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Terahertz (THz) imaging is one of the hotspots in the field of optics, where the depth information retrieval is a key factor to restore the three-dimensional appearance of objects. Impressive results for depth extraction in visible and…

光学 · 物理学 2024-07-09 Mingjun Xiang , Hui Yuan , Kai Zhou , Hartmut G. Roskos

Terahertz (THz) band has recently garnered significant attention due to its exceptional capabilities in non-invasive, non-destructive sensing, and imaging applications. However, current THz imaging systems encounter substantial challenges…

光学 · 物理学 2025-01-23 Shao-Hsuan Wu , Seyed Mostafa Latifi , Chia-Wen Lin , Shang-Hua Yang

In this paper, we propose a phase shift deep neural network (PhaseDNN), which provides a uniform wideband convergence in approximating high frequency functions and solutions of wave equations. The PhaseDNN makes use of the fact that common…

机器学习 · 计算机科学 2019-12-17 Wei Cai , Xiaoguang Li , Lizuo Liu

Accurately characterizing non-linear functional manifolds with singularities is a fundamental challenge in scientific computing. While Multi-Layer Perceptrons (MLPs) dominate, their spectral bias hinders resolving high-curvature features…

机器学习 · 计算机科学 2026-03-24 Chao Wang , Xuancheng Zhou , Ruilin Hou , Xiaoyu Cheng , Ruiyi Ding

The architecture of a neural network and the selection of its activation function are both fundamental to its performance. Equally vital is ensuring these two elements are well-matched, as their alignment is key to achieving effective…

机器学习 · 计算机科学 2025-06-25 Shijun Zhang , Hongkai Zhao , Yimin Zhong , Haomin Zhou

Extracting a target source from underdetermined mixtures is challenging for beamforming approaches. Recently proposed time-frequency-bin-wise switching (TFS) and linear combination (TFLC) strategies mitigate this by combining multiple…

音频与语音处理 · 电气工程与系统科学 2026-03-17 Changda Chen , Yichen Yang , Wei Liu , Shoji Makino

The recently proposed fully-connected tensor network (FCTN) decomposition has demonstrated significant advantages in correlation characterization and transpositional invariance, and has achieved notable achievements in multi-dimensional…

机器学习 · 计算机科学 2026-02-16 Wenjin Qin , Hailin Wang , Jiangjun Peng , Jianjun Wang , Tingwen Huang

Downward continuation is a critical task in potential field processing, including gravity and magnetic fields, which aims to transfer data from one observation surface to another that is closer to the source of the field. Its effectiveness…

地球物理 · 物理学 2025-02-11 Jing Sun , Lu Li , Liang Zhang

Tensor decomposition is a powerful tool for data analysis and has been extensively employed in the field of hyperspectral-multispectral image fusion (HMF). Existing tensor decomposition-based fusion methods typically rely on disruptive data…

计算机视觉与模式识别 · 计算机科学 2025-10-22 Linsong Shan , Zecan Yang , Laurence T. Yang , Changlong Li , Honglu Zhao , Xin Nie

The Helmholtz equation is fundamental to wave modeling in acoustics, electromagnetics, and seismic imaging, yet high-frequency regimes remain challenging due to the ``pollution effect''. We propose FD-MGDL, an adaptive framework integrating…

数值分析 · 数学 2026-02-25 Peiyao Zhao , Rui Wang , Tingting Wu , Yuesheng Xu

We present a method for extracting high-spatial resolution dielectric constant data at microwave frequencies. A scanning near field microwave microscope probes a sample and acquires data in the form of the frequency and quality factor…

材料科学 · 物理学 2009-09-22 Shuogang Huang , H. M. Christen , M. E. Reeves

Compound identification from tandem mass spectrometry (MS/MS) data is a critical step in the analysis of complex mixtures. Typical solutions for the MS/MS spectrum to compound (MS2C) problem involve comparing the unknown spectrum against a…

机器学习 · 计算机科学 2025-08-28 Adamo Young , Fei Wang , David S Wishart , Bo Wang , Russell Greiner , Hannes Röst

Change detection is the process of identifying pixelwise differences in bitemporal co-registered images. It is of great significance to Earth observations. Recently, with the emergence of deep learning (DL), the power and feasibility of…

计算机视觉与模式识别 · 计算机科学 2021-09-03 Pan Chen , Danfeng Hong , Zhengchao Chen , Xuan Yang , Baipeng Li , Bing Zhang

Power transformer plays a critical role in grid infrastructure, and its diagnosis is paramount for maintaining stable operation. However, the current methods for transformer diagnosis focus on discrete dissolved gas analysis, neglecting…

机器学习 · 计算机科学 2023-10-12 Wei Zheng , Guogang Zhang , Chenchen Zhao , Qianqian Zhu

Recovering the image of an object from its phaseless speckle pattern is difficult. Let alone the transmission matrix is unknown in multiple scattering media imaging. Double phase retrieval is a recently proposed efficient method which…

信号处理 · 电气工程与系统科学 2018-06-27 Ziyang Yuan , Hongxia Wang

Tailored light excitation and nonlinear control of lattice vibrations have emerged as powerful strategies to manipulate the properties of quantum materials out of equilibrium. Generalizing the use of coherent phonon-phonon interactions to…

A neural network is essentially a high-dimensional complex mapping model by adjusting network weights for feature fitting. However, the spectral bias in network training leads to unbearable training epochs for fitting the high-frequency…

信号处理 · 电气工程与系统科学 2021-06-22 Zhi Zeng , Pengpeng Shi , Fulei Ma , Peihan Qi

Histopathological image classification constitutes a pivotal task in computer-aided diagnostics. The precise identification and categorization of histopathological images are of paramount significance for early disease detection and…

计算机视觉与模式识别 · 计算机科学 2024-07-23 Weiping Ding , Tianyi Zhou , Jiashuang Huang , Shu Jiang , Tao Hou , Chin-Teng Lin

Recently, deep neural networks (DNNs) have become powerful tools for solving inverse scattering problems. However, the approximation and generalization rates of DNNs for solving these problems remain largely under-explored. In this work, we…

数值分析 · 数学 2025-02-03 Zehui Zhou

This paper introduces a hybrid computational framework for the multi-frequency inverse source problem governed by the Helmholtz equation. By integrating a classical Fourier method with a deep convolutional neural network, we address the…

偏微分方程分析 · 数学 2026-01-05 Hao Chen , Yan Chang , Yukun Guo , Yuliang Wang
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