Mathematics, 2022 The electromagnetic scattering of a meta-surface, formed by a honeycomb substrate or periodical arranged meta-materials, has great meanings to communication technologies.
Ting-Ting Gu, Tie-Jun Cui
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GLA-ResUNet: A global-local attention framework for decoding in wavefront coding imaging system [PDF]
AIP AdvancesWavefront coding technology disperses incident laser energy by employing a pupil-phase mask, effectively reducing the energy density on the detector target and enhancing the camera’s anti-laser capability.
Qing Ye +7 more
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Extended Depth-of-Field Imaging Using Multi-Scale Convolutional Neural Network Wavefront Coding
, 2023 Wavefront encoding (WFC) is a depth-of-field (DOF) extension technology that combines optical encoding and digital decoding. The system extends DOF at the expense of intermediate image quality and then decodes it through an image restoration algorithm to
Yijian Wu +3 more
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Advanced Materials, EarlyView.A deep learning inverse‐design framework is established to create versatile reconfigurable terahertz metadevices. By synergizing deep learning with phase‐change materials, this approach enables on‐demand customization of multidimensional electromagnetic responses.
Yisheng Dong +11 more
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Research Progress in Information Processing Methods for Computational Optical Systems
Shuju Caiji Yu ChuliAberration is a crucial factor that restricts the imaging performance of optical systems， leading to degraded imaging effects such as blurred details and reduced resolution.
SHAO Xiaopeng +6 more
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Decomposition of the optical transfer function: wavefront coding imaging systems
, 2005 We describe the mapping of the optical transfer function (OTF) of an incoherent imaging system into a geometrical representation. We show that for defocused traditional and wavefront-coded systems the OTF can be represented as a generalized Cornu spiral.
Muyo, Gonzalo +3 more
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