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Terahertz time-domain spectroscopy (THz-TDS) employs sub-picosecond pulses to probe dielectric properties of materials giving as a result a 3-dimensional hyperspectral data cube. The spatial resolution of THz images is primarily limited by…

A popular approach to sample a diffusion-based generative model is to solve an ordinary differential equation (ODE). In existing samplers, the coefficients of the ODE solvers are pre-determined by the ODE formulation, the reverse discrete…

机器学习 · 计算机科学 2023-10-04 Guoqiang Zhang , Niwa Kenta , W. Bastiaan Kleijn

We provide a detailed description of the Herschel-SPIRE Fourier Transform Spectrometer (FTS) Spectral Feature Finder (FF). The FF is an automated process designed to extract significant spectral features from SPIRE FTS data products.…

Controllable Depth-of-Field (DoF) imaging commonly produces amazing visual effects based on heavy and expensive high-end lenses. However, confronted with the increasing demand for mobile scenarios, it is desirable to achieve a lightweight…

计算机视觉与模式识别 · 计算机科学 2025-02-12 Xiaolong Qian , Qi Jiang , Yao Gao , Shaohua Gao , Zhonghua Yi , Lei Sun , Kai Wei , Haifeng Li , Kailun Yang , Kaiwei Wang , Jian Bai

Integral field spectroscopy allows for spectral mapping of extended sources in a time efficient manner. An integral field unit (IFU) in the ultraviolet on Habitable Worlds Observatory (HWO) could be used to quickly map extended objects like…

We present a fully automated framework for extracting interatomic force constants (IFCs) directly from X-ray thermal diffuse scattering (TDS) data. By formulating scattering intensity as a differentiable function of a symmetry-reduced IFC…

计算物理 · 物理学 2026-03-31 Klara Suchan , Shaswat Mohanty , Hanfeng Zhai , Wei Cai

Slitless spectrometers can provide simultaneous imaging and spectral data over an extended field of view, thereby allowing rapid data acquisition for extended sources. In some instances, when the object is greatly extended or the spectral…

Traditional 3D shape reconstruction techniques from multi-view images, such as structure from motion and multi-view stereo, face challenges in reconstructing transparent objects. Recent advances in neural radiance fields and its variants…

计算机视觉与模式识别 · 计算机科学 2025-01-22 Haoran Zhang , Junkai Deng , Xuhui Chen , Fei Hou , Wencheng Wang , Hong Qin , Chen Qian , Ying He

3D Gaussian Splatting (3DGS) techniques have recently enabled high-quality 3D scene reconstruction and real-time novel view synthesis. These approaches, however, are limited by the pinhole camera model and lack effective modeling of defocus…

计算机视觉与模式识别 · 计算机科学 2025-06-10 Yujie Wang , Praneeth Chakravarthula , Baoquan Chen

Remote Sensing Image Super-Resolution (RSISR) reconstructs high-resolution (HR) remote sensing images from low-resolution inputs to support fine-grained ground object interpretation. Existing methods face three key challenges: (1)…

计算机视觉与模式识别 · 计算机科学 2025-04-18 Yide Liu , Haijiang Sun , Xiaowen Zhang , Qiaoyuan Liu , Zhouchang Chen , Chongzhuo Xiao

Flow-based generative models have greatly improved text-to-speech (TTS) synthesis quality, but inference speed remains limited by the iterative sampling process and multiple function evaluations (NFE). The recent MeanFlow model accelerates…

声音 · 计算机科学 2025-10-10 Wei Wang , Rong Cao , Yi Guo , Zhengyang Chen , Kuan Chen , Yuanyuan Huo

Over the last years, the SWATH data-independent acquisition protocol (Sequential Window acquisition of All THeoretical mass spectra) has become a cornerstone for the worldwide proteomics community. In this approach, a high-resolution…

This paper describes several improvements to a new method for signal decomposition that we recently formulated under the name of Differentiable Dictionary Search (DDS). The fundamental idea of DDS is to exploit a class of powerful deep…

音频与语音处理 · 电气工程与系统科学 2022-11-29 Lukáš Samuel Marták , Rainer Kelz , Gerhard Widmer

Modern methods of environmental monitoring are deficient in the lack of ability to take measurements of energy flows since traditional readings involve capturing parameters such as temperature, pressure, and humidity without considering…

系统与控制 · 电气工程与系统科学 2026-04-20 Neksha DeSilva

An adaptive algorithm for spectral proper orthogonal decomposition (SPOD) of mixed broadband-tonal turbulent flows is developed. Sharp peak resolution at tonal frequencies is achieved by locally minimizing the bias of the spectrum. Smooth…

流体动力学 · 物理学 2024-06-25 Brandon C. Y. Yeung , Oliver T. Schmidt

The fields of view of Extremely Large Telescopes will contain vast numbers of spatial sampling elements (spaxels) as their Adaptive Optics systems approach the diffraction limit over wide fields. Since this will exceed the detection…

天体物理仪器与方法 · 物理学 2015-05-13 G. J. Murray , J. R. Allington-Smith

With the rapid development of machine learning applications on time-series data, accurately assessing the value of training samples has become essential for data selection, noise detection, and model optimization. However, traditional data…

机器学习 · 计算机科学 2026-05-12 Chuwen Pang , Bing Mi , Kongyang Chen

Conventional 2D fluorescence imaging in glioma surgery cannot separate intrinsic fluorophore strength from attenuation with depth, creating depth-intensity ambiguity that can compromise assessment of residual tumour and fluorescence based…

医学物理 · 物理学 2026-04-07 Yucheng Bian , Sebastien Ourselin , Yijing Xie

Although the recent image-based 3D object detection methods using Pseudo-LiDAR representation have shown great capabilities, a notable gap in efficiency and accuracy still exist compared with LiDAR-based methods. Besides, over-reliance on…

计算机视觉与模式识别 · 计算机科学 2021-01-01 Peixuan Li , Shun Su , Huaici Zhao

A new formulation of the spectral energy budget of kinetic and available potential energies of the atmosphere is derived, with spherical harmonics as base functions. Compared to previous formulations, there are three main improvements: (i)…

大气与海洋物理 · 物理学 2013-03-15 Pierre Augier , Erik Lindborg