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Particle image velocimetry (PIV) is essential in experimental fluid dynamics. In the current work, we propose a new velocity field estimation paradigm, which achieves a synergetic combination of the deep learning method and the traditional…

流体动力学 · 物理学 2022-01-12 Qi Gao , Hongtao Lin , Han Tu , Haoran Zhu , Runjie Wei , Guoping Zhang , Xueming Shao

The exploration of extragalactic objects with long-baseline interferometers in the near-infrared has been very limited. Here we report successful observations with the Keck interferometer at K-band (2.2 um) for four Type 1 AGNs, namely…

This paper proposes a novel method for tamper detection and recovery using semi-fragile data hiding, based on Lifting Wavelet Transform (LWT) and Feed-Forward Neural Network (FNN). In TRLF, first, the host image is decomposed up to one…

密码学与安全 · 计算机科学 2018-02-21 Behrouz Bolourian Haghighi , Amir Hossein Taherinia , Reza Monsefi

Anomaly detection aims at identifying images that deviate significantly from the norm. We focus on algorithms that embed the normal training examples in space and when given a test image, detect anomalies based on the features distance to…

计算机视觉与模式识别 · 计算机科学 2023-05-30 Ori Nizan , Ayellet Tal

Ground-based long baseline interferometers have long been limited in sensitivity by the short integration periods imposed by atmospheric turbulence. The first observation fainter than this limit was performed on January 22, 2011 when the…

Understanding exoplanet formation and finding potentially habitable exoplanets is vital to an enhanced understanding of the universe. The use of nulling interferometry to strongly attenuate the central starlight provides the opportunity to…

天体物理仪器与方法 · 物理学 2017-02-09 Harry-Dean Kenchington Goldsmith , Nick Cvetojevic , Michael Ireland , Stephen Madden

Open-set image recognition is a challenging topic in computer vision. Most of the existing works in literature focus on learning more discriminative features from the input images, however, they are usually insensitive to the high- or…

计算机视觉与模式识别 · 计算机科学 2025-05-20 Qiulei Dong , Jiayin Sun , Mengyu Gao

The Naval Research Laboratory and the National Radio Astronomy Observatory completed implementation of a low frequency capability on the VLA at 73.8 MHz in 1998. This frequency band offers unprecedented sensitivity (~25 mJy/beam) and…

Time-frequency analysis is an important and challenging task in many applications. Fourier and wavelet analysis are two classic methods that have achieved remarkable success in many fields. However, they also exhibit limitations when…

机器学习 · 计算机科学 2024-10-25 Feng Zhou , Antonio Cicone , Haomin Zhou

Fourier Ptychographic Microscopy (FPM) is a recent technique to overcome the diffraction limit of a low numerical aperture (NA) objective lens by algorithmic post-processing of several lower resolved images. It can increase the…

It is of great significance to identify the nonhomogeneous distribution of material properties in human tissues for different clinical and medical applications. This leads to the requirement of solving an inverse problem in elasticity. The…

医学物理 · 物理学 2022-11-04 Jianwei Deng , Xu Guo , Yue Mei , Stephane Avril

Automatically determining the number of intrinsic mode functions (IMFs) and their center frequencies in Variational Mode Decomposition (VMD) remains an open mathematical challenge. Existing methods rely on heuristic settings,…

数学物理 · 物理学 2026-05-04 Chenjie Zhong , Zhipeng Li , Shangzhi Xu , Xiaohu Li , Luodan Zhang , Jianjun Yuan

We present a new imaging technique, swept-angle synthetic wavelength interferometry, for full-field micron-scale 3D sensing. As in conventional synthetic wavelength interferometry, our technique uses light consisting of two…

计算机视觉与模式识别 · 计算机科学 2023-03-31 Alankar Kotwal , Anat Levin , Ioannis Gkioulekas

We propose a new method for optomechanical quantum non-demolition (QND) detection of phonon number, based on a "shelving" style measurement. The scheme uses a two-mode optomechanical system where the frequency splitting of the two photonic…

量子物理 · 物理学 2017-03-13 Yariv Yanay , Aashish A. Clerk

Fault detection for Deep Neural Networks (DNNs) has received increasing attention in recent years. While more advanced hybrid approaches have been proposed to combine multiple sources of information and outperform earlier techniques, they…

机器学习 · 计算机科学 2026-05-26 Amin Abbasishahkoo , Mahboubeh Dadkhah , Lionel Briand

Quantum metrology promises phase sensitivity surpassing the shot-noise limit by exploiting entanglement and photon-number correlations. NOON states-maximally path-entangled $N$-photon superpositions $(|N,0\rangle + |0,N\rangle)/\sqrt{2}$…

量子物理 · 物理学 2026-05-19 Simanshu Kumar , Nandan S Bisht

Vertical Federated Learning (VFL) is a category of Federated Learning in which models are trained collaboratively among parties with vertically partitioned data. Typically, in a VFL scenario, the labels of the samples are kept private from…

机器学习 · 计算机科学 2025-01-27 Marco Arazzi , Serena Nicolazzo , Antonino Nocera

The vector vortex coronagraph (VVC) performance in the laboratory and in ground-based observatories has earned it a spot on the NASA mission concepts HabEx and LUVOIR. The VVC induces a phase ramp through the manipulation of the…

天体物理仪器与方法 · 物理学 2021-08-18 Jorge Llop-Sayson , Cole Kappel , Nemanja Jovanovic , Dimitri Mawet

To achieve robust and accurate state estimation for robot navigation, we propose a novel Visual Inertial Odometry(VIO) algorithm with line features upon the theory of invariant Kalman filtering and Cubature Kalman Filter (CKF). In contrast…

机器人学 · 计算机科学 2019-12-30 Deli Yan , Chunhui Wu , Weiming Wang , Yu Song , Shaohua Li

On megaparsec scales the Universe is permeated by an intricate filigree of clusters, filaments, sheets and voids, the Cosmic Web. For the understanding of its dynamical and hierarchical history it is crucial to identify objectively its…

天体物理学 · 物理学 2010-01-07 Erwin Platen , Rien van de Weygaert , Bernard J. T. Jones