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Fluorescence molecular tomography (FMT) is an emerging powerful tool for biomedical research. There are two factors that influence FMT reconstruction most effectively. The first one is the regularization techniques. Traditional methods such…

图像与视频处理 · 电气工程与系统科学 2021-09-09 Yan Liu , Wuwei Ren , Habib Ammari

An emerging device architecture for infrared imaging is the curved focal-plane array which benefits from several optical advantages over the traditional flat design. However, the curving process introduces additional strain in the active…

介观与纳米尺度物理 · 物理学 2023-12-14 John Glennon , Alexandros Kyrtsos , Mark O'Masta , Binh-Minh Nyguyen , Enrico Bellotti

Light-in-flight (LIF) imaging is the measurement and reconstruction of light's path as it moves and interacts with objects. It is well known that relativistic effects can result in apparent velocities that differ significantly from the…

光学 · 物理学 2021-07-21 Imogen Morland , Feng Zhu , German Mora Martin , Istvan Gyongy , Jonathan Leach

Line intensity mapping (LIM) is a promising tool to efficiently probe the three-dimensional large-scale structure by mapping the aggregate emission of a spectral line from all sources that trace the matter density field. Spectral lines from…

宇宙学与河外天体物理 · 物理学 2020-10-09 Yun-Ting Cheng , Tzu-Ching Chang , James J. Bock

Quantum memory is an important component in the long-distance quantum communication system based on the quantum repeater protocol. To outperform the direct transmission of photons with quantum repeaters, it is crucial to develop quantum…

Energy efficiency (EE) is a challenging task in integrated sensing and communication (ISAC) systems, where high spectral efficiency and low energy consumption appear as conflicting requirements. Although passive reconfigurable intelligent…

信号处理 · 电气工程与系统科学 2024-09-23 Junjie Ye , Mohamed Rihan , Peichang Zhang , Lei Huang , Stefano Buzzi , Zhen Chen

Non-mydriatic retinal color fundus photography (CFP) is widely available due to the advantage of not requiring pupillary dilation, however, is prone to poor quality due to operators, systemic imperfections, or patient-related causes.…

图像与视频处理 · 电气工程与系统科学 2023-04-11 Wenhui Zhu , Peijie Qiu , Oana M. Dumitrascu , Jacob M. Sobczak , Mohammad Farazi , Zhangsihao Yang , Keshav Nandakumar , Yalin Wang

Quantitative phase imaging (QPI) is a label-free computational imaging technique that provides optical path length information of specimens. In modern implementations, the quantitative phase image of an object is reconstructed digitally…

光学 · 物理学 2022-05-23 Deniz Mengu , Aydogan Ozcan

We present the best 265 sampled R-band light curves of spectroscopically identified Type Ia supernovae (SNe) from the Palomar Transient Factory (PTF; 2009-2012) survey and the intermediate Palomar Transient Factory (iPTF; 2013-2017). A…

We solve the integral equation describing the propagation of light in an isothermal plane-parallel atmosphere of optical thickness $\tau^*$, adopting a uniform thermalization parameter $\epsilon$. The solution given by the ALI method,…

天体物理学 · 物理学 2007-05-23 L. Chevallier , F. Paletou , B. Rutily

Due to its specificity, fluorescence microscopy (FM) has become a quintessential imaging tool in cell biology. However, photobleaching, phototoxicity, and related artifacts continue to limit FM's utility. Recently, it has been shown that…

Solving combinatorial optimization problems (COPs) is a promising application of quantum computation, with the Quantum Approximate Optimization Algorithm (QAOA) being one of the most studied quantum algorithms for solving them. However,…

量子物理 · 物理学 2025-05-21 J. A. Montanez-Barrera , Dennis Willsch , Kristel Michielsen

A novel method for solving the linear radiative transport equation (RTE) in a three-dimensional homogeneous medium is proposed and illustrated with numerical examples. The method can be used with an arbitrary phase function A(s,s') with the…

数学物理 · 物理学 2007-05-23 George Panasyuk , John C. Schotland , Vadim A. Markel

We propose an ultrasound speckle filtering method for not only preserving various edge features but also filtering tissue-dependent complex speckle noises in ultrasound images. The key idea is to detect these various edges using a phase…

图像与视频处理 · 电气工程与系统科学 2021-02-11 Kunqiang Mei , Bin Hu , Baowei Fei , Binjie Qin

High-throughput computational imaging requires efficient processing algorithms to retrieve multi-dimensional and multi-scale information. In computational phase imaging, phase retrieval (PR) is required to reconstruct both amplitude and…

图像与视频处理 · 电气工程与系统科学 2021-09-15 Xuyang Chang , Liheng Bian , Jun Zhang

The iterative phase retrieval problem for complex-valued objects from Fourier transform magnitude data is known to suffer from the twin image problem. In particular, when the object support is centro-symmetric, the iterative solution often…

计算机视觉与模式识别 · 计算机科学 2015-10-28 Charu Gaur , Baranidharan Mohan , Kedar Khare

Coherent diffractive imaging (CDI) enables lensless imaging with experimental simplicity and a flexible field of view, yet its resolution is fundamentally constrained by the Abbe diffraction limit. To overcome this limitation, we introduce…

[Abridged] We investigate the use of a wide variety of spectroscopic measurements to determine distances to low-redshift Type Ia supernovae (SN Ia). We consider linear models for predicting distances to SN Ia using light-curve width and…

宇宙学与河外天体物理 · 物理学 2011-01-04 Stéphane Blondin , Kaisey S. Mandel , Robert P. Kirshner

We experimentally investigate transmitting high-order quadrature amplitude modulation (QAM) signals with carrierless and intensity-only measurements with phase retrieval (PR) receiving techniques. The intensity errors during measurement,…

信号处理 · 电气工程与系统科学 2024-08-08 Hanzi Huang , Haoshuo Chen , Qi Gao , Yetian Huang , Nicolas K. Fontaine , Mikael Mazur , Lauren Dallachiesa , Roland Ryf , Zhengxuan Li , Yingxiong Song

A simple, yet general, formalism for the optimized linear combination of astrophysical images is constructed and demonstrated. The formalism allows the user to combine multiple undersampled images to provide oversampled output at high…

天体物理仪器与方法 · 物理学 2015-05-28 Barnaby Rowe , Christopher Hirata , Jason Rhodes
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