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This work proposes the AutoHVSR algorithm that allows for fully-automated processing of horizontal-to-vertical spectral ratio (HVSR) measurements, including those with zero, one, or multiple clear resonances. The AutoHVSR algorithm…

Geophysics · Physics 2023-04-13 Joseph P. Vantassel , Andrew C. Stolte , Liam M. Wotherspoon , Brady R. Cox

The horizontal-to-vertical spectral ratio (HVSR) technique is widely used to determine site fundamental periods from ambient noise recordings, but relating the observed peak to a specific impedance contrast within layered soils remains…

Geophysics · Physics 2025-09-30 Mersad Fathizadeh , Clinton M. Wood , Hosna Kianfar

During a quarter of a century, the main characteristics of the horizontal-to-vertical spectral ratio of ambient noise HVSRN have been extensively used for site effect assessment. In spite of the uncertainties about the optimum theoretical…

Speech super-resolution (SR) reconstructs high-fidelity wideband speech from low-resolution inputs-a task that necessitates reconciling global harmonic coherence with local transient sharpness. While diffusion-based generative models yield…

Sound · Computer Science 2026-01-01 Jiajun Yuan , Xiaochen Wang , Yuhang Xiao , Yulin Wu , Chenhao Hu , Xueyang Lv

Hyperspectral super-resolution (HSR) reconstructs a high-spatial-resolution hyperspectral image by fusing a low-resolution hyperspectral image (LR-HSI) with a high-resolution multispectral image (HR-MSI). In the absence of real-world paired…

Image and Video Processing · Electrical Eng. & Systems 2026-05-22 Ritik Shah , Marco F. Duarte

Hyperspectral super-resolution (HSR) is a problem that aims to estimate an image of high spectral and spatial resolutions from a pair of co-registered multispectral (MS) and hyperspectral (HS) images, which have coarser spectral and spatial…

Image and Video Processing · Electrical Eng. & Systems 2020-10-28 Ruiyuan Wu , Wing-Kin Ma , Xiao Fu , Qiang Li

Objective: Heart rate variability (HRV) has been proven to be an important indicator of physiological status for numerous applications. Despite the progress and active developments made in HRV metric research over the last few decades, the…

Computational Engineering, Finance, and Science · Computer Science 2021-11-19 Chenglin Niu , Dagang Guo , Marcus Eng Hock Ong , Zhi Xiong Koh , Andrew Fu Wah Ho , Zhiping Lin , Chengyu Liu , Gari D. Clifford , Nan Liu

The stability of the low-frequency peaks (< 1 Hz) obtained in the passive seismic survey of Campo de Dal\'ias basin (CDB) by applying the horizontal-to-vertical spectral ratio (HVSR) method was investigated. Three temporary seismic stations…

Real-time estimation of ocean wave heights using high-frequency (HF) radar has attracted great attention. This method offers the benefit of easy maintenance by virtue of its ground-based installation. However, it is adversely affected by…

Numerical Analysis · Mathematics 2025-05-20 Kaede Watanabe , Toshiaki Yachimura , Tsubasa Terada , Hiroshi Kameda , Ryuhei Takahashi , Hiroshi Suito

Non-invasive surface wave methods have become a popular alternative to traditional invasive forms of site-characterization for inferring a site's subsurface shear wave velocity (Vs) structure. The advantage of surface wave methods over…

Geophysics · Physics 2021-04-06 Joseph P. Vantassel , Brady R. Cox

Video Super-Resolution (VSR) aims to restore high-resolution (HR) videos from low-resolution (LR) videos. Existing VSR techniques usually recover HR frames by extracting pertinent textures from nearby frames with known degradation…

Image and Video Processing · Electrical Eng. & Systems 2023-01-02 Zhongwei Qiu , Huan Yang , Jianlong Fu , Daochang Liu , Chang Xu , Dongmei Fu

One of the most promising non-invasive markers of the activity of the autonomic nervous system is Heart Rate Variability (HRV). HRV analysis toolkits often provide spectral analysis techniques using the Fourier transform, which assumes that…

Quantitative Methods · Quantitative Biology 2014-11-20 Constantino A. García , Abraham Otero , Xosé Vila , David G. Márquez

We propose a novel heart rate (HR) estimation method from facial videos that dynamically adapts the HR pulse extraction algorithm to separately deal with noise from 'rigid' head motion and 'non-rigid' facial expression. We first identify…

Signal Processing · Electrical Eng. & Systems 2019-05-30 Utkarsh Sharma , Terumi Umematsu , Masanori Tsujikawa , Yoshifumi Onishi

Advances in the field of seismic interferometry have provided a basic theoretical interpretation to the full spectrum of the microtremor horizontal-to-vertical spectral ratio [H/V(f)]. The interpretation has been applied to ambient seismic…

We propose a method for synthesizing high range resolution profiles (HRRP) using stepped frequency waveform (SFW) processing. Conventional SFW radars sweep over the available spectrum linearly to achieve high resolution from their…

Signal Processing · Electrical Eng. & Systems 2020-04-14 Kumar Vijay Mishra , Satish Mulleti , Yonina C. Eldar

Hyperspectral imaging is gathering significant attention due to its potential in various domains such as geology, agriculture, ecology, and surveillance. However, the associated processing algorithms, which are essential for enhancing…

Signal Processing · Electrical Eng. & Systems 2023-10-04 El Mehdi Abdali , Daniele Picone , Mauro Dalla-Mura , Stéphane Mancini

Frequency Selective Reconstruction (FSR) is a state-of-the-art algorithm for solving diverse image reconstruction tasks, where a subset of pixel values in the image is missing. However, it entails a high computational complexity due to its…

Image and Video Processing · Electrical Eng. & Systems 2022-03-01 Andy Regensky , Simon Grosche , Jürgen Seiler , André Kaup

The effective utilization of observational data is frequently hindered by insufficient resolution. To address this problem, we present a new spatio-temporal super-resolution (STSR) model, called InWaveSR. It is built on a deep learning…

Signal Processing · Electrical Eng. & Systems 2025-09-19 Xinjie Wang , Zhongrui Li , Peng Han , Chunxin Yuan , Jiexin Xu , Zhiqiang Wei , Jie Nie

Remote detection of the cardiac pulse has a number of applications in sports and medicine, and can be used to determine the physiological state of the subject. Previous approaches to estimate Heart Rate from video require the subject to…

Image and Video Processing · Electrical Eng. & Systems 2019-01-03 Arvind Subramaniam , Rajitha K

Video super-resolution (VSR) aiming to reconstruct a high-resolution (HR) video from its low-resolution (LR) counterpart has made tremendous progress in recent years. However, it remains challenging to deploy existing VSR methods to…

Computer Vision and Pattern Recognition · Computer Science 2022-12-13 Ruohao Wang , Xiaohui Liu , Zhilu Zhang , Xiaohe Wu , Chun-Mei Feng , Lei Zhang , Wangmeng Zuo
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