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Acousto-optic tomography (AOT) enables optical-contrast imaging deep inside scattering samples via localized ultrasound modulation of scattered light. However, the resolution of AOT is inherently limited by the ultrasound focus size,…

光学 · 物理学 2018-12-12 Daniel Doktofsky , Moriya Rosenfeld , Ori Katz

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

In this paper, a novel deep learning framework is proposed for temporal super-resolution simulation of blood vessel flows, in which a high-temporal-resolution time-varying blood vessel flow simulation is generated from a…

图像与视频处理 · 电气工程与系统科学 2021-11-23 Zhizheng Jiang , Fei Gao , Renshu Gu , Jinlan Xu , Gang Xu , Timon Rabczuk

We studied time-dependent features of high-frequency fluorescent radiation from a two-level quantum system with broken inversion spatial symmetry. The system in question was modelled after a one-electron two-level asymmetric polar…

量子物理 · 物理学 2024-12-17 Andrey V. Soldatov

A discrete-time end-to-end fiber-optical channel model is derived based on the first-order perturbation approach. The model relates the discrete-time input symbol sequences of co-propagating wavelength channels to the received symbol…

信号处理 · 电气工程与系统科学 2020-03-18 Felix Frey , Johannes K. Fischer , Robert F. H. Fischer

In this two-part paper, we present a novel framework and methodology to analyze data from certain image-based biochemical assays, e.g., ELISPOT and Fluorospot assays. In this first part, we start by presenting a physical partial…

信号处理 · 电气工程与系统科学 2018-10-19 Pol del Aguila Pla , Joakim Jaldén

Multi-Object Tracking (MOT) is one of the most fundamental computer vision tasks that contributes to various video analysis applications. Despite the recent promising progress, current MOT research is still limited to a fixed sampling frame…

计算机视觉与模式识别 · 计算机科学 2023-11-22 Weitao Feng , Lei Bai , Yongqiang Yao , Fengwei Yu , Wanli Ouyang

A directed odd cycle transversal of a directed graph (digraph) $D$ is a vertex set $S$ that intersects every odd directed cycle of $D$. In the Directed Odd Cycle Transversal (DOCT) problem, the input consists of a digraph $D$ and an integer…

数据结构与算法 · 计算机科学 2017-04-17 Daniel Lokshtanov , M. S. Ramanujan , Saket Saurabh , Meirav Zehavi

Four-dimensional computed tomography (4DCT) has been widely used in cancer radiotherapy for accurate target delineation and motion measurement for tumors in thorax and upper abdomen areas. However, 4DCT simulation is associated with much…

医学物理 · 物理学 2015-05-19 Zhen Tian , Xun Jia , Steve B. Jiang

We perform a parametric study of the newly developed time-of-flight (TOF) image reconstruction algorithm, proposed for the real-time imaging in total-body Jagiellonian PET (J-PET) scanners. The asymmetric 3D filtering kernel is applied at…

Recently, text-to-image generation with diffusion models has made significant advancements in both higher fidelity and generalization capabilities compared to previous baselines. However, generating holistic multi-view consistent images…

计算机视觉与模式识别 · 计算机科学 2024-12-06 Justin Theiss , Norman Müller , Daeil Kim , Aayush Prakash

Eye movements are commonly seen as an obstacle to high-resolution ophthalmic imaging. In this context we study the natural axial movements of the in vivo human eye and show that they can be used to modulate the optical phase and retrieve…

Generative models, particularly Diffusion Models (DM), have shown strong potential for Computed Tomography (CT) reconstruction serving as expressive priors for solving ill-posed inverse problems. However, diffusion-based reconstruction…

图像与视频处理 · 电气工程与系统科学 2026-03-03 Jiayang Shi , Lincen Yang , Zhong Li , Tristan Van Leeuwen , Daniel M. Pelt , K. Joost Batenburg

Nonuniform Fourier data are routinely collected in applications such as magnetic resonance imaging, synthetic aperture radar, and synthetic imaging in radio astronomy. To acquire a fast reconstruction that does not require an online inverse…

数值分析 · 数学 2016-10-05 Anne Gelb , Guohui Song

Nonlinear systems of affine control inputs overarch many sensor fusion instances. Analyzing whether a state variable in such a nonlinear system can be estimated (i.e., observability) informs better estimator design. Among the research on…

系统与控制 · 电气工程与系统科学 2022-07-19 Jianzhu Huai , Yukai Lin , Yujia Zhang

Indirect Time-of-Flight (iToF) cameras are a widespread type of 3D sensor, which perform multiple captures to obtain depth values of the captured scene. While recent approaches to correct iToF depths achieve high performance when removing…

计算机视觉与模式识别 · 计算机科学 2022-10-20 Michael Schelling , Pedro Hermosilla , Timo Ropinski

Full-field optical coherence tomography (FF-OCT) offers label-free, high-resolution imaging of biological samples but remains limited by slow acquisition due to piezoelectric mirror modulation. We present a continuous-scanning FF-OCT method…

光学 · 物理学 2025-09-11 Charlie Kersuzan , Anirban Jana , Amaury Badon

Understanding the time evolution of physical systems is crucial to revealing fundamental characteristics that are hidden in frequency domain. In optical science, high-quality resonance cavities and enhanced interactions with matters are at…

光学 · 物理学 2021-09-22 Yingheng Tang , Jichao Fan , Xinwei Li , Jianzhu Ma , Minghao Qi , Cunxi Yu , Weilu Gao

Feature Transformation (FT) crafts new features from original ones via mathematical operations to enhance dataset expressiveness for downstream models. However, existing FT methods exhibit critical limitations: discrete search struggles…

机器学习 · 计算机科学 2025-05-22 Nanxu Gong , Zijun Li , Sixun Dong , Haoyue Bai , Wangyang Ying , Xinyuan Wang , Yanjie Fu

Dynamic imaging through time-varying scattering media is ubiquitous in real-world settings, yet it remains a defining unsolved problem as rapid spatiotemporal fluctuations overwhelm standard reconstruction pipelines that often rely on…

光学 · 物理学 2025-11-25 Yunong Sun , Fei Xia
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